MLX90326 Analog 0-5V Sensor Interface IC 1. Features and Benefits 2. Application Examples Analog 0-5V ratiometric output Pressure transducers, strain gauges, Single pin programming (through output) accelerometers, position sensors, etc Fast response time Industrial sensors Extended temperature range Automotive after market sensors Cost effective electronic trimming All resistive bridge sensors Second order compensation of offset and gain Internal temperature sensor provided 3. Ordering information Product Code Temperature Package Code Option Code Packing Form Code Code TU MLX90326LFR L FR AAA-000 RE MLX90326LFR L FR AAA-000 Legend: Temperature Code: L for Temperature Range -40C to 150C Package Code: FR for SSOP 209 mil Option Code: xxx-000: Standard version Packing Form: RE for Reel, TU for Tube Ordering example: MLX90326LFR-AAA-000-TU 4. Functional Diagram 5. General Description The MLX90326 covers the most typical resistive type VDD 7bits of Wheatstone bridge applications for use in an CSOF DAC industrial or automotive after market environment. Chopping Chopping INM + It is a monolithic silicon analog integrated sensor Gdido Gdts - Gcs INP interface that converts small changes in resistors, IINV VDD FLT 1 2 configured in a full Wheatstone bridge on a sensing 10bits DAC VDD element, to large output voltage variations. TMP Application Select Fine Offset = 10bits Fine Gain = Oo + O1.(T-T1) + O2.(T-T1) DAC X2.117 X(-1.667) mode Output Go + G1.(T-T1) + G2.(T-T1) Programming Fine Offset Fine Gain VDD mode I/O Go,G1,G2 EEPROM TMP T Oo,O1,O2 TMP ALU The signal conditioning includes gain adjustment, ADC Go,G1,G2,Oo,O1,O2,T1, Gcs, Gain T1 10bits TMP Gdido, Gdts, IINV, TMP Select, Offset TMP Offset, TMP Gain, CSOF, CLKAdj, Clamp settings offset control and second order temperature compensation in order to accommodate variations of the different resistive sensing elements. Compensation values are stored in EEPROM and can be reprogrammed with an interface circuit and a provided software. The MLX90326 is programmed with a single wire serial interface through the output pin. REVISION 003 DECEMBER 2016 Page 1 of 13 3901090326 MLX90326 Analog 0-5V Sensor Interface IC Contents 1. Features and Benefits ............................................................................................................................ 1 2. Application Examples ............................................................................................................................. 1 3. Ordering information ............................................................................................................................. 1 4. Functional Diagram ............................................................................................................................... 1 5. General Description ............................................................................................................................... 1 6. Absolute Maximum Ratings ................................................................................................................... 3 7. Pin Definitions and Descriptions ............................................................................................................ 4 8. General Electrical Specifications ............................................................................................................ 5 9. General Description ............................................................................................................................... 7 10. Unique Features .................................................................................................................................. 7 11. Application Information ....................................................................................................................... 8 11.1. Ratio-metric mode with external temperature sensor................................................................ 8 11.2. Ratio-metric mode with no external temperature sensor........................................................... 9 11.3. Non Ratio-metric mode with external temperature sensor........................................................ 9 11.4. Non Ratio-metric mode with no external temperature sensor................................................. 10 12. Standard information regarding manufacturability of Melexis products with different soldering processes ............................................................................................................................................ 11 13. ESD Precautions ................................................................................................................................. 11 14. Package Information .......................................................................................................................... 12 15. Contact .............................................................................................................................................. 13 16. Disclaimer .......................................................................................................................................... 13 REVISION 003 DECEMBER 2016 Page 2 of 13 3901090326