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evaluation board user guide ug - 138 one technology way ? p. o . box 9106 ? norwood, ma 02062 - 9106, u.s.a. ? tel: 781.329.4700 ? fax: 781 .461.3113 ? www.analog.com evaluating the adt7320 / adt7420 temperature sensors please see the last page for an important warning and legal terms and conditions . rev. a | page 1 of 16 features supports the adt7320 and adt7420 temperature sensors powered from usb port no additional power supply required pc s oftware fo r control of temperature sensors supported operating systems: windows 200 0 and higher additional external evaluation board for remote temperature measurements ( adt7x20ebz ) additional extern al flex boards for faster thermal response evaluation kit contents fully fitted printed circuit board (pcb) with usb interface additional external pcb evaluation s oftware cd usb c able documentation wiring guide optional e quipment adt7320 fbz flex board adt7420fb z flex board general description this user guide describes the e va l - adt7x20ebz , adt7320 fbz , and adt7420fbz evaluation board hard ware and software and includes detailed schematics and pcb layout artwork. the ad t7x20 ( e va l - adt7x20ebz) evaluation board is a compact, easy - to - use platform for evaluating all features of the adt73 20 and adt7420 temperature sensors. the adt7x 20fbz flex boards are optional extras to the evaluation kit, which can be used as an extension to the adt7 x 20 evaluation board or as standalone dev ices for interfacing with a microcontroller or fpga. the evaluation kit allows the user to evaluate the performance of the adt7320 and adt7420 temperature sensors using a pc. the kit consists of two boards; a main board connected to the pc th r ough the usb port and an external board. the external board and f lex board are attached to the main board using wires that can withstand high tempe ratures , and can be used for remote temperature measurements in oil baths or ovens where the temperature exceeds the specifications of the usb cable. the evaluation software allows the user to select the main board or the external board , as well as the de sired temperature sensor device. when using the adt7x20 evaluation board, in addition to this user guide , the user should also consult the adt7320 and adt7420 data sheets (available at the analog devices, inc., website , www.analog.com ) . 09023-001 figure 1 . adt7x20 evaluation board main board
ug- 138 evaluation board user guide rev. a | page 2 of 16 table of contents features .............................................................................................. 1 evaluation kit contents ................................................................... 1 optional equipment ......................................................................... 1 general description ......................................................................... 1 revision history ............................................................................... 2 external board photographs ........................................................... 3 evaluation board software .............................................................. 4 software installation .................................................................... 4 using the adt7x20 evaluation software ................................. 4 device selection ............................................................................4 board selection ..............................................................................4 device evaluation software .........................................................5 wiring guidelines .............................................................................8 evaluation board schematics and artwork ...................................9 ordering information .................................................................... 15 bill of materials ........................................................................... 15 related links ................................................................................... 16 revision history 8/13 rev. 0 to rev. a ad ded optional adt7320 fbz and adt74 20 fbz flex boards .......................................................................... universal 12 /12 revision 0: initial version
evaluation board user guide ug- 138 rev. a | page 3 of 16 external board photo graphs 09023-002 figure 2 . adt7x20 evaluation board external board 09023-103 figure 3 . adt7320fbz evaluat ion board external board 09023-104 figure 4 . adt74 20 fbz evaluation board external board
ug- 138 evaluation board user guide rev. a | page 4 of 16 evaluation board sof tware software installatio n the adt7x20 evaluation kit includes the evaluation software on a cd - rom. the software is compatible with windows? 2000/xp , vista, and window s 7 . the evalua tion software must be installed before connecting the evaluation board to the usb port of the pc to ensure that windows recognize s it and to ensure that the driver is installed correctly. to install the software , run the adt7x20 evaluation s oftware install.exe file from the cd - rom . after the installation has completed, connect the ad t7x20 evaluation board to the pc usb port using the cable supplied. when the evaluation board is detected by the operating system , proceed through any dialog boxe s that appear to finalize the installation . using the ad t 7 x 2 0 evaluation softwar e during installation, a shortcut to the evaluation software is installed in the start menu. from the start menu, select all programs , then analog devices , and click a dt7x20 evaluation software . you c a n l aunch the software using either this shortcut or by running the adt7x20 evaluation software.exe file from the installation directory. device s election when the evaluation software is launched, a window appear s prompting you t o select the desired device , as shown in figure 5 . 09023-003 figure 5. device selection window the adt7320 uses the spi interface whereas the ad t 7420 uses the i 2 c. other than the control interface, the two devices are identical in performance . board selection the device selected at the previous step in the device s election section can be located either on the main board or on the external board. after the desired device i s selected, a window appear s prompting you to select the location of the device (see figure 6 ). 09023-004 figure 6. on - board/ external device selection window
evaluation board user guide ug- 138 rev. a | page 5 of 16 device evaluation software after you complete the devi ce and board selections , the evalua - tion software loads , allowing full control over the selected device. the s oftware layout is the same for both the adt7320 and adt7420 . there are three tabs in the evaluation software : ? configuration register ? temperature m onitor ? adt7x20 registers the evaluation software also has easy setup and close options. configuration register this tab allows you full control over the configuration register of the selected device , as shown in figure 7 . at sta rt up, the evaluation software initializes the configuration register to the default value of 0x90 (hex adecimal ). for more details on how to set the configuration register , consult the device data sheet. 09023-005 figure 7. configuration register tab
ug- 138 evaluation board user guide rev. a | page 6 of 16 temperature monitor this tab displays the temperature reading from the selected device as well as the status of the alarms. this tab includes five control options (see figure 8 ) : ? temperature threshold ? temperature value ? set temperature limits ? log data ? temperature value s temperature threshold if the temperature goes above or below the h igh and l ow l imits defined in the set temperature limits section or above the c ritical t hreshold , the temperature high limit threshol d , temperature low limit threshold , and temperature critical threshold indicators appear green. temperature value this displays the actual adc temperature in twos complement and degrees c elsius respectively. set temperature limits this section allows you t o update the high, low, critical, and hysteresis limits. these adc values are loaded into the device. because the conversion format is twos complement, any value over 4095 is a negative number. to change the value, you can use the arrow keys or type a numb er i n the box to update the limits. the graph labeled temperature conversion measurement displays the variation in time of the high and low temperature limits as well as the current temperat ure in two s complement format . at startup, the evaluation software initializes the tempera - ture limits registers (t high , t low , t crit , and t hyst ) to the default values shown in figure 6 . 09023-006 figure 8. temperature monitor
evaluation board user guide ug- 138 rev. a | page 7 of 16 log data the software can save the acquired data in to an excel or t ext file by clicking the log data button , which opens the dialog box show n in figure 7 from this window, you can choose to log the adc , the celsius value , or both , as well as set the logging interval ( see figure 7 ). 09023-007 figure 9. data logging temperature va lu es this section gives you an update of all the t emperature limits and the t emperature reading of the part. these values are a replica of the adc values in the set temperature limits section, converted into degrees celsius. the graph labeled temperature in celsius displays the variation in time of the high and low temperature limits as well as the current tempera - ture in degrees celsius. register map this sectio n displays all the r egister values for the part. you can read or write to any register by using the read and wr i te b uttons (see figure 8 ). easy setup the easy setup button restores all registers with default values. close this but ton closes the current window and returns to the selection window (see figure 3 ). 09023-008 figure 10 . register map
ug- 138 evaluation board user guide rev. a | page 8 of 16 wiring guide lines table 1 is a wiring guide for th e adt7320fbz and table 2 is a wiring guide for the adt7420fbz. table 1 . adt7320fbz wiring guide color reference designator red vcc black ground white sclk blue dout green din yellow cs table 2 . adt7420fbz wiring guide color reference designator red vcc black ground white sclk blue dout green din yellow cs
evaluation board user guide ug- 138 rev. a | page 9 of 16 evaluation board sch ematics and artwork 09023-009 d2 figure 11 . adt7x20 evaluation board schematic main board temperature sensor circuit
ug- 138 evaluation board user guide rev. a | page 10 of 16 09023-010 figure 12 . adt7x20 evaluation board schematic main board usb controller circuit
evaluation board user guide ug- 138 rev. a | page 11 of 16 09023-011 adt7420ucpz adt7320ucpz i 2 c address is set through software figure 13 . adt7x20 evaluation boa rd schematic external board circuit
ug- 138 evaluation board user guide rev. a | page 12 of 16 09023- 1 14 figure 14 . adt7420fbz flex board 09023- 1 15 figure 15 . adt7320fbz flex board
evaluation board user guide ug- 138 rev. a | page 13 of 16 09023-012 figure 16 . adt7x20 evaluation board main board component side ( layer 1) 09023-013 figure 17 . adt7x20 evaluation board main board solder side ( layer 2) 09023-014 figure 18 . adt7x20 evaluation board main board silkscreen 09023-015 figure 19 . adt7x20 evaluation board external board component side (layer 1) 09023-016 figure 20 . adt7x20 evaluation board external board solder side (layer 2)
ug- 138 evaluation board user guide rev. a | page 14 of 16 09023-017 figure 21 . adt7x20 evaluation board external board silkscreen 09023-023 component side figure 22 . adt7320fbz component side (layer1) 09023-023 solder side figure 23 . adt7320fbz solder side (layer 2) 09023-024 silkscreen component side figure 24 . adt7320fbz silkscreen 09023-025 component side figure 25 . adt7320fbz component side( layer1) 09023-026 solder side figure 26 . adt7320fbz solder side(layer 2) 09023-027 component side figure 27 . adt7320fbz silkscreen
evaluation board user guide ug- 138 rev. a | page 15 of 16 ordering i n formation bill of materials table 3 .component listing main board qty . refe rence designator description value supplier/ordering no. 2 c1, c2 50 v npo smd c eramic c apacitor 22 pf farnell 722005 1 c3 10 v smd t antalum c apacitor 47 f farnell 1432591 1 c4 10 v smd t antalum c apacitor 2.2 f farnell 498646 14 c5, c6, c7, c8, c9, c10, c12, c13, c14, c15, c16, c18, c19, c20 16 v x7r m ultilayer c eramic c apacitor 0.1 f farnell 1216538 3 c11, c21, c22 10 v smd t antalum c apacitor 10 f farnell 197130 1 c17 10 v dc y5v c eramic c apacitor 1 f farnell 3188840 1 d1 green led vlmp31g2j1 farnell 1328320 2 d2, d3 red led vlms31j1k2 farnell 1328350 1 j1 usb mini - b connector 54819 - 0579 digi - key wm17116ct -nd 1 j2 10- pin terminal block n/a f arnell 9632179 2 q1, q2 low power bipolar transistor bc807 farnell 1081222 1 r1 smd resistor 0 ? farnell 772227 1 r2 smd resistor 10 k? farnell 9330399 2 r3, r6 smd resistor 100 k? farnell 911471 2 r4, r5 smd resistor 2.2 k? farnell 196319 3 r7, r11, r13 smd resistor 270 ? farnell 9331964 6 r8, r9, r10, r12, r14, r15 smd resistor 10 k? farnell 911355 1 u1 temperature sensor ic adt7320upcz analog devices adt7320upcz 1 u2 temperature sensor ic adt7420upcz analog devices adt7420upcz 1 u3 64 kb i 2 c se rial eeprom 24lc64 digi - key 24lc64 - i/sn -nd 1 u4 precision low dropout voltage regulator adp3303 ar - 3.3 analog devices adp330 3 ar z - 3.3 1 u5 dual spdt switch adg787brmz analog devices adg787brmz 1 u6 usb microcontroller cy7c6813 - 56lfc embassy cy7c68013 - 56lf c 1 y1 smd crystal 24 mhz farnell 9509658 table 4 . component listing external board qty . reference designator description value supplier/ordering number 2 c1, c3 16 v x7r multilayer ceramic capacitor 0.1 f farnell 1216538 2 c2, c4 10 v smd tantalum capacitor 10 f farnell 197130 2 d1, d2 green led vlmp31g2j1 farnell 1328320 4 r1, r2, r4, r5 smd resistor 10 k? farnell 9330399 2 r3, r6 smd resistor 270 ? farnell 9331964 1 u1 temperature sensor ic adt7320upcz analog devices adt7320upcz 1 u2 temperature sensor ic adt7420upcz analog devices adt7420upcz table 3 . component listing adt7320fbz flexi board qty. reference designator description value supplier/ordering number 1 c1 16 v x7r multilayer cer amic capacitor 0.1 f farnell 1216538 2 r1, r2 smd resistor 10 k? farnell 9330399 1 u1 temperature sensor ic adt7320upcz analog devices adt7320upcz table 4 . component listing adt7420fbz flexi board qty. reference designator description value supplier/ordering number 1 c1 16 v x7r multilayer ceramic capacitor 0.1 f farnell 1216538 2 r1, r2 smd resistor 10 k? farnell 9330399 1 u1 temperature sensor ic adt7 4 20upcz analog devices adt7 4 20upcz
ug- 138 evaluation board user guide rev. a | page 16 of 16 related links resource description adt7320 product page, 0.25c accurate, 16 - bit digital spi temperature sensor adt7420 product page, 0.25c accurate, 16 - bit digital i 2 c temperature sensor i 2 c refers to a communications protocol originally developed by philips semiconductors (now nxp semiconductors). esd caution esd (electrostatic discharge) sensitive device . charged devices and circuit boards can discharge without detection. although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy esd. therefore, proper esd precautions s hould be taken to avoid performance degradation or loss of functionality. legal terms and conditions by using the evaluation board discussed herein (together with any tools, components documentation or support materials, the evaluation board), you are a greeing to be bound by the terms and conditions set forth below (agreement) unless you have purchased the evaluation board, in which case the analog devices standard terms and conditions of sale shall govern. do not use the evaluation board until you hav e read and agreed to the agreement. your use of the evaluation board shall signify your acceptance of the agreement. this ag reement is made by and between you (customer) and analog devices, inc. (adi), with its principal place of business at one techn ology way, norwood, ma 02062, usa. subject to the terms and conditions of the agreement, adi hereby grants to customer a free , limited, personal, temporary, non - exclusive, non - sublicensable, non - transferable license to use the evaluation board for evaluati on purposes only. customer understands and agrees that the evaluation board is provided for the sole and exclusive purpose referenced above, and agrees not to use the evaluation board for any other purpose. furthe rmore, the license granted is expressly mad e subject to the following additional limitations: customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the evaluation bo ard; and (ii) permit any third party to access the evaluation board. as used herein, the term third party includes any entity other than adi, customer, their employees, affiliates and in - house consultants. the evaluation board is not sold to customer; all rights not expressly granted herein, including ownership of the evaluation board, are reser ved by adi. confidentiality. this agreement and the evaluation board shall all be considered the confidential and proprietary information of adi. customer may not disclose or transfer any portion of the evaluation board to any other party for any reason. u pon discontinuation of use of the evaluation board or termination of this agreement, customer agrees to promptly return the evaluation board to adi. additional restrictions. customer may not disassemble, decompile or reverse engi neer chips on the evaluatio n board. customer shall inform adi of any occurred damages or any modifications or alterations it makes to the evaluation board, including but not limited to soldering or any other activity that affects the material content of the evaluation board. modific ations to the evaluation board must comply with applicable law, including but not limited to the rohs directive. termination. adi may terminate this agreement at any time upon giving written notice to customer. customer agrees to return to adi the evaluati on board at that time. limitation of liability. the evaluation board provided hereunder is provided as is and adi makes no warranties or representations of any kind with respect to it. adi specifically disclaims any representations, endorsements, g uarant ees, or warranties, express or implied, related to the evaluation board including, but not limited to, the implied warranty of merchantability, title, fitness for a particul ar purpose or noninfringement of intellectual property rights. in no event will adi and its licensors be liable for any incidental, special, indirect, or consequential damages resulting from customers possess ion or use of the evaluation board, including but not limited to lost profits, delay costs, labor costs or loss of goodwill. adis total liability from any and all causes shall be limited to the amount of one hundred us dollars ($100.00). export. customer agrees that it will not directly or indirectly export the evalua tion board to another country, and that it will comply with all ap plicable united s tates federal laws and regulations relating to exports. governing law. this agreement shall be governed by and construed in accordance with the substantive laws of the commonwealth of massachusetts (excluding conflict of law rules). any legal action regar ding this agreement will be heard in the state or federal courts having jurisdiction in suffolk county, massachusetts, and cu stomer hereby submits to the personal jurisdiction and venue of such courts. the united nations convention on contracts for the int ernational sale of goods shall not apply to this agreement and is expressly disclaimed. ? 2013 analog devices, inc. all rights reserved. trademarks and registered trademarks are the property of their respec tive owners. ug09023 - 0 - 8/13(a)

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