ZSC31010

© 2011 Zentrum Mikroelektronik Dresden AG — Rev. 2.8

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.

Brief Description

tioner integrated circuit, which enables easy and pre-

cise calibration of resistive bridge sensors via

EEPROM. When mated to a resistive bridge sensor,

it will digitally correct offset and gain with the option

to correct offset and gain coefficients and linearity

over temperature. A second-order compensation can

be enabled for temperature coefficients of gain or

cates via ZMDI’s ZACwire™ serial interface to the

host computer and is easily mass calibrated in a

Windows® environment. Once calibrated, the output

pin Sig™ can provide selectable 0 to 1 V, rail-to-rail

ratiometric analog output, or digital serial output of

bridge data with optional temperature data.

Features



Digital compensation of sensor offset, sensitivity,

temperature drift, and non-linearity



Accommodates differential sensor signal spans,

from 1.2 mV/V to 60 mV/V



ZACwire™ One-Wire Interface (OWI)



Internal temperature compensation and detection

via bandgap PTAT (proportional to absolute

temperature)



Output options: rail-to-rail analog output voltage,

absolute analog voltage, digital ZACwire™ One-

Wire Interface (OWI)



Optional sequential output of both temperature

and bridge readings on ZACwire™ digital output



Fast response time, 1 ms (typical)



High voltage protection up to 30 V with

external JFET



Chopper-stabilized true differential ADC



Buffered and chopper-stabilized output DAC

Benefits



No external trimming components required



PC-controlled configuration and calibration via

ZACwire™ One-Wire Interface – simple, low cost



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

±0.25% FSO @ -50 to 150°C)



Single pass calibration – quick and precise



Suitable for battery-powered applications



Small SOP8 package

Available Support



Development Kit available



Multi-Unit Calibrator Kit available



Support for industrial mass calibration available



Quick circuit customization possible for large

production volumes

Physical Characteristics



Supply voltage 2.7 to 5.5 V, with external JFET

5.5V to 30 V

Current consumption de



pending on adjusted

sample rate: 0.25 mA to 1 mA

Wide operational temperature:



–50 to +150°C

ZSC31010 Application Circuit – Digital Output

ZSC3101

Bsink

VB

VBN

VSS

Vgate

0

P

0.1 F

V

upply

Ground

+

.5 V

OUT/OWI

s

4.5 to +5

VDD