AD7713 datasheet(27/28 Pages) AD

27 / 28 page

–27–

REV. C

AD7713

AD7712

FEATURES

Charge Balancing ADC

24 Bits No Missing Codes

0.0015% Nonlinearity

High Level and Low Level Analog Input Channels

Programmable Gain for Both Inputs

Gains from 1 to 128

Differential Input for Low Level Channel

Low-Pass Filter with Programmable Filter Cutoffs

Ability to Read/Write Calibration Coefficients

Bidirectional Microcontroller Serial Interface

Internal/External Reference Option

Single or Dual Supply Operation

Low Power (25 mW typ) with Power-Down Mode

(100

W typ}

APPLICATIONS

Process Control

Smart Transmitters

Portable Industrial Instruments

FUNCTIONAL BLOCK DIAGRAM

CLOCK

GENERATION

SERIAL INTERFACE

CONTROL

OUTPUT

CHARGING BALANCING A/D

CONVERTER

AUTO-ZEROED

∑ − ∆

MODULATOR

DIGITAL

FILTER

AD7712

AGND DGND

MODE SDATA SCLK

MCLK

OUT

MCLK

AIN1(+)

AIN1(–)

REF

IN(–)

REF

IN(+)

AVDD DVDD

AVDD

4.5µA

A = 1 – 128

VSS

VBIAS

REF OUT

SYNC

DRDY

TFS

RFS

AIN2

2.5V REFERENCE

PGA

VOLTAGE

ATTENUATION

STANDBY

AD7713 Datasheet(PDF) 27 Page - Analog Devices

AD7713 Datasheet(HTML) 27 Page - Analog Devices

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