ZMD31012BECS datasheet, PDF - EEWORLD Datasheet

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ZMD31012BECS: DescriptionTwo low-cost sensor signal conditioners ZMD31010 chips in one package; File Size710KB，2 Pages; ManufacturerZMD; Websitehttp://www.zmd.de/

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ZMD31012BECS Overview

Two low-cost sensor signal conditioners ZMD31010 chips in one package

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The

Analog

Mixed Signal Company

ZMD31012

RBic

Lite

™

Two Low-cost Sensor Signal Conditioners

ZMD31010 Chips in One Package

P R E L I M I N A RY

Features two ZMD31010

• Separate digital compensation of sensor offset, sensitivity,

temperature coefficient and non-linearity

• Accommodates differential sensor signal spans from 1.2mV/V

to 60mV/V for two inputs

• Dual ZACwire

one-wire interface

• Internal temperature compensation reference

via bandgap PTAT*

• Optional sequential output of both temperature and bridge

readings two ZACwire

digital output

• Output options: ratiometric analog voltage, absolute analog

voltage, digital one-wire-interface

• Supply voltage 2.7V to 5.5V, with external JFET 5.5V to 30V

• Current consumption 2mA

• Operation temperature -50°C to +150°C

• Fast response time: 1ms

• High voltage protection up to 30V with external JFET

• Chopper stabilized true differential ADC

• Buffered and chopper stabilize output DAC

*Proportional to absolute temperature

Benefits

The ZMD31012 combines the benefits of two single ZMD31010.

• No external trimming components required

• PC-controlled configuration and calibration via one-wire interface

– simple, low cost

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

±0.25% FSO @ -40°C to 125°C)

• Single pass calibration – quick and precise

Due to the two independent channels the ZMD31012 provides

a perfect fit for the following selected samples:

• Applications that require redundancy

• Measurement of differential pressure

• Flow Sensors

Brief Description

The ZMD31012 consists of two ZMD31010 dies in a standard

SSOP14 packages. ZMD31012 is a CMOS integrated circuit, which

enables easy and precise 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 compensa-

tion can be enabled for temperature coefficients of gain or offset

or bridge linearity. ZMD31012 communicates via ZMD’s ZACwire

serial interface to the host computer and is easily mass calibrated in

a Windows

environment.

Once calibrated, the output SIG

pin can provide selectable 0V to

1V, rail-to-rail ratiometric analog output, or digital serial output of

bridge data with optional temperature data.

• ZMD31010 Development Kit can be used

• Support for industrial mass calibration will be available

• Quick circuit customization possible for large production volumes

Application Circuit

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