ZSC31050FEC datasheet(2/32 Pages) ETC2

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ZSC31050

Advanced Differential Sensor Signal Conditioner

stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.

Brief Description

ZSC31050 is a CMOS integrated circuit for highly

accurate amplification and sensor-specific correction

of bridge sensor and temperature sensor signals.

The device provides digital compensation of sensor

offset, sensitivity, temperature drift, and non-linearity

16-bit

RISC

microcontroller

running

polynomial correction algorithm.

The ZSC31050 accommodates virtually any bridge

sensor type (e.g., piezo-resistive, ceramic thick-film

or steel membrane based). In addition, it can

interface to a separate temperature sensor. The bi-

directional

digital

interfaces

2C™*, SPI, and

ZACwire

™) can be used for a simple PC-controlled

one-pass calibration procedure to program a set of

calibration coefficients into an on-chip EEPROM. A

specific sensor and a ZSC31050 can be mated

digitally: fast, precise and without the cost overhead

associated with trimming by external devices or

laser. The ZACwire™ interface enables an end-of-

line calibration of the sensor module.

Typical applications for the ZSC31050 include indus-

trial, medical, and consumer products. It is specifi-

cally engineered for most resistive bridge sensors;

e.g., sensors for measuring pressure, force, torque,

acceleration, angle, position, and revolution.

Benefits

 No external trimming components required

 PC-controlled configuration and calibration via

digital bus interface

– simple, low cost

 High accuracy (±0.1% FSO @ -25 to 85°C;

±0.25% FSO @ -40 to 125°C)

†

Available Support

 Evaluation kit available

 Support for industrial mass calibration available

 Quick circuit customization possible for large

production volumes

* I

2C™ is a trademark of NXP.

† Digital output signal

Features

 Digital compensation of sensor offset, sensitivity,

temperature drift, and nonlinearity

 Accommodates nearly all resistive bridge sensor

types (signal spans from 1mV/V up to 275mV/V)

 Digital one-pass calibration: quick and precise

 Selectable compensation temperature source:

bridge, thermistor, or internal or external diode

 Output options: voltage (0 to 5V), current

(4 to 20mA), PWM, I

2C™, SPI, ZACwire™

(one-wire interface), alarm

 Adjustable output resolution (up to 15 bits) versus

sampling rate (up to 3.9kHz)

 Current consumption: 2.5mA (typical)

 Selectable bridge excitation: ratiometric voltage,

constant voltage, or constant current

 Input channel for separate temperature sensor

 Sensor connection and common mode check

(sensor aging detection)

Physical Characteristics

 Operation temperature -40 to +125°C (-40 to

+150°C derated, depending on product version)

 Supply voltage: 2.7 to 5.5 V; with external JFET:

5 to 40V

 Available in SSOP16 package or as die

ZSC31050 Overview

OUT

VCC

GND

Sensor

Module

ZSC31050

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