EVAL-AD7944EBZ Ver la hoja de datos (PDF) - Analog Devices

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EVAL-AD7944EBZ

14-Bit, 2.5 MSPS, PulSAR 15.5 mW ADC in LFCSP

Analog Devices 

AD7944

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications....................................................................................... 1

Application Diagram........................................................................ 1

General Description ......................................................................... 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Timing Specifications .................................................................. 5

Absolute Maximum Ratings............................................................ 6

ESD Caution.................................................................................. 6

Pin Configuration and Function Descriptions............................. 7

Typical Performance Characteristics ............................................. 9

Terminology .................................................................................... 12

Theory of Operation ...................................................................... 13

Circuit Information.................................................................... 13

Converter Operation.................................................................. 13

Conversion Modes of Operation.............................................. 13

Typical Connection Diagram ................................................... 14

REVISION HISTORY

10/09—Revision 0: Initial Version

Analog Inputs ............................................................................. 15

Driver Amplifier Choice ........................................................... 15

Voltage Reference Input ............................................................ 16

Power Supply............................................................................... 16

Digital Interface .............................................................................. 17

Data Reading Options ............................................................... 18

CS Mode, 3-Wire Without Busy Indicator ............................. 19

CS Mode, 3-Wire with Busy Indicator .................................... 20

CS Mode, 4-Wire Without Busy Indicator ............................. 21

CS Mode, 4-Wire with Busy Indicator .................................... 22

Chain Mode Without Busy Indicator ...................................... 23

Chain Mode with Busy Indicator ............................................. 24

Applications Information .............................................................. 25

Layout .......................................................................................... 25

Evaluating AD7944 Performance............................................. 25

Outline Dimensions ....................................................................... 27

Ordering Guide .......................................................................... 27

Rev. 0 | Page 2 of 28

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