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0.5c accurate, 16 - bit digital i 2 c temperature sensor data sheet adt7410 rev. c document feedback information furnished by analog devices is believed to be accurate and reliable. however, no responsibility is assumed b y analog devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. one technology way, p.o. box 9106, norwood, ma 02062 - 9106, u.s.a. tel: 781.329.4700 ? 2009C 2017 analog devices, in c. all rights reserved. technical support www.analog.com features high performance temperature accuracy 0.5c from ?40c to +105c (2.7 v to 3.6 v) 0.4c from ?40c to +105c (3.0 v) 16- bit temperature resolution: 0.0078c fast first temperature conversion on power - up of 6 ms easy implementation no temperature calibration/correction required by user no linearity correction required low power power saving 1 sample per second (sps) mode 700 w typical at 3.3 v in normal mode 7 w typical at 3.3 v in shutdown mode wide operating ranges temperature range: ?55c to +150c voltage range: 2.7 v to 5.5 v programmable interrupts critical overtemperature interrupt overtemperature/undertemperature interrupt i 2 c - compatible interface 8 - lead n arrow soic rohs - compliant package applications medical equipment environmental control systems computer thermal monitoring thermal protection industrial process control power system monitors hand - held applications general description the adt7410 is a high accuracy digital temperature sensor in a narrow soic package. it contains a band gap temperature reference and a 13 - bit adc to monitor an d digitize the temper ature to a 0.0625c resolution. the adc resolution, by default, is set to 13 bits (0.0625c). this can be changed to 16 bits (0.0078c) by settin g bit 7 in the configuration register (register address 0x03). the adt7410 is guaranteed to operate over supply voltages from 2. 7 v to 5.5 v. operating at 3.3 v, the average supply current is t ypi - cally 210 a. the adt7410 has a shutdown mode that powers down the devi ce and offers a shutdown current of typically 2 a. the adt7410 is rated for operation over the ?55c to +150c temperature range. pin a0 and pin a1 are available for address selection, giving the adt7410 four possible i 2 c addre sses. the ct pin is an open - drain output that becomes active when the temperature exceeds a progr ammable critical temperature limit. the default critical temperature limit is 147c. the int pin is also an open - drain output that becomes active when the temperature exceeds a programmable limit. the int and ct pins can operate in either comparator or int errupt mode. functional block dia gram temperature value register configuration register t hyst register t low register t high register t crit register pointer register internal reference 8 7 temperature sensor t high t crit t low internal oscillator filter logic - modulator v dd gnd 6 5 ct int 3 4 a0 a1 1 2 scl sda i 2 c interface adt7410 06560-001 figure 1 .
adt7410* product page quick links last content update: 09/09/2017 comparable parts view a parametric search of comparable parts. evaluation kits ? adt7310 and adt7410 evaluation board documentation application notes ? an-1250: interfacing an adt7310/adt7410 to a cortex- m3 based precision analog microcontroller (aducm360) data sheet ? adt7410: 0.5c accurate, 16-bit digital i 2 c temperature sensor data sheet user guides ? ug-047: evaluating the adt7310/adt7410 temperature sensors reference materials informational ? wireless sensor network (wsn) demo system design resources ? adt7410 material declaration ? pcn-pdn information ? quality and reliability ? symbols and footprints discussions view all adt7410 engineerzone discussions. sample and buy visit the product page to see pricing options. technical support submit a technical question or find your regional support number. document feedback submit feedback for this data sheet. this page is dynamically generated by analog devices, inc., and inserted into this data sheet. a dynamic change to the content on this page will not trigger a change to either the revision number or the content of the product data sheet. this dynamic page may be frequently modified.
adt7410 data sheet rev. c | page 2 of 24 table of contents features .............................................................................................. 1 applications ....................................................................................... 1 general descript ion ......................................................................... 1 functional block diagram .............................................................. 1 revision history ............................................................................... 2 specifications ..................................................................................... 3 i 2 c timing specifications ............................................................ 4 absolute maximum ratings ............................................................ 5 esd caution .................................................................................. 5 pin configurations and function descriptions ........................... 6 typical performance characteristics ............................................. 7 theory of operation ........................................................................ 9 circuit information ...................................................................... 9 converter details .......................................................................... 9 temperature measurement ......................................................... 9 one - shot mode .......................................................................... 10 1 sps mode .................................................................................. 10 shutdown ..................................................................................... 11 fault queue ................................................................................. 11 temperature data format ......................................................... 12 temperature conversion formulas ......................................... 12 registers ........................................................................................... 13 address pointer register ........................................................... 13 temperature value registers .................................................... 13 status register ............................................................................. 14 configuratio n register .............................................................. 14 t high setpoint registers ............................................................. 15 t low setpoint registers .............................................................. 15 t cri t setpoint registers .............................................................. 15 t hyst setpoint register ............................................................... 16 id register ................................................................................... 16 serial interface ................................................................................ 17 serial bus a ddress ...................................................................... 17 writing data ............................................................................... 18 reading data ............................................................................... 19 reset ............................................................................................. 19 general call ................................................................................ 19 int and ct outputs ...................................................................... 21 undertemperature and overtemperature detection ............ 21 applications information .............................................................. 23 thermal response time ........................................................... 23 supply decoupling ..................................................................... 23 temperature monitoring ........................................................... 23 outline dimensions ....................................................................... 24 ordering g uide .......................................................................... 24 revision history 9 /2017 rev. b to rev. c removed 16 - lead lfcsp ............................................. throughout changes to table 3 ............................................................................ 5 deleted figure 5; renumbered sequentially ................................. 6 changes to table 4 ............................................................................ 6 changes to table 6 .......................................................................... 13 updated outline dimensions , deleted figure 24 ...................... 24 changes to ordering guide .......................................................... 24 7 /2016 rev. a to rev. b added 16 - lead lfcsp ....................................................... universal change s to tabl e 3 ............................................................................ 5 added figure 5; renumbered sequentially .................................. 6 changes to tabl e 4 ............................................................................ 6 changes to table 9 .......................................................................... 13 changes to table 10 ........................................................................ 14 changes to interrupt mode section and figure 20 .................... 21 changes to figure 21 ...................................................................... 22 updated outline dimensions ....................................................... 24 changes to ordering guide .......................................................... 2 4 12/ 2011 rev. 0 to rev. a changes to features section ............................................................ 1 changes to table 1 ............................................................................. 3 changes to figure 5 ........................................................................... 7 changes to one - shot mode section and 1 sps mode section .............................................................................................. 10 changes to shutdown section ...................................................... 11 changes to table 8 and table 9 .................................................... 13 changes to table 10 and table 11 ................................................ 14 changes to ordering gu ide .......................................................... 24 4/2009 revision 0: initial version
data sheet adt7410 rev. c | page 3 of 24 specifications t a = ?55c to +150c, v dd = 2.7 v to 5.5 v, unless otherwise noted. table 1. parameter min typ max unit test conditions/comments temperature sensor and adc accuracy 1 ?0.05 0.4 2 c t a = ?40c to +105c, v dd = 3.0 v 0.44 c t a = ?40c to +105c, v dd = 2.7 v to 3.3 v 0.5 c t a = ?55c to +125c, v dd = 3.0 v 0.5 c t a = ?40c to +105c, v dd = 2.7 v to 3.6 v 0.7 c t a = ?55c to +150c, v dd = 2.7 v to 3.6 v 0.8 c t a = ?40c to +105c, v dd = 4.5 v to 5.5 v 1.0 c t a = ?55c to +150c, v dd = 2.7 v to 5.5 v adc resolution 13 bits twos complement temperature value of the sign bit plus 12 adc bits (power - up default resolution) 16 bits twos complement temperature value of the sign bit plus 1 5 adc bits (bit 7 = 1 in the configuration register) temperature resolution 13- bit 0.0625 c 13- bit resolution (sign + 12 - bit) 16- bit 0.0078 c 16- bit resolution (sign + 15 - bit) temperature conversion time 240 ms continuous conversion and one - shot conversion modes fast temperature conversion time 6 ms first conversion on power - up only 1 sps conversion time 60 ms conversion time for 1 sps mode temperature hysteresis 0.002 c temperature cycle = 25c to 125c and back to 25c repeatability 3 0.015 c t a = 25c dc psrr 0.1 c/v t a = 25c digital outputs (open drain) high output leakage current, i oh 0.1 5 a ct and int pins pulled up to 5.5 v output high current 1 ma v oh = 5.5 v output low voltage, v ol 0.4 v i ol = 2 ma at 5.5 v, i ol = 1 ma at 3.3 v output high voltage, v oh 0.7 v dd v output capacitance, c out 3 pf digital inputs input current 1 a v in = 0 v to v dd input low voltage, v il 0.4 v input high voltage, v ih 0.7 v dd v scl, sda glitch rejection 50 ns inp ut filtering suppresses noise spikes of less than 50 ns pin capacitance 5 10 pf power requirements supply voltage 2.7 5.5 v supply current at 3.3 v 210 250 a peak current while converting, i 2 c interface inactive at 5.5 v 250 300 a peak current while converting, i 2 c interface inactive 1 sps current at 3.3 v 46 a v dd = 3.3 v, 1 sps mode, t a = 25c at 5.5 v 65 a v dd = 5.5 v, 1 sps mode, t a = 25c shutdown current at 3.3 v 2.0 15 a supply current in shutdown mode at 5.5 v 5.2 25 a supply current in shutdown mode power dissipation normal mode 700 w v dd = 3.3 v, normal mode at 25c power dissipation 1 sps 150 w power dissipated for v dd = 3.3 v, t a = 25c 1 accuracy includes lifetime drift. 2 the equivalent 3 limits are 0.33c . this 3 specification is provided to enable comparison with other vendors who use these limits. 3 based on a floating average of 10 readings.
adt7410 data sheet rev. c | page 4 of 24 i 2 c timing specificati ons t a = ?55c to +150c, v dd = 2.7 v to 5.5 v, unless otherwise noted. all input signals are specified with rise time (t r ) = fall time (t f ) = 5 ns (10% to 90% of v dd ) and timed from a voltage level of 1.6 v. table 2. parameter min typ max unit test conditions/comments serial interface 1 , 2 see figure 2 scl frequency 0 400 khz scl high pulse width, t high 0.6 s scl low pulse width, t low 1.3 s scl, sda rise time, t r 0.3 s scl, sda fall time, t f 0.3 s hold time (start condition), t hd;sta 0.6 s after this period, the first clock is generated setup time (start condition), t su;sta 0.6 s relevant for repeated start condition data setup time, t su;dat 0.25 s v dd 3.0 v 0.35 s v dd < 3.0 v setup time (stop condition), t su;sto 0.6 s data hold time, t hd;dat (master) 0 s bus - free time (between stop and start condition), t buf 1.3 s 1 sample tested during initial release to ensure compliance. 2 all input signals are specified with input rise/fall times = 3 ns, measured between the 10% and 90% points. timing reference points at 50% for inputs and outputs. output load = 10 pf. timing diagram 06560-002 p s t low t r t f t hd:s t a t hd:d a t t su:d a t t su:s t a t hd:s t a t su:s t o t high sc l p s sd a t buf figure 2 . serial interface timing diagram
data sheet adt7410 rev. c | page 5 of 24 absolute maximum ratings table 3. parameter rating v dd to gnd ?0.3 v to +7 v sda voltage to gnd ?0.3 v to v dd + 0.3 v scl output voltage to gnd ?0.3 v to v dd + 0.3 v a0 input voltage to gnd ?0.3 v to v dd + 0.3 v a1 input voltage to gnd ?0.3 v to v dd + 0.3 v ct and int output voltage to gnd ?0.3 v to v dd + 0.3 v esd rating (human body model) 2.0 kv operating temperature range ?55c to +150c storage temperature range ?65c to +160c maximum junction temperature, t jmax 150c 8- lead soic - n (r -8) power dissipation 1 w max = (t jmax ? t a 2 )/ ja thermal impedance 3 ja , junction - to - ambient (still air) 121c/w jc , junction -to - case 56c/w ir reflow soldering 220c peak temperature (rohs - compliant package) 260c (0c) time at peak temperature 20 sec to 40 sec ramp - up rate 3c/sec maximum ramp - down rate ?6c/sec maximum time from 25c to peak temperature 8 minutes maximum 1 values relate to package being used on a standard 2 - layer pcb. this gives a worst - case ja and jc . see figure 3 for a plot of maximum power dissipation vs. ambient te mperature (t a ). 2 t a = ambient temperature. 3 junction - to - case resistance is applicable to components featuring a preferential flow direction, for example, components mounted on a heat sink. junction - to - ambient is more useful for air - cooled, pcb - mounted co mponents. stresses at or above those listed under absolute maximum ratings may cause permanent damage to the product. this is a stress rating only; functional operation of the product at these or any other conditions above those indicated in the operatio nal section of this specification is not implied. operation beyond the maximum operating conditions for extended periods may affect product reliability. 06560-003 temperature (c) maximum power dissipation (w) 1.2 0.8 1.0 0.6 0.2 0.4 0 ?55 ?50 ?40 ?30 ?20 ?10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 max pd = 3.4mw at 150c figure 3 . soic_n maximum power dissipation vs . temperature esd caution
adt7410 data sheet rev. c | page 6 of 24 pin configurations and function descriptions scl 1 sda 2 a0 3 a1 4 v dd 8 gnd 7 ct 6 int 5 adt7410 top view (not to scale) 06560-005 figure 4. pin configuration table 4. pin function descriptions pin no. mnemonic description 1 scl i 2 c serial clock input. the serial clock is used to cloc k in and clock out data to and from any register of the adt7410 . open-drain configuration. a pull-up resistor is required, typically 10 k. 2 sda i 2 c serial data input/output. serial data to and from the part is provided on this pin. open-drain configuration. a pull-up resistor is required, typically 10 k. 3 a0 i 2 c serial bus address selection pin. logic input. connect to gnd or v dd to set an i 2 c address. 4 a1 i 2 c serial bus address selection pin. logic input. connect to gnd or v dd to set an i 2 c address. 5 int overtemperature and undertemperature indicator. logic output. power-up default setting is as an active low comparator interrupt. open-drain configuration. a pull-up resistor is required, typically 10 k. 6 ct critical overtemperature indicator. logic output. po wer-up default polarity is active low. open-drain configuration. a pull-up resistor is required, typically 10 k. 7 gnd analog and digital ground. 8 v dd positive supply voltage (2.7 v to 5.5 v). decouple the supply with a 0.1 f ceramic capacitor to ground.
data sheet adt7410 rev. c | page 7 of 24 typical performance characteristics 06560-006 ?60 ?40 ?20 0 20 40 60 80 100 120 140 160 temper a ture error (c) temper a ture (c) ?1.0 ?0.8 ?0.6 ?0.4 ?0.2 0 0.2 0.4 0.6 0.8 1.0 max accuracy limits max accuracy limits figure 5 . temperature accuracy at 3 v 06560-024 ?1.0 ?0.8 ?0.6 ?0.4 ?0.2 0 0.2 0.4 0.6 0.8 1.0 ?60 ?40 ?20 0 20 40 60 80 100 120 140 160 temper a ture error (c) temper a ture (c) max accuracy limits max accuracy limits figure 6 . temperature accuracy at 5 v 0 0.05 0.10 0.15 0.20 0.25 0.30 ?100 ?50 0 50 100 150 200 i dd ( ma) temper a ture (c) 3.0v 1sps 5.5v 1sps 5.5v continuous conversion 3.0v continuous conversion 06560-007 figure 7 . operating supply current vs. temperature 3.6v 06560-025 shutdown i dd ( a) temper a ture (c) 0 5 10 15 20 25 30 ?100 ?50 0 50 100 150 200 3.3v 3.0v 2.7v 4.5v 5.0v 5.5v figure 8 . shutdown current vs. temperature
adt7410 data sheet rev. c | page 8 of 24 0 0.05 0.10 0.15 0.20 0.25 0.30 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 i dd (ma) supply voltage (v) i dd continuous conversion i dd 1sps 06560-008 figure 9 . average operating supply current vs. supply voltage at 25c 0 1 2 3 4 5 6 7 8 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 shutdown i dd (a) supp l y vo lt age (v) 06560-009 figure 10 . shutdown current vs. supply voltage at 25c 0 20 40 60 80 100 120 140 160 0 40 35 30 25 20 15 10 5 temperature (c) time (seconds) 06560-011 figure 11 . response to thermal shock
data sheet adt7410 rev. c | page 9 of 24 theory of operation circuit information the adt7410 is a 13-bit digital temperature sensor that is extendable to 16 bits for greater resolution. an on-board temperature sensor generates a voltage proportional to absolute temperature, which is compared to an internal voltage reference and input to a precision digital modulator. the on-board temperature sensor has excellent accuracy and linearity over the entire rated temperature range without needing correction or calibration by the user. the sensor output is digitized by a - modulator, also known as the charge balance type analog-to-digital converter. this type of converter uses time domain oversampling and a high accuracy comparator to deliver 16 bits of resolution in an extremely compact circuit. configuration register functions consist of ? switching between 13-bit and 16-bit resolution ? switching between normal operation and full power-down ? switching between comparator and interrupt event modes on the int and ct pins ? setting the active polarity of the ct and int pins ? setting the number of faults that activate ct and int ? enabling the standard one-shot mode and 1 sps mode converter details the - modulator consists of an input sampler, a summing network, an integrator, a comparator, and a 1-bit dac. this architecture creates a negative feedback loop and minimizes the integrator output by changing the duty cycle of the comparator output in response to input voltage changes. the comparator samples the output of the integrator at a much higher rate than the input sampling frequency. this oversampling spreads the quantization noise over a much wider band than that of the input signal, improving overall noise performance and increasing accuracy. the modulated output of the comparator is encoded using a circuit technique that results in i 2 c temperature data. - ? modulator integrator comparator temperature value register clock generator lpf digital filter 1-bit dac voltage ref and vptat 1-bit 13-bit 0 6560-012 figure 12. - modulator temperature measurement in normal mode, the adt7410 runs an automatic conversion sequence. during this automatic conversion sequence, a conversion takes 240 ms to complete and the adt7410 is continuously converting. this means that as soon as one temperature conversion is completed, another temperature conversion begins. each temperature conversion result is stored in the temperature value registers and is available through the i 2 c interface. in continuous conversion mode, the read operation provides the most recent converted result. on power-up, the first conversion is a fast conversion, taking typically 6 ms. if the temperature exceeds 147c, the ct pin asserts low. if the temperature exceeds 64c, the int pin asserts low. fast conversion temperature accuracy is typically within 5c. the conversion clock for the part is generated internally. no external clock is required except when reading from and writing to the serial port. the measured temperature value is compared with a critical temperature limit (stored in the 16-bit t crit setpoint read/write register), a high temperature limit (stored in the 16-bit t high set- point read/write register), and a low temperature limit (stored in the 16-bit t low setpoint read/write register). if the measured value exceeds these limits, the int pin is activated; and if it exceeds the t crit limit, the ct pin is activated. the int and ct pins are programmable for polarity via the configuration register, and the int and ct pins are also programmable for interrupt mode via the configuration register.
adt7410 data sheet rev. c | page 10 of 24 one - shot mode when one - shot mode is enabled, the adt7410 immediately completes a conversion and then goes into shutdown mode. the one - shot mode is useful when one of the circuit design priorities is to reduce power consumption. to enable one - shot mode, set bits[6:5] of the configuration register (registe r address 0x03) to 01. after writing to the operation mode bits, w ait at least 240 ms before reading back the temperature from the temperature value register. this delay ensures that the adt741 0 has adequate time to power up and complete a conversion. to obtain an updated temperature conversion, reset bits[6:5] of the configuration register (register address 0x03) to 01. 1 sps mode in this mode, the part performs one measurement per second. a conversion takes only 60 ms, and it remains in the idle state for the remaining 940 ms period. this mode is enabled by writing 1 to bit 6 and 0 to bit 5 of the configuration register (register a ddress 0x03). ct and int operation in one - shot mode see figure 13 for more information on one - shot ct pin operation for t crit overtemperature events when one of the limits is exceeded. note that in interrupt mode, a read from any register resets the int and ct pins. for the int pin in the comparator mode, if the temperature drops below the t high ? t hyst value or goes above the t low + t hyst value, a write to the one - sh ot bits (bit 5 and bit 6 of the con figuration register, register address 0x03) resets the int pin. for the ct pin in the comparator mode, if the temperature drops below the t crit ? t hyst value, a write to the one - shot bits (bit 5 and bit 6 of the configur ation register, register address 0x03) resets the ct pin. see figure 13. note that when using one - shot mode, ensure that the refresh rate is appropriate to the appl ication being used. temper a ture 149c 148c 147c 146c 145c 144c 143c 142c 141c 140c ct pin polarit y = active low ct pin polarit y = active high t crit t crit ? t hyst time *there is a 240ms del a y between writing t o the configur a tion register t o s t art a s t andard one-shot conversion and the ct pin going active. this is due t o the conversion time. the del a y is 60ms in the case of a 1 sps conversion. write t o bit 5 and bit 6 of configur a tion register. * write t o bit 5 and bit 6 of configur a tion register. * write t o bit 5 and bit 6 of configur a tion register. * 06560-013 figure 13 . one - shot ct pin
data sheet adt7410 rev. c | page 11 of 24 shutdown the adt7410 can be placed in shutdown mode by writing 1 to bit 6 and 1 to bit 5 of the configuration register (register address 0x03), in which case the entire ic is shut down and no further conversions are initiated until the adt7410 is taken out of shutdown mode. the adt7410 can be taken out of shutdown mode by writing 0 to bit 6 and 0 to bit 5 in the configuration register (register address 0x 03). the adt7410 typically takes 1 ms (with a 0.1 f decoupling capacitor) to come out of shutdown mode. the conversion result from the last conversion prior to shutdown can still be read from t he adt7410 even when it is in shutdown mode. when the part is taken out of shutdown mode, the internal clock is started and a conversion is initiated. fault queue bit 0 and bit 1 of the configuration register (register address 0x03) are used to set up a fault q ueue. the queue can facilitate up to four fault events to prevent false tripping of the int and ct pins when the adt7410 is used in a noisy temperature environment. the number of faults set in the queue must occur consecutively to set the int and ct outputs. for example, if the number of faults set in the queue is four, then four consecutive temperature conversi ons must occur with each result exceeding a tempera ture limit in any of the limit registe rs before the int and ct pins are activated. if two consecutive temperature conversions exceed a temperature limit and the third conversion does not, the faul t count is reset back to zero.
adt7410 data sheet rev. c | page 12 of 24 temperature data for mat one lsb of the adc corresponds to 0.0625c in 13 - bit mode. the adc can theoretically measure a temperature range of 255c, but the adt7410 is guaranteed to measure a low value temperature limit of ?55c to a high value temperature limit of +150c. the temperature measurement result is stored in the 16 - bit temperature value re gister and is compared with the high temperature limits stored in the t crit setpoint register and the t high setpoint register. it is also compared with the low temperature limit stored in the t low setpoint register. temperature data in the temperature valu e register, the t crit setpoint register, the t high setpoint register, and the t low setpoint register are represented by a 13 - bit twos complement word. the msb is the temperature sign bit. the three lsbs, bit 0 to bit 2, on power - up, are not part of the tem perature conver - sion result and are flag bits for t crit , t high , and t low . table 5 shows the 13 - bit temperature data format without bit 0 to bit 2. the number of bits in the temperature data - word can be ext ended to 16 bits, twos complement, by setting bit 7 to 1 in the conf i - guration register (register address 0x03). when using a 16 - bit temperature data value, bit 0 to bit 2 are not used as flag bits and are, instead, the lsb bits of the temperature value. the power - on default setting has a 13 - bit temperature data value. rea din g back the temperature from the temperature value register requires a 2 - byte read. designers that use a 9 - bit temperature data format can still use the adt7410 by ignoring the last four lsbs of the 13 - bit temperature value. these four lsbs are bit 6 to bit 3 in table 5 . table 5 . 13 - bit temperature data format temperature digital out put (binary) bits[15:3] digital output (hex) ? 55c 1 1100 1001 0000 0x1c90 ?50 c 1 1100 1110 0000 0x1ce0 ?25 c 1 1110 0111 0000 0x1e70 ?0.0625 c 1 1111 1111 1111 0x1fff 0c 0 0000 0000 0000 0x000 +0.0625 c 0 0000 0000 0001 0x001 +25 c 0 0001 1001 0000 0x190 +50 c 0 0011 0010 0000 0x320 +125 c 0 0111 1101 0000 0x7d0 +150 c 0 1001 0110 0000 0x960 temperature conversi on formulas 16- bit temperature data format positive temperature = adc code (dec)/128 negative temperature = ( adc code (dec) ? 65,536)/128 where adc code uses all 16 bits of the data byte, including the sign bit. negative temperature = ( adc code (dec) ? 32,768)/128 where bit 15 (sign bit) is removed from the adc code. 13- bit temperature data format positive temperature = adc code (dec)/16 negative temperature = ( adc code (dec) ? 8192)/16 where adc code uses the first 13 msbs of the data byte, including the sign bit. negative temperature = ( adc code (dec) ? 4096)/16 where bit 15 (sign bit) is removed from the adc code. 10- bit temperature data format positive temperature = adc code (dec)/2 negative temperature = ( adc code (dec) ? 1024)/2 where adc code uses all 10 bits of the data byte, including the sign bit. negative temperature = ( adc code (dec) ? 512)/2 where bit 9 (sign bit ) is removed from the adc code. 9 - bit temperature data format positive temperature = adc code (dec) negative temperature = adc code (dec) ? 512 where adc code uses all nine bits of the data byte, including the sign bit. negative temperature = adc code (dec ) ? 256 where bit 8 (sign bit) is removed from the adc code.
data sheet adt7410 rev. c | page 13 of 24 registers the adt7410 contains 14 registers: ? nine temperature registers ? a status register ? an id register ? a configuration register ? an address pointer register ? a software reset all registers are eight bits wide. the temperature value registers, the status register, and the id register are read - only. the software reset is a write - only reg ister. on power - up, the address pointer register is loaded with 0x00 and points to the temperature value register msb. table 6. adt7410 registers register address description power - on default 0x00 temperature value most significant byte 0x00 0x01 temperature value least significant byte 0x00 0x02 status 0x00 0x03 configuration 0x00 0x04 t high setpoint most significant byte 0x20 (64c) 0x05 t high setpoint least significant byte 0x00 (64c) 0x06 t low setpoint most significant byte 0x05 (10c) 0x07 t low setpoint least significant byte 0x00 (10c) 0x08 t crit setpoint most significant byte 0x49 (147c) 0x09 t crit setpoint least significant byte 0x80 (147c) 0x0a t hyst setpoint 0x05 (5c) 0x0b id 0xcx 0x0c reserved 0xxx 0x0d reserved 0xxx 0x2e reserved 0xxx 0x2f software reset 0xxx address pointer regi ster this register is always the first register written to during a write to the adt7410 . it must be set to the address of the register to which the write or read transaction is intended. tabl e 7 shows the register address of each register on the adt7410 . the default value of the address pointer register is 0x00. table 7 . address pointer register p7 p6 p 5 p4 p3 p2 p1 p0 add7 add6 add5 add4 add3 add2 add1 add0 temperature value re gisters the tempe rature value most significant byte (msb) and tem - perature value least significant byte (lsb) registers store the temperature measured by the internal temperature sensor. the temperature is stored in twos complement format with the msb being the temperature sign bit. when reading from these registers, the eight msbs (bit 7 to bit 15) are rea d first from register address 0x00 and then the eight lsbs (bit 0 to bit 7) are re ad from register address 0x01. only the tempera ture value most significant byte ( register address 0x00) needs to be loaded into the addr ess pointer register as the address pointer auto - increments to the t emperature value least significant byte address (register address 0x01 ). bit 0 to bit 2 are event alarm flags for t crit , t high , and t low . when the adc is configured to convert the temperature to a 16 - bit digital value then bit 0 to bit 2 are no longer used as flag bits and are instead used as the lsb bits for the extended digital value. table 8 . temperature value msb register (register address 0x00) bit default value type name description [14:8] 0000000 r temp temperature value in twos complement format 15 0 r sign sign bit, indicates if the temperature value is negative or positive table 9 . temperature value lsb register (register address 0x01) bit default value type name description 0 0 r t low flag/lsb0 flags a t low event if the configuration register, register address 0x03[7] = 0 (13 - bit resolution) , and if comparator mode is selected through the configuration register, register address 0x03[4] . when the temperature value is below t low , this bit it set to 1. contains the least significant bit 0 of the 15 - bit temperature value if the configuration register, register address 0x03[7] = 1 (16 - bit resolution). 1 0 r t high flag/lsb1 flags a t hig h event if the configuration register, register address 0x03[7] = 0 (13 - bit resolution) , and if comparator mode is selected through the configuration register, register address 0x03[4] . when the temperature value is above t high , this bit it set to 1. contains the least significant bit 1 of the 15 - bit temperature value if the configuration register, register address 0x03[7] = 1 (16 - bit resolution). 2 0 r t crit flag/lsb2 flags a t crit event if the configuration register, register address 0x03[7] = 0 (13 - bit resolution) , and if comparator mode is selected through the configuration register, register address 0x03[4] . when the temperature value exceeds t crit , this bit it set to 1. contains the least significant bit 2 of the 15 - bit temperature value if the config uration register, register address 0x03[7] = 1 (16 - b it resolution). [7:3] 00000 r temp temperature value in twos complement format.
adt7410 data sheet rev. c | page 14 of 24 status register this 8 - bit read - only register reflects the status of the overtempera - ture and undertemperature interrupts that can cause the ct and int pins to go active. it also reflects the status of a temperature conversion operation. the interrupt flags in this register are reset by a read operation to the status register and/or when the temperature value returns within the temperature limits, including hysteresis. the rdy bit is reset after a read from the temperature value register. in one - shot and 1 sps modes, the rdy bit is reset after a write to the one - shot bits. configuration regist er this 8 - bit read/write register stores various configuration modes for the adt7410 , including shutdown, overtemperature an d undertemperature interrupts, one - shot, continuous conversion, interrupt pins polarity, and overtemperature fault queues. table 10 . status register (register address 0x02) bit default value type name description [3:0] 0000 r unused reads back 0. 4 0 r t low set t his bit t o 1 when the temperature goes below the t low temperature limit , and if comparator mode is selected through the configuration register, register address 0x03[4] . the bit clears to 0 when the status register is read and/or when the temperature measured goes back above the limit set in the setpoint t low + t hyst registers. 5 0 r t high set t his bit t o 1 when the temperature goes above the t high temperature limit , and if comparator mode is selected through the configuration register, register address 0x03[4] . the bit clears to 0 when the status register is read and/or when the temperature measured goes back below the limit set in the setpoint t high ? t hyst registers. 6 0 r t crit set t his bit to 1 when the temperature goes above the t crit temperature limit , and if comparator mode is selected through the configuration register, register address 0x03[4] . this bit clears to 0 when the status register is read and/or when the temperatur e measured goes back below the limit set in the setpoint t crit ? t hyst registers. 7 1 r rdy this bit goes low when the temperature conversion result is written into the temperature value register. it is reset to 1 when the temperature value register is read. in one - shot and 1 sps modes, this bit is reset after a write to the one - shot bits. tabl e 11 . configuration register (register address 0x03) bit default value type name description [1:0] 00 r/ w fault queue t hese two bits set the number of undertemperature/overtemperature faults that can occur bef ore setting the int and ct pins. this helps to avoid false triggering due to temperature noise. 00 = 1 fault (default). 01 = 2 faults. 10 = 3 faults. 11 = 4 faults. 2 0 r/ w ct pin polarity this bit selects the output polarity of the ct pin. 0 = active low. 1 = active high. 3 0 r/ w int pin polarity this bit selects the output polarity of the int pin. 0 = active low. 1 = active high. 4 0 r/ w int/ct mode this bit selects between comparator mode and interrupt mode. 0 = interrupt mode 1 = comparator mode [6:5] 00 r/ w operation mode these two bits set the operational mode for the adt7410 . 00 = continuous conversion (default). when one conversion is finished, the adt7410 starts another. 01 = one shot. conversion time is typically 240 ms. 10 = 1 sps mode. conversion time is typically 60 m s. this operational mode reduces the average current consumption. 11 = sh utdown. all circuitry except interface circuitry is powered down. 7 0 r/ w resolution this bit sets up the resolution of the adc when converting. 0 = 13 - bit resolution. sign bit + 12 bits gives a temperature resolution of 0.0625c. 1 = 16 - bit resolution. sign bit + 15 bits gives a temperature resolution of 0.0078c.
data sheet adt7410 rev. c | page 15 of 24 t high setpoint registers the t high setpoint msb and t high setpoint lsb registers store the overtemperature limit value. an overtemperature event occurs when the temperature value stored in the temperature value register exceeds the value stored in this register. the int pin is activated if an overtemperature event occurs. the temperature is stored in twos complement format with the msb being the temperature sign bit. when reading from this register, the eight msbs (bit 1 5 to bit 8) are read first from register address 0x04 and then the eight lsbs (bit 7 to bit 0) are read from register address 0x05. only register address 0x04 (t high setpoint msb) needs to be loaded into the address pointer register as the address pointer auto - increments to register address 0x05 (t high setpoint lsb). the default setting for the t high setpoint is 64c. t low setpoint registers the t low setpoint msb and t low setpoint lsb registers store the undertempera ture limit value. an undertemperature ev ent occurs when the temperature value stored in the temperature value register is less than the value stored in this register. the int pin is activated if an undertemperature event occurs. the temperature is stored in twos complement format with the msb be ing the temperature sign bit. w hen reading from this register, the eight msbs (bit 15 to bit 8) are read first from register address 0x06 and then the eight lsbs (bit 7 to bit 0) are read from register address 0x07. only the register address 0x06 (t low se tpoint msb) needs to be loaded into the address pointer register as the address pointer auto - increments to register address 0x07 (t low setpoint lsb). the default setting for the t low setpoint is 10c. t crit setpoint registers the t crit setpoint msb and t crit setpoint lsb registers store the critical overtemperature limit value. a critical overtemperature event occurs when the temperature value stored in the temperature value register exceeds the value stored in this register. the ct pin is activated if a critical overtemperature event occurs. the temperature is stored in twos complement format with the msb being the temperature sign bit. when reading from this register, the eight msbs (bit 15 to bit 8) are read first from register address 0x08 and then the eight lsbs (bit 7 to bit 0) are read from register address 0x09. only the register address 0x08 (t cri t setpoint msb) needs to be loaded into the address pointer register as the address pointer auto - increments to register address 0x09 (t crit setpoint lsb). the default setting for the t crit limit is 147c. table 12 . t high setpoint msb register (register address 0x04) bit default value type name description [15:8] 0x20 r/ w t high msb msbs of the overtemperature limit, stored in twos complement format. table 13 . t high setpoint lsb register (register address 0x05) bit default value type name description [7:0] 0x00 r/ w t high lsb lsbs of the overtemperature limit, stored in twos complement format. table 14 . t low setpoint msb register (register address 0x06) bit default value type name description [15:8] 0x05 r/ w t low msb msbs of the undertemperature limit, stored in twos complement format. table 15 . t low setpoint lsb register (register address 0x07) bit default value type name description [7:0] 0x00 r/ w t low lsb lsbs of the undertemperature limit, stored in twos complement format. table 16 . t crit setpoint msb register (register address 0x08) bit default value type name description [15:8] 0x49 r/ w t crit msb msbs of the critical overtemperature limit, stored in twos complement format. table 17 . t crit setpoint lsb register (register address 0x09) bit default value type name description [7:0] 0x80 r/ w t crit lsb lsbs of the critical overtemperature limit, stored in twos complement format.
adt7410 data sheet rev. c | page 16 of 24 t hyst setpoint register this 8 - bit read/write register stores the temperature hysteresis value for the t high , t low , and t crit temperature limits. the temperature hysteresis value is stored in straight binary format using four lsbs. increments are possible in st eps of 1c from 0c to 15c. the value in this register is subtracted from the t high and t crit values and added to the t low value to implement hysteresis. id register this 8 - bit read - only register stores the manufacturer id in bit 3 to bit 7 and the silic on revision in bit 0 to bit 2. table 18 . t hyst setpoint register (register address 0x0a) bit default value type name description [3:0] 0101 r/ w t hyst hysteresis value, from 0c to 15c. stored in straight binary format. the default setting is 5c. [7:4] 0000 r/ w n/a not used. table 19 . id register (register address 0x0b) bit default value type name description [2:0] xxx r revision id contains the silicon revision identification number [7:3] 11001 r manufacture id contains the manufacturer identification number
data sheet adt7410 rev. c | page 17 of 24 serial interface adt7410 scl ct int a1 a0 sda gnd v dd 10k 10k 10k pull-u p v dd pull-u p v dd 0.1f 10k pull-u p v dd t o interrupt pin on microcontroller v dd 06560-014 figure 14 . typical i 2 c interface connection control of the adt7410 is carried out via the i 2 c- compatible serial interface. the adt7410 is connected to this bus as a slave and is under the con trol of a master device. figure 14 shows a typical i 2 c interface connection. serial bus address like all i 2 c- compatible devices, the adt7410 has a 7 - bit serial address. the five msbs of this address for the adt7410 are set to 10010. pin a1 and pin a0 set the two lsbs. these pins can be configured t wo ways, low and high, to give four different add ress options. table 20 shows the different bus address opt ions available. the recommended pull - up resistor value on the sda and scl lines is 10 k? . table 20. i 2 c bus address options binary hex a6 a5 a4 a3 a2 a1 a0 1 0 0 1 0 0 0 0x48 1 0 0 1 0 0 1 0x49 1 0 0 1 0 1 0 0x4a 1 0 0 1 0 1 1 0x4b the serial bus protocol operates as follows: 1. the master initiates data transfer by establishing a start condition, defined as a high - to - low transition on the serial data line, sda, while the serial clock line, scl, remains high. this indicates that an address/data stream is going to follow. all slave per ipherals connected to the serial bus respond to the start condition and shift in the next eight bits, consisting of a 7 - bit address (msb first) plus a read/ write (r/ w ) bit. the r/ w bit determines whether data is written to, or read from, the slave device. 2. the peripheral with the address corresponding to the transmitted address responds by pulling the data line low during the low period before the ninth clock pulse, known as the acknowledge bit. all other devices on the bus then remain idle while the selected device waits for data to be read from or written to it. if the r/ w bit is a 0, the master writes to the slave device. if the r/ w bit is a 1, the master reads from the slave device. 3. data is sent over the serial bus in sequences of nine clock pulses, eight bits of data followed by an acknowledge bit from the receiver of data. transitions on the data line must occur during the low period of the clock signal and remain stable dur ing the high period as a low - to - high transition when the clock is high, which can be interpreted as a stop signal. 4. when all data bytes have been read or written, stop conditions are established. in write mode, the master pulls the data line high during the 10 th clock pulse to assert a stop condition. in read mode, the master device pulls the data line high during the low period before the ninth clock pulse. this is known as a no acknowledge. the master takes the data line low during the low period before th e 10 th clock pulse, then high during the 10 th clock pulse to assert a stop condition. it is not possible to mix read and write in one operation because the type of operation is determined at the beginning and cannot subsequently be changed without starting a new operation.
adt7410 data sheet rev. c | page 18 of 24 writing data it is possible to write either a single byte of data or two bytes to the adt7410 , depending on which registers are to be written. writing a single by te of data requires the serial bus address, the data register address written to the address pointer register, followed by the data byte written to the selected data register. this is shown in figure 15. for the t high setpoint , t low setpoint , and t crit setpoint registers, it is possible to write to both the msb and the lsb registers in the same write transaction. writing two bytes of data to these registers requires th e serial bus address, the data register address of the msb register written to the address pointer register, followed by the two data bytes written to the selected data register. this is shown in figure 16 . if more than the required number of data bytes is written to a register, the register ignores these extra data bytes. to write to a different register, a start or repeated start is required. frame 1 seria l bus address byte frame 2 address pointer register byte ack. b y adt7410 ack. b y adt7410 ack. b y adt7410 s t o p b y master frame 3 d at a byte sd a (continued) sc l (continued) sc l sd a s t art b y master 1 0 0 1 0 a1 a0 p 7 p6 p5 p4 p3 p2 p1 p0 9 d7 d6 d 5 d4 d 3 d2 d1 d 0 r/w 1 9 1 9 1 06560-016 figure 15 . writing to a register followed by a single byte of data frame 1 seria l bus address byte frame 2 address pointer register byte ack. b y adt7410 ack. b y adt7410 ack. b y adt7410 s t o p b y master frame 4 d at a byte sc l sd a s t art b y master 1 0 0 1 0 a1 a0 p 7 p6 p5 p4 p3 p2 p1 p0 9 d7 d6 d5 d4 d3 d2 d1 d0 r/w 1 9 1 9 1 ack. b y adt7410 frame 3 d at a byte sd a (continued) sc l (continued) d15 d14 d13 d12 d 1 1 d10 d9 d8 9 1 06560-017 figure 16 . writing to a register followed by two bytes of data
data sheet adt7410 rev. c | page 19 of 24 reading data reading data from the adt7410 is done in a single data byte operation for the configuration register, the status register, the t hyst register, and the id register. a two data byte read operation is needed for the tempe rature value register, t high setpoint register, t low setpoint register, and the t crit setpoint register. reading back the contents of an 8 - bit register similar to the configuration register is shown in figure 17 . reading back the contents of the temperature value register is shown in figure 18. reading back from any register first re quires a single - byte write operation to the address pointer register to set up the address of the register that is going to be read from. in the case of reading back from the 2 - byte registers, the address pointer automatically increments from the msb regis ter address to the lsb register address. to read from another register, execute another write to the address pointer register to set up the relevant register address. thus, block reads are not possible, that is, there is no i 2 c address pointer auto - increment except when reading back from a 16 - bit register. if the address pointer register has previously been set up with the address of the register that is going to receive a read command, there is no need to repeat a write operation to set up the register address again. reset to r eset the adt7410 without having to reset the entire i 2 c bu s, an explicit reset command is provided. this uses a particular address pointer word as a command w ord to reset the part and upload all default settings. the adt7410 does not respond to the i 2 c bus commands (do not acknowledge) during the default values upload for approximately 200 s. the re set command address word is 0x2f. general call when a master issues a slave address consisting of seven 0s with the eighth bit (r/ w bit) set to 0, this is known as the general call address. the general call address is for addressing every device conne cted to the i 2 c bus. the adt7410 acknowledges this addre ss and reads in th e following data byte. if the second byte is 0x06, the adt7410 is reset, completely uploading all default values. the adt7410 does n ot respond to the i 2 c bus commands (do not acknowledge) while the default values upload for approximately 200 s. the adt7410 does not acknowledge any other general call commands. scl sda 1 1 0 0 1 a2 0 a0 repe a t s t art by master frame 3 seria l bus address byte frame 4 dat a byte from configur a tion register st op b y master ack. b y adt7410 no ack. b y master r/w d7 d6 d5 d4 d3 d2 d1 d0 9 9 1 06560-018 scl sda 1 1 0 0 1 a1 a0 st art b y master frame 1 seria l bus address byte frame 2 address pointer register byte ack. b y adt7410 ack. b y adt7410 r/w p7 p6 p5 p4 p3 p2 p1 p0 9 9 1 0 figure 17 . reading back data from the configuration register
adt7410 data sheet rev. c | page 20 of 24 notes 1. a start condition at the beginning is defined as a high-to-low transition on sda while sclk remains high. 2. a stop condition at the end is defined as a low-to-high transition on sda while sclk remains high. 3. the master generates the no acknowledge at the end of the readback to signal that it does not want additional data. 4. temperature register msb data and temperature register lsb data are always separated by a low ack bit. 5. the r/w bit is set to a1 to indicate a readback operation. sd a 1 0 0 r/w a7 a6 sc l sd a sc l 1 a1 a0 1 1 0 a1 a0 9 adt7410 device address register address[a7:a0] d1 d0 d7 d6 temper a ture register msb d at a 9 1 1 9 9 0 1 a1 a0 06560-023 r/w repe a t s t art d1 d0 d7 d6 ack. b y adt7410 ack. by master no ack. by master ack. b y adt7410 s t art adt7410 device address ack. by adt7410 temper a ture register lsb d at a sr figure 18 . reading back data from the temperature value register
data sheet adt7410 rev. c | page 21 of 24 int and ct outputs the int and ct pins are open - drain outputs, and both pins require a 10 k? pull - up resistor to v dd . undertemperature and overtemperature detection the int and ct pins have two undertemperature/ overtemperature modes: comparator mode and interrupt mode. the inte rrupt mode is the default power - up overtemperature mode. the int output pin becomes active when the temperature is greater than the temperature stored in the t high setpoint register or less than the temperature stored in the t low setpoint register. how thi s pin reacts after this event depends on the overtemper - ature mode selected. figure 19 illustrates the comparator and interrupt modes for events exceeding the t high li mit with both pin polarity settings. figure 20 illustrates the comparator and interrupt modes for events exceeding the t low limit with both pin polarity settings. co mparator mode in comparator mode, the int pin returns to its inactive status when the temperature drops below the t high ? t hyst limit or rises above the t low + t hyst limit. putting the adt7410 into shutdown mode does not reset the int state in comparator mode. interrupt mode in interrupt mode, the int pin only goes inactive when the adt7410 register is read, that is, independently, w hen the temperature has recovered and gotten back to within the limits before point c, as shown in figure 20. when the int pin is reset, it only go es active again when the temperature goes from an overtemperature/undertemperature condition back to a temperature within the limits or vice versa. as shown in figure 19 , the int pin goes active when the temperature rises beyond the t high limit and resets the next time any register is read. when reset, it does not go active again un til temperatures decrease ba ck to below t high ? t hyst (point a), and when reset, it go es active again when the t high /t low is e xceeded (point b) . temper a ture 82c 81c 80c 79c 78c 77c 76c 75c 74c 73c int pin (com p ar a t or mode) polarit y = active low int pin (interrupt mode) polarit y = active low int pin (interrupt mode) polarit y = active high int pin (com p ar a t or mode) polarit y = active high t high t high ? t hyst time read read read 06560-020 a b figure 19 . int output temperature response diagram for t high overtemperature events
adt7410 data sheet rev. c | page 22 of 24 temper a ture ?13c ?14c ?15c ?16c ?17c ?18c ?19c ?20c ?21c ?22c int pin (com p ara t or mode) polarit y = active low int pin (interrupt mode) polarit y = active low int pin (interrupt mode) polarit y = active high int pin (com p ara t or mode) polarit y = active high t low + t hyst t low time read read read 06560-021 c figure 20 . int output temperature response diagram for t low undertemperature events
data sheet adt7410 rev. c | page 23 of 24 applications informa tion thermal response tim e the time required for a temperature sensor to settle to a specified accuracy is a function of the thermal mass of the sensor and the thermal conductivity between the sensor and the object being sensed. thermal mass is often considered equivalent to capacitance. thermal conductivity is commonly specified usin g the symbol, q, and can be thought of as thermal resistance. it is commonly specified in units of degrees per watt of power transferred across the thermal joint. the time required for the part to settle to the desired accuracy is dependent on the thermal contact established in a particular application and the equivalent power of the heat source. in most applications, it is best to determine the settling time empirically. supply decoupling decouple the adt7410 with a 0.1 f ceramic capacitor between v dd and gnd. this is particularly important when the adt7410 is mounted remotely from the power supply. precision analog products, such as the adt7410 , require a well - filtered power source. because the adt7410 operates from a single supply, it might seem convenient to tap int o the digital logic power supply . unfortunately, the logic supply is often a switch - mode design, which generates noise in the 20 khz to 1 mhz range. in additio n, fast logic gates can generate glitches hundreds of millivolts in amplitude due to wiring resistance and inductance. if possible, the power adt7410 directly from the system power supply. this arrangement, shown in figure 21 , isolates the analog section from the logic switching transients. even if a separate power supply trace is not available, generous supply bypassing reduces supply - line induced errors. local supply bypassing consisting of a 0.1 f ceramic capacitor is critical for the temperature accuracy specifications to be achieved. this decoupling capacitor must be placed as close as possible to the v dd pin of the adt7410 . 0.1f adt7410 ttl/cmos logic circuits power supp l y 06560-022 figure 21 . use of separate traces to reduce power supply noise temperature monitori ng the adt7 410 is ideal for monitoring the thermal environment within electronic equipment. for example, the surface - mounted package accurately reflects the exact thermal conditions that affect nearby integrated circuits. the adt7410 measures and converts the temperature at the surface of its own semiconductor chip. when the adt7410 is used to measure the te mperature of a nearby heat source, the thermal impedance between the heat source and the adt7410 must be considered. when the thermal impedance is determined, the temperature of the heat source can be inferred from the adt7410 output. as much as 60% of the heat transferred from the heat source to the thermal sensor on the a dt7410 die is discharged via the coppe r tracks, the package pins, and the bond pads. of the pins on the adt7410 , the gnd pin transfers most of the heat. therefore, to measure the temperature of a heat source, it is recommended that the thermal resistance between the gnd pin of the adt7410 and the gnd of the heat source be reduced as much as possible.
adt7410 data sheet rev. c | page 24 of 24 outline dimensions controlling dimensions are in millimeters; inch dimensions (in parentheses) are rounded-off millimeter equivalents for reference only and are not appropriate for use in design. compliant to jedec standards ms-012-aa 012407-a 0.25 (0.0098) 0.17 (0.0067) 1.27 (0.0500) 0.40 (0.0157) 0.50 (0.0196) 0.25 (0.0099) 45 8 0 1.75 (0.0688) 1.35 (0.0532) seating plane 0.25 (0.0098) 0.10 (0.0040) 4 1 85 5.00 (0.1968) 4.80 (0.1890) 4.00 (0.1574) 3.80 (0.1497) 1.27 (0.0500) bsc 6.20 (0.2441) 5.80 (0.2284) 0.51 (0.0201) 0.31 (0.0122) coplanarity 0.10 figure 22. 8-lead standard small outline package [soic_n] narrow body (r-8) dimensions shown in millimeters and (inches) ordering guide model 1 temperature range temperature accuracy 2 package description package option adt7410trz ?55c to +150c 0.5c 8-lead standard small outline package [soic_n] r-8 adt7410trz-reel ?55c to +150c 0.5c 8-lead standard small outline package [soic_n] r-8 adt7410trz-reel7 ?55c to +150c 0.5c 8-lead standard small outline package [soic_n] r-8 EVAL-ADT7X10EBZ evaluation board 1 z = rohs compliant part. 2 maximum accuracy over the ?40 c to +105c temperature range. i 2 c refers to a communications protocol originally developed by philips semiconductors (now nxp semiconductors). ?2009C2017 analog devices, inc. all rights reserved. trademarks and registered trademarks are the property of their respective owners. d06560-0-9/17(c)

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