AD637

Data Sheet

TABLE OF CONTENTS

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

Functional Block Diagram .............................................................. 1

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

Revision History ............................................................................... 3

Specifications..................................................................................... 4

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

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

Pin Configurations and Function Descriptions ......................... 11

Theory of Operation ...................................................................... 12

Applications Information .............................................................. 13

Standard Connection................................................................. 13

Chip Select................................................................................... 13

Optional Trims for High Accuracy .......................................... 13

Offset Trim.............................................................................. 14

Scale Factor Trim ................................................................... 14

Choosing the Averaging Time Constant................................. 14

Frequency Response .................................................................. 16

AC Measurement Accuracy and Crest Factor........................ 17

Connection for dB Output........................................................ 17

dB Calibration............................................................................. 18

Low Frequency Measurements................................................. 19

Vector Summation ..................................................................... 19

Evaluation Board ............................................................................ 21

Outline Dimensions....................................................................... 24

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

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