Data Sheet Rev. 1.11 / July 2010 ZSC31050 Advanced Differential Sensor Signal Conditioner ZSC31050 Advanced Differential Sensor Signal Conditioner Brief Description Features ZSC31050 is a CMOS integrated circuit for highly Digital compensation of sensor offset, accurate amplification and sensor-specific sensitivity, temperature drift and non-linearity correction of bridge sensor and temperature Accommodates nearly all bridge sensor types sensor signals. The device provides digital (signal spans from 1 up to 275mV/V compensation of sensor offset, sensitivity, processable) temperature drift and non-linearity by a 16-bit Digital one-shot calibration: quick and precise RISC micro-controller running a polynomial Selectable compensation temperature T1 correction algorithm. source: bridge, thermistor, internal or external ZSC31050 accommodates virtually any bridge diode sensor type (e.g. piezo-resistive, ceramic-thickfilm Output options: voltage (0 to 5V), current 2 or steel membrane based). In addition, the IC can (4 to 20mA), PWM, I C, SPI, ZACwire (one- interface to a separate temperature sensor. The bi- wire interface), PWM, alarm 2 directional digital interfaces (IC, SPI, and Adjustable output resolution (up to 15 bits) ZACwire) can be used for a simple PC- versus sampling rate (up to 3.9kHz) controlled one-shot calibration procedure to Current consumption: typ. 2.5mA program a set of calibration coefficients into an on- Selectable bridge excitation: ratiometric chip EEPROM. Thus a specific sensor and a voltage, constant voltage or constant current ZSC31050 can be mated digitally: fast, precise and without the cost overhead associated with Input channel for separate temperature sensor trimming by external devices or laser. The Sensor connection and common mode check ZACwire interface enables an end-of-line (sensor aging detection) calibration of the sensor module. ZSC31050 has been designed for industrial, Physical Characteristics medical and consumer applications and is specifically engineered for most pressure sensors. Operation temperature -40 to +125C (-40 to It can also be used with force, torque, acceleration, +150C derated, depending on product version) angle, position and revolution sensors. Supply voltage 2.7 to 5.5 V with external JFET 5 to 40V Available in SSOP16 package or as die Benefits No external trimming components required ZSC31050 Overview PC-controlled configuration and calibration via digital bus interface simple, low cost VCC High accuracy (0.1% FSO -25 to 85C 0.25% FSO -40 to 125C) Sensor Module OUT Available Support ZSC31050 Application kit available (including calibration board, SSOP16 samples, software, technical documentation) GND Support for industrial mass calibration available Quick circuit customization possible for large production volumes digital output signal 2010 Zentrum Mikroelektronik Dresden AG Rev. 1.11 All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.