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1 / 29 page  Automotive Sensor Signal Conditioner with Dual Analog Output ZSSC3154 Datasheet © 2016 Integrated Device Technology, Inc. 1 January 22, 2016 Brief Description The ZSSC3154 is an integrated circuit for highly accurate amplification and sensor-specific correction of a bridge sensor signal. Up to two temperature sensors can also be read in parallel. The circuitry provides different configurations of the analog outputs to show two measurement results simultaneously. This also allows generating a com- plementary bridge sensor signal, which is often a requirement in safety-relevant applications. The ZSSC3154 can measure and process two exter- nal temperature sensors to compensate the temper- ature drift of the bridge sensor signal and to output a separate temperature signal. An integrated calibration microcontroller with an on- chip EEPROM performs the digital compensation of the sensor offset, the sensitivity, the temperature drift, and the nonlinearity of a sensor signal. The single-pass, digital end-of-line calibration com- bined with the integrated broken-chip detection sup- ports automatic and highly efficient mass production. Features • Differential bridge sensor input • Half-bridge sensor or temperature sensor input • Digital compensation of offset, gain, nonlinearity, and temperature dependency • Two analog outputs; behavior programmable by EEPROM configuration • Sequential analog output mode provides two measurement values at one output pin • On-chip diagnostic and safety features including sensor connection diagnostic and broken-chip detection • 2 EEPROM words for arbitrary user data • Multiple configurable output options Benefits • Bridge sensor signal validation for safety applications via two antivalent analog outputs or via half-bridge sensor measurement output • Simultaneous measurement of sensor signals, including temperature signal for compensation and for temperature output • Efficient use of non-calibrated elements for bridge sensors and temperature sensors without external trimming components • Single-pass end-of-line calibration algorithm minimizes production costs • Excellent EMC/ESD robustness and AEC-Q100 qualification Available Support • Evaluation Kit • Application Notes • Calculation Tools Physical Characteristics • Supply voltage: 4.5 to 5.5V • Maximum supply voltage: 7.7V • Input span: 1.8 to 267mV/V • ADC resolution: 14 bit • Output resolution: > 12 bit from 10% to 90% • Operating temperature range: -40°C to 150°C • Package: QFN32 (5x5mm; wettable flank) or die ZSSC3154 Basic Circuit VCC GND VDDA VSSA SDA SCL VDD AOUT1 VDDE VTN1 VBP VBN VSSE VBR_T VBR_B AOUT2 AOUT1 AOUT2 VTN2 DFBH |
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