AD7656 datasheet(2/25 Pages) AD

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AD7658/AD7657/AD7656

Preliminary Technical Data

Rev. PrI | Page 2 of 25

TABLE OF CONTENTS

AD7658 Specifications..................................................................... 3

AD7657 Specifications..................................................................... 5

AD7656 Specifications..................................................................... 7

Timing Specifications....................................................................... 9

Absolute Maximum Ratings.......................................................... 10

ESD Caution................................................................................ 10

Pin Functional Descriptions ..................................................... 11

Terminology .................................................................................... 14

converter details.......................................................................... 15

Track-and-Hold Section........................................................ 15

Analog Input Section ............................................................. 15

ADC Transfer Function............................................................. 16

interface section.......................................................................... 17

Parallel Interface (SER/PAR = 0) ......................................... 17

Software Selection of ADCs.................................................. 18

Changing the Analog Input Range(H/S SEL=0)................ 18

Changing the Analog Input Range(H/S SEL=1)................ 19

SERIAL INTERFACE (SER/PAR = 1) ................................. 19

Serial Read Operation ........................................................... 20

Daisy-Chain Mode(DCEN =1, SER/PAR = 1) ................... 20

Standby/Partial Power Down Modes of Operation........... 23

Ordering Guide .......................................................................... 25

REVISION HISTORY

Revision PrI: Preliminary Version

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