View MLX90609_4113672.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

MLX90609
Angular Rate Sensor (Standard version) Standard Features and Benefits
High resolution and dynamic range Both digital (SPI) and analog outputs Low acceleration and angular rate cross sensitivity Low zero rate output drift Cost effective and compact solution High-performance MEMS sensor in mono crystalline Si yielding a superior long term behavior reliability and dynamic range Programmable bandwidth Factory set full scale range On chip EEPROM calibration Small footprint (SMD CLCC32) with horizontal mounting Operating temperature range: -40 to 85 C C
Application
Navigation (dead reckoning) Vehicle stability Robots
The MLX90609 has various build in features to support automotive and high volume applications (built-in on demand and non disruptive continuous self test, serial number in EEPROM...). These types of applications needs close cooperation between the customer and Melexis. Please contact Melexis in case you have such an application.
Ordering Information
Part No. Temperature Code Package Code MLX90609EEA-N2 E (-40 to 85 C C) EA (CLCC32) MLX90609EEA-E2 E (-40 to 85 C C) EA (CLCC32) MLX90609EEA-R2 E (-40 to 85 C C) EA (CLCC32) Note: Other Full Scale Ranges can be provided. Please contact Melexis. Option code N2 E2 R2 Full Scale Range 75 /s 150 /s 300 /s
Functional Diagram
General Description
The MLX90609 Angular Rate Sensor is a full gyroscopic system. A single SMD package contains a high performance silicon micro machined sensor with signal conditioning circuitry. It operates from 5V supply and is designed for demanding automotive applications. The MLX90609 delivers two output signals proportional to the angular rate perpendicular to the assembly surface. One of the output signals is in an analog voltage format (the output is 2.5V at zero angular rate and the full scale angular rate produces an output of 4.5V or 0.5V depending on direction of rotation) and the other one is in digital SPI format.
390109060901 Rev 007
Page 1 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version)
Table of Contents
1. Maximum Ratings ............................................................................................................ 3 2. Pin Definitions and Descriptions ...................................................................................... 4 3. MLX90609 General Electrical Specifications ................................................................... 5 4. MLX90609 Sensor Specific Specifications....................................................................... 6 5. Detailed Description......................................................................................................... 8 5.1 The Working Principle ................................................................................................. 8 5.2 Communication with the MLX90609 through the SPI.................................................. 9 5.3 Usage of the ADC ..................................................................................................... 12 5.3.1 ADC Instructions and Answers ........................................................................... 13 * The Refusal Answer...................................................................................... 13 * Command of the Status Reading (STATR) ................................................... 13 * Command of the ADC Control (ADCC) ......................................................... 13 * Command of the ADC Reading (ADCR) ....................................................... 13 5.3.2 Reading the Digital Angular Rate or Temperature (suggested procedure) ......... 14 6. Applications Examples................................................................................................... 15 7. Standard Information Regarding Manufacturability of Melexis Products with Different Soldering Processes .......................................................................................................... 18 8. ESD Precautions............................................................................................................ 18 9. Package Information ...................................................................................................... 19 10. Glossary of Terms........................................................................................................ 20 11. Disclaimer .................................................................................................................... 22
390109060901 Rev 007
Page 2 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version) 1. Maximum Ratings
MLX90609 operates without failure, for 6500 hours with a certain temperature profile in the 40C to +85C range. -
The MLX90609 meets the following maximum ratings over the entire operating temperature range and supply voltage range unless otherwise indicated. The current polarity is positive if the current flows into a terminal. All voltages are referenced to VSS.
Parameter. Supply Voltage, VDD Supply Voltage, VDD Output pins (OUTAR, OUTTEMP, all digital IO's) current limit, shorted to VDD or VSS pin Operating Temperature Range, TAMBIENT Operating Temperature Range, TJUNCTION Storage Temperature Range Package Thermal Resistance Latch-up withstand Acceleration shock survival -150 -40 -40 -55 -0.5 4.75 Min 7 5.25 25 85 110 125 100 150 1500 Max V V mA C C C C/W mA g CDF - AEC - Q100-004; VDD= 5.75V Shock 0.5ms, 3 axis Output not shorted Units Comments No latch-up or damage. Rise time (10 to 90%): tr 0.5 s. Operating within specifications VDD = 0 to 7V guaranteed by characterization
Table 1. Absolute maximum ratings
Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolutemaximum-rated conditions for extended periods may affect device reliability.
390109060901 Rev 007
Page 3 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version) 2. Pin Definitions and Descriptions
Figure 2-1. MLX90609 pin-out Group VSS Power Supply Pins VDD VDDA VSSA SCLK Serial Communication Pins MISO MOSI
SS
Pin Name Digital ground 0V Digital 5V Analog Supply 5V
Function
Analog ground, 0V, externally tied to digital ground Clock for serial data transfer, In, digital Master In, Slave Out Master Out, Slave In Slave/Chip select (active low) Test-mode control pin (internal pull-down, In application tight to ground for EMC reasons) In application tight to ground for EMC reasons Do not connect User on request self test input (for automotive applications) Continuous self test output (for automotive applications) Analog angular rate output Analog output of the temperature sensing module 2.5V Output reference voltage High voltage filter capacitor External capacitor for bandwidth setting Tie to VSSA Tie to VSSA Tie to VSSA External capacitor for bandwidth setting Table 2. MLX90609 Pin description
TEST Factory Test Pins TESTIN TESTOUT User Diagnostic Pins Output Pins SELFTEST ERROR OUTAR OUTTEMP VREF HVIN FLT General purpose pins TOPCAP CASE NC FLT
390109060901 Rev 007
Page 4 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version)
3. MLX90609 General Electrical Specifications
DC Operating Parameters TA = -40 to 85 VDD = 4.75V to 5.25V. C C,
Parameter. Supply Voltage Supply Current Output capacitive load to VDD or VSS Output resistive load Output, max Output, min Voltage Reference load current Note 3 Logic Input, Low Voltage Logic Input, High Voltage Clock Input, Low Voltage Clock Input, High Voltage Clock Input, Hysteresis Voltage Logic Output, Low Voltage Logic Output, High Voltage Input high current with pull-up Input low current with pull-up Input high current with pull-down Input low current with pull-down Tri-State Output Leakage current Symbol VDD IDD No output load Analog output Analog output 0 200k 4.5 0.5 -10 0 0.7 x VDD 0 2.8 1.1 0 2.4 -10 -10 200 -10 -10 0.4 VDD 10 -200 10 10 10 10 0.3 x VDD VDD 0.8 VDD Test Conditions Min 4.75 16 Typ Max 5.25 20 100 Units V mA pF Ohm V V A V V V V V V V A A A A A
U OUT , max U OUT , min
IREF VIL VIH VILC VIHC VHC VOL VOH IIH_UP IIL_UP IIH_DOWN IIL_DOWN IOZ
Analog output Analog output Analog output
SS , MOSI
SS , MOSI
SCLK SCLK SCLK MISO, ERROR, IO < 8 mA MISO, ERROR, IO < 8 mA
SS , SCLK, VIN = VDD SS , SCLK, VIN = VSS
MOSI, VIN = VDD MOSI, VIN = VSS MISO
Table 3. DC Electrical Characteristics
390109060901 Rev 007
Page 5 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version)
4. MLX90609 Sensor Specific Specifications
DC Operating Parameters TA = -40 to 85 VDD = 4.75V to 5.25V (unless otherwise specified) C C,
Parameter Output Full Scale (on OUTAR pin)
Symbol
FS OUT = U OUT , max - U OUT , min
Test Conditions
Min
Typ 4 1920
Max
Units V LSB
Full Scale Range
FSin
Factory set for N2 version Factory set for E2 version Factory set for R2 version Output, best fit based Data are given for N2, E2 and R2 versions respectively and according to the Full Scale Range Setting. At 25C, VDD=5V.
75 150 300 +/- 0.5 26.67 13.33 6.67 12.8 6.4 3.2 -5 5
/s
Linearity Note 2
% FSOUT mV//sec
Initial Scale Factor (sensitivity)
FS S0 = OUT FS IN
LSB//sec
Scale Factor drift (sensitivity
drift) Note 1
-40..+85C temperature range, supply voltage variation included
%S0
Zero Rate Output (Bias) Zero Rate Temperature drift (Bias drift) Note 1 Zero Rate Supply Drift
ZRO
at 25C, VDD=5V
2.5 1008
V LSB 5 % FSOUT
-40...+85C temperature range, VDD=5V
-5
0 250 120
4.75..5.25V at 25C
mV/V LSB/V 75 Hz nF /sec/Hz 2 %FSOUT
Bandwidth (-3 dB) Note 2 FLT to OUTAR capacitor value Note 2 Output Noise power spectral density Angular Rate Cross-sensitivity for 0x,0y Note 2
Selectable by external capacitor (section 7) 7 Hz Bandwidth (-4.5 to -1 dB) At 250C for a full-scale angular rate along 0x,0y 100 5% 0.03 1
390109060901 Rev 007
Page 6 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version)
Parameter Resonance Frequency Symbol FRES MLX90609 operational, all parameters are in spec., CFLT=10nF, C3=100nF. Capacitors names are referred to Fig.6-1 Test Conditions Min Typ 8.2 Max Units KHz
Wake-up time at power up Note 2
150
250
ms
Resolution of the internal ADC ADC conversion time Note 2 Voltage Reference Voltage Reference TC Temperature Sensor Temperature Sensor TC TCONV VREF0 TCVREF VTEMP0 TCTEMP Includes Track/Hold Acquisition Time at 25C VREF = VREF0 (1 + TCVREF x T) at 25C VOUTTEMP = VTEMP0 + TCTEMP x T 2.3 2.45
11 90 2.5 90 2.5 10 2.7 115 2.55
bit s V ppm/K V mV/K
Table 4. Sensor Specific Specifications
Notes: 1. Better performance can be obtained. Please contact Melexis.
2. These numbers are guaranteed by design and/or characterization. 3. The voltage reference should ideally not be loaded, as there is an internal ESD resistor of about 1.5 kOhm in series with the output.
390109060901 Rev 007
Page 7 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version)
5. Detailed Description
5.1 The Working Principle
The MLX90609 is a Z-axis rate-sensing device, also called yaw-rate sensing. It produces an analog positive going output voltage for clockwise (CW) rotation around the axis normal to the package top, i.e., clockwise when looking down at the package lid as well as a digital SPI signal proportional to the angular rate.
Figure 5-1. Angular rate (positive for clockwise rotation) to voltage output
The sensor is a MEMS gyroscope sensitive to Coriolis forces. To create a Coriolis force a movement must be induced. The gyro has an actuated oscillating mechanical structure (primary mode). The Coriolis force creates a second oscillating movement when the gyroscope rotates (secondary mode). As Coriolis force is usually extremely weak the primary mode is driven into resonance to keep the mechanical noise level low for the signal bandwidth used and to have a good sensitivity. A capacitance change in the secondary mode is detected and transformed into an output voltage by the electronic interface circuitry. The electronic interface must convert a change in the sensor capacitance C into a change in transducer output voltage VOUT according to the following transfer equation:
VOUT = Bias + Gain AngularRat e
The bias and gain are adjustable over temperature in order to compensate for the TC of sensor and readout. After adjusting the bias and gain values and after setting operating mode switches during the calibration process the transducer output voltage versus angular rate must stay as shown in Figure 5-1 over the specified temperature range.
390109060901 Rev 007
Page 8 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version)
5.2 Communication with the MLX90609 through the SPI
The MLX90609 has a serial communication interface compatible with Serial Peripheral Interface (SPI). Likewise SPI the Serial Interface of the MLX90609 specifies four signals: serial clock (SCLK); master data output, slave data input (MOSI); master data input, slave data output (MISO); and slave select ( SS ). The MLX90609 always operates as a slave. Therefore only MISO pin is an output. The MLX90609 is selected when the SS pin is low (see Figure 5-2Figure 5-2). When SS pin is high, data will not be accepted via the MOSI pin. The serial output pin (MISO) will remain in a high impedance state. High level of SS forces the serial interface into the start state of data exchange. Data is serially transmitted to the MLX90609 in 8 bit words (an instruction byte) and in 16 bit data words. Data is serially received from the MLX90609 in 16 bit words (an answer word). Most Significant Bit (MSB) is the first bit transmitted and received. Transmission: After the device is selected with SS going low, the instruction byte will be received by the MLX90609. On each rising edge of SCLK data from MOSI enter into an internal 8-bit shift register. The accepted instruction byte contains the op-code that defines the operations to be performed. Along with op-code this byte can also contain information such as EEPROM address or ADC mode (to be setup). Reception: After the 8th bit is received to the shift register, the command will be executed by the MLX90609. The format of the outgoing data is defined by the received instruction. All instructions evoke an answer. A full communication cycle (transmitting an instruction and receiving the full answer) is finished after 24th clock of the SCLK. Communication can be terminated by putting SS high. Some remarks: If an invalid op-code is received, it is rejected and the corresponding data is ignored. In this case a special "refusal answer" will be generated. It's recommended to use synchronization by SS after every data exchange to prevent a data distortion. If high level is applied to SS during an instruction byte transmission, the command will be ignored. If high level is applied to SS during the answer reception, the answer will be truncated. This can be used to limit the reading of the answer to e.g. one byte only (see Figure 5-3).
390109060901 Rev 007
Page 9 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version)
Figure 5-2. Serial Exchange Sequence (full answer reading)
Figure 5-3. Serial Exchange Sequence (the reading of the higher half of the answer)
390109060901 Rev 007
Page 10 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version)
Figure 5-4. Synchronous Data Timing
Parameter t1 t2 t3 t4 t5 t6 t7 t8 t9 t10
Limit Minimum 30 Minimum 80 Minimum 80 Minimum 0 Minimum 50 Minimum 80 Minimum 50 Maximum 50 Minimum 0 Maximum 40
Units ns ns ns ns ns ns ns ns ns ns
Test Conditions/Comments
SS to SCLK Rising Edge Setup Time
SCLK High Duration SCLK Low Duration
SS Hold Time
SS High Duration
Data In Setup Time Data In Hold Time Output Valid Output Hold Time Output Disable Time
Table 5. SPI Timing Characteristics (see Figure 5-4Figure 5-4)
390109060901 Rev 007
Page 11 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version)
5.3 Usage of the ADC
The MLX90609 has the unique feature of simultaneously delivering an analog and a digital output signal. The MLX90609 includes an internal 11-bit successive-approximation-register ADC with a sampleand-hold circuit and a programmable 2-channel analog multiplexer. The multiplexer connects the OUTAR pin or the OUTTEMP pin to the sample-and-hold circuit. After a power-up the ADC is in a sleep mode. Before usage of the sleeping ADC it's recommended to use an initial dummy conversion. The result of this dummy conversion should be skipped but the next conversions will be valid. After conversions the ADC can be put in the sleep mode again. A conversion must be initiated by means of the SPI command ADCC. This command turns the ADC on, sets a necessary channel and starts a conversion. To read a status of the conversion the ADCR or STATR commands can be used. As soon as the conversion is completed, its result should be read in the answer of the command ADCR (see tables 8, 9 and 10). There are two conversion formulas below. The formulas reflect the typical ADC behavior and can be used to evaluate the voltage on the OUTAR and OUTTEMP pins:
25 ADCcode + 400 12 25 VOUTTEMP (mV ) = ADCcode + 300 16 VOUTAR ( mV ) =
The ADCcode represents the 11-bit result of the conversion (see Table 10).
Table 6 gives a description of the bits that are mentioned in this section.
The ADEN bit selects the power management mode of the ADC: ADEN=0: ADC is switched to the sleep mode, no AD-conversion is allowed. ADEN=1: AD-conversion is allowed. This bit is set by the ADCC-command. After power-up bit ADEN is cleared. This bit will be set after a reset and will be toggled to zero after all initialization procedures inside the MLX90609. While BUSY=1, only refusal answers will be sent. The CHAN bit is used to select the input source for the ADC. CHAN=0: the angular rate channel. CHAN=1: the temperature sensor channel. This bit is set by the ADCC-command. After power-up bit CHAN is cleared. End of AD-conversion bit. EOC bit indicates an ADC state. EOC=0 : ADC in progress and can not be restarted. EOC=1 : AD-conversion has been completed and can be restarted. As a result, any attempt of the ADC starting will be rejected if EOC has a "0" state. Unknown Operation Code. This bit is set when a received operation code was not recognized. These bits are reserved or have an undefined state. Table 6. SPI bits
ADEN
BUSY
CHAN
EOC
OPC X
390109060901 Rev 007
Page 12 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version)
5.3.1 ADC Instructions and Answers There are three SPI commands that are used to control embedded ADC of the MLX90609: STATR, ADCC and ADCR.
*
The Refusal Answer
Every instruction sent to the MLX90609 has an answer. If the MLX90609 is not able to accept the instruction a refusal answer will be transmitted out. This answer has a unique format which is shown in the Table 7. The refusal answer is the only one that has a set MSB. The other bits help to understand a possible reason for the instruction rejection.
Bit15 1 Bit14 OPC Bit13 EOC Bit12 X Bit11 X Bit10 BUSY Bit 9 X Refusal answer Bit 8 Bit 7 X X Bit 6 X Bit 5 X Bit 4 X Bit 3 X Bit 2 X Bit 1 X Bit 0 X
Table 7. Refusal answer format
*
Command of the Status Reading (STATR)
Instruction Bit 7 1 Bit 6 0 Bit 5 0 Bit 4 0 Answer Bit 7 X Bit 3 1 Bit 2 0 Bit 1 0 Bit 0 0
Bit15 0
Bit14 X
Bit13 EOC
Bit12 X
Bit11 X
Bit10 X
Bit 9 X
Bit 8 X
Bit 6 X
Bit 5 X
Bit 4 X
Bit 3 CHAN
Bit 2 ADEN
Bit 1 X
Bit 0 X
Table 8. Format of the STATR command
*
Command of the ADC Control (ADCC)
Instruction Bit 7 1 Bit 6 0 Bit 5 0 Bit 4 1 Answer Bit 7 X Bit 3 CHAN Bit 2 ADEN Bit 1 0 Bit 0 0
Bit15 0
Bit14 X
Bit13 EOC
Bit12 X
Bit11 X
Bit10 X
Bit 9 X
Bit 8 X
Bit 6 X
Bit 5 X
Bit 4 X
Bit 3 CHAN
Bit 2 ADEN
Bit 1 X
Bit 0 X
Table 9. Format of the ADCC command (The answer is the same as for the STATR command)
*
Command of the ADC Reading (ADCR)
Instruction Bit 7 1 Bit 6 0 Bit 5 0 Bit 4 0 Bit 3 0 Bit 2 0 Bit 1 0 Bit 0 0
Bit15 0
Bit14 X
Bit13 EOC
Bit12 X
Bit11 AD10
Bit10 AD9
Bit 9 AD8
Answer Bit 8 Bit 7 AD7 AD6
Bit 6 AD5
Bit 5 AD4
Bit 4 AD3
Bit 3 AD2
Bit 2 AD1
Bit 1 AD0
Bit 0 0
AD10...AD0
A result of the AD-conversion. These bits are valid only when EOC bit is set.
Table 10. Format of the ADCR command
390109060901 Rev 007
Page 13 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version)
5.3.2 Reading the Digital Angular Rate or Temperature (suggested procedure)
There is a recommended sequence below to obtain digital data from the ADC. Notes: - The bit with leftmost position should be shifted first. - Below "x" means any value: "0" or "1".
*
Step 1 (put ADC to the active mode if it wasn't)
Use SPI to send ADCC instruction (MOSI): 1 0 0 1 x 1 0 0 x x x x x x x x x x x x x x x x And check 15th bit of the answer (MISO): 0xxxxxxxxxxxxxxx If 15th bit is zero, the instruction is accepted. Before to go to the Step 2 provide a delay > 115 s or wait till the EOC bit is set.
*
Step 2 (conversion start)
Use SPI to send ADCC instruction(MOSI):1 0 0 1 CHAN 1 0 0 x x x x x x x x x x x x x x x x And check 15th bit of the answer (MISO): 0xxxxxxxxxxxxxxx th If 15 bit is zero, the instruction is accepted. CHAN bit specifies the input source of the ADC. CHAN=0: The angular rate signal. CHAN=1: The temperature sensor signal. Go to the Step 3.
*
Step 3 (polling and result obtaining)
Use SPI to send ADCR instruction and check 15th and 13th bits of the answer: 1000 0000 xxxx x x x x x x x x x x xx 0 x EOC x AD10 AD9 AD8 AD7 AD6 AD5 AD4 AD3 AD2 AD1 AD0 0 If 15th bit is zero, the instruction is accepted. If 13th bit (EOC) is zero, the conversion is still in progress and the result of the conversion (bits AD10...AD0) is not valid. As soon as the EOC bit is set the conversion is completed and the result is valid. Instead of the polling of the EOC bit one can use a simple delay that should be bigger than a maximal conversion time (>115 s, see table 4). Go to the Step 2 to do the next conversion or to the Step 4 to put ADC to the sleep mode.
*
Step 4 (put ADC to the sleep mode if it's necessary)
Use SPI to send ADCC instruction (MOSI): 1 0 0 1 x 0 0 0 x x x x x x x x x x x x x x x x And check 15th bit of the answer (MISO): 0xxxxxxxxxxxxxxx If 15th bit is zero, the instruction is accepted.
390109060901 Rev 007
Page 14 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version)
6. Applications Examples
Figure 6-1. MLX90609 with simultaneous analog and digital output
The MLX90609 can simultaneously output analog and digital signals. The analog output signal can be fed to a microcontroller (C) that contains an analog-to-digital converter. A multiplexer can be used to select between the temperature and the angular rate signals. The MLX90609 generates an internal reference voltage used for supplying the ADC, thereby maintaining accuracy regardless of the supply voltage of the C. Whilst supplying the analog output signal, the MLX90609 can simultaneously send a digital output signal to the C through the SPI. Notes: 1. The bandwidth of the MLX90609 can be selected by connecting an appropriate capacitor in the FLT pin. CFLT implements a first order low pass filter cascaded with an internal 4-th order SC filter. The -3dB bandwidth set by CFLT is: fOUT =0.16 / (ROUT*CFLT), with ROUT = 200k (typ). It is recommended to use CFLT even if the cut-off frequency is not specified to reduce switching spikes at the output. It is recommended to use X5R or X7R type capacitors. Min. voltage for C3 should be 25V or more, and 10V or more for the other capacitors. Recommended values of decoupling capacitors C1 and C2 are 1.0F and 0.1F for C3. These capacitors should be placed as close as possible to their respective pins. HVIN is a high impedance node. Be sure that an equivalent leakage resistance at this node isn't less then 2M
2.
3.
390109060901 Rev 007
Page 15 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version)
Figure 6-2. MLX90609 with analog output only
If only an analog output signal is required, the MLX90609 doesn't need to communicate through the SPI pins. All other pins continue to be used as described above.
Figure 6-3. MLX90609 with digital output only
If only a digital output signal is required the MLX90609 uses the SPI to send the temperature and the angular rate in a digital format. The operation mode only through the SPI allows a reduction of cost and complexity in the interfacing to system microcontroller or microprocessor. All the pins in the above schematics continue to be used as described above.
390109060901 Rev 007
Page 16 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version)
In order to adapt the MLX90609 for a 3.3V Microcontroller one can use the below schematic:
Figure 6-4. Possible interfacing with 3.3V C
390109060901 Rev 007
Page 17 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version)
7. Standard Information Regarding Manufacturability of Melexis Products with Different Soldering Processes
Our products are classified and qualified regarding soldering technology, solderability and moisture sensitivity level according to following test methods: Reflow Soldering SMD's (Surface Mount Devices) IPC/JEDEC J-STD-020 Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface Mount Devices (Classification reflow profiles according to table 5-2) EIA/JEDEC JESD22-A113 Preconditioning of Nonhermetic Surface Mount Devices Prior to Reliability Testing (Reflow profiles according to table 2) Wave Soldering SMD's (Surface Mount Devices) and THD's (Through Hole Devices) EN60749-20 Resistance of plastic- encapsulated SMD's to combined effect of moisture and soldering heat EIA/JEDEC JESD22-B106 and EN60749-15 Resistance to soldering temperature for through-hole mounted devices Iron Soldering THD's (Through Hole Devices) EN60749-15 Resistance to soldering temperature for through-hole mounted devices Solderability SMD's (Surface Mount Devices) and THD's (Through Hole Devices) EIA/JEDEC JESD22-B102 and EN60749-21 Solderability For all soldering technologies deviating from above mentioned standard conditions (regarding peak temperature, temperature gradient, temperature profile etc) additional classification and qualification tests have to be agreed upon with Melexis. The application of Wave Soldering for SMD's is allowed only after consulting Melexis regarding assurance of adhesive strength between device and board.
8. ESD Precautions
Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always observe Electro Static Discharge control procedures whenever handling semiconductor products.
390109060901 Rev 007
Page 18 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version)
9. Package Information
The MLX90609 is packaged in a 32 pin JESD30C compliant Ceramic Quad Flat None leaded CQFN32 -ceramic housing. The CQFN32 is commonly called CLCC32 or LCCC32. Note: All dimensions are given in mm (inch).
Figure 9-1. Package Dimensions, Bottom View
Figure 9-2. Side and Top View of the MLX90609
390109060901 Rev 007
Page 19 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version)
Figure 9-3. MLX90609 Bottom View
Figure 9-4. Land Pattern Design (top view)
10. Glossary of Terms
Angular Rate Sensor
A sensor that measures rotational velocity measured in degrees per second around its sensitive axis. Angular rate sensors are sometimes referred to as gyro or gyroscope.
Bandwidth
The input signal frequency range from DC (zero frequency) up to the frequency where a -3dB amplitude decay (between mechanical input and rate output) is observed. In the case of the present device, the bandwidth is user selectable by means of an external capacitor.
Coriolis Effect
Coriolis Effect is an inertial force described by the 19th-century engineer-mathematician GustaveGaspard Coriolis in 1835. Coriolis showed that, if the ordinary Newtonian laws of motion of bodies are to be used in a rotating frame of reference, an inertial force, acting to the right of the direction of body motion for counterclockwise rotation of the reference frame or to the left for clockwise rotation, must be included in the motion equations. In effect, the Coriolis force is an apparent deflection of the path of an object that moves within a rotating coordinate system. The object does not actually deviate from its path, but it appears to do so because of the motion of the coordinate system.
390109060901 Rev 007
Page 20 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version)
Primary and Secondary Frame
In vector notation the Coriolis force FCoriolis is given by:
FCoriolis = 2m (v x )
Where m is the mass of the object, v its velocity and system. is the angular rate of the rotating coordinate
To create a Coriolis Force (FCoriolis), a movement or velocity (v) must be induced. The gyroscope system has got an electrically actuated oscillating mechanical structure, called primary frame (m). When the gyroscope rotates ( ) a Coriolis force FCoriolis acts on this frame. To measure the Coriolis force, a part of the frame - called the secondary frame - is designed to allow a motion as a reaction to the applied Coriolis force. This synchronous motion is sensed electrically by a capacitive readout circuit. The gyroscope is a vibratory system with two orthogonal vibrating frames: the primary actuated vibrating frame and the secondary sensed vibrating frame.
Zero Rate Output (ZRO) Drift
The bounds within which the circuit output signal may vary as the temperature varies across the operating temperature range with no applied angular rate.
List of Acronyms
ADC EEPROM EMC ESD HBM JEDEC MEMS SMD SO SPI TC CDF-AEC-100 Analog to Digital Converter Electrically Erasable PROM Electro Magnetic Compatibility Electrostatic Discharge Human Body Model of ESD Joint Electronics Design Engineering Council Micro Electro-Mechanical Sensor Surface Mounted Device Swiss Outline or Small Outline Serial Peripheral Interface Temperature Coefficient Automotive Electronics Council - Stress Test Qualification for Integrated Circuits
390109060901 Rev 007
Page 21 of 22
Data Sheet January/08
MLX90609
Angular Rate Sensor (Standard version)
11. Disclaimer
Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. Melexis makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. Melexis reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with Melexis for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical lifesupport or life-sustaining equipment are specifically not recommended without additional processing by Melexis for each application. The information furnished by Melexis is believed to be correct and accurate. However, Melexis shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interrupt of business or indirect, special incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of Melexis' rendering of technical or other services. (c) 2005 Melexis NV. All rights reserved.
For the latest version of this document, go to our website at www.melexis.com Or for additional information contact Melexis Direct: Europe, Africa, Asia:
Phone: +32 1367 0495 E-mail: sales_europe@melexis.com
America:
Phone: +1 603 223 2362 E-mail: sales_usa@melexis.com
ISO/TS 16949 and ISO14001 Certified
390109060901 Rev 007
Page 22 of 22
Data Sheet January/08

▲Up To Search▲

Price & Availability of MLX90609

	To Download MLX90609 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .