ZMD31015DEB 参数 Datasheet PDF下载

ZMD31015

RBic

dLite

™ Low-Cost Sensor Signal Conditioner with Diagnostics

Brief Description

The RBic

dLite

™ is adjustable to nearly all piezo-resis-

tive bridge sensors. Measured and corrected bridge

values are provided at the SIG™ pin, which can be

configured as an analog voltage output or as a one-

wire serial digital output.

The digital one-wire interface (OWI) can be used for

a simple PC-controlled calibration procedure to

program a set of calibration coefficients into an on-

chip EEPROM. The calibrated RBic

dLite

™ and a

specific sensor are mated digitally: fast, precise, and

without the cost overhead associated with trimming

by external devices or laser. Integrated diagnostics

functions make the RBic

dLite

™ particularly well-suited

for automotive applications.*

Benefits

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No external trimming components required

PC-controlled configuration and calibration via

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

Available Support

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Development Kit available

Multi-Unit Calibrator Kit available

Support for industrial mass calibration available

Quick circuit customization possible for large

production volumes

Features

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Digital compensation of sensor offset, sensitivity,

temperature drift, and non-linearity

Programmable analog gain and digital gain;

accommodates bridges with spans < 1mV/V

and high offset

Many diagnostic features on chip (e.g., EEPROM

signature, bridge connection checks, bridge short

detection, power loss detection)

Independently programmable high and low

clipping levels

24-bit customer ID field for module traceability

Internal temperature compensation reference (no

external components)

Option for external temperature compensation

with addition of single diode

Output options: rail-to-rail ratiometric analog

voltage (12-bit resolution), absolute analog

voltage, digital one-wire interface

Fast power-up to data out response; output

available 5ms after power-up

Current consumption depends on programmed

sample rate: 1mA down to 250A (typical)

Fast response time: 1ms (typical)

High voltage protection up to 30V with

external JFET

Physical Characteristics

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Wide operation temperature: –50°C to +150°C

Supply voltage 2.7 to 5.5V; with external JFET,

5.5 to 30V

Small SOP8 package

ZMD31015 Application Circuit

V

supply

+2.7 to +5.5 V

VDD

SIG™

OUT/OWI

ZMD31015

VBP

Vgate

VBN

VSS

0.1

F

Ground

* Not AEC-Q100-qualified.

© 2010 ZMD AG — Rev. 1.2

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The information furnished in this publication is subject to changes without notice.