AD636JD【PDF 3/17 页】IC TRUE RMS/DC CONV MONO 14-CDIP

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Sheet目录38

1页 2页 [3页]4页 5页 6页 7页

AD636

Data Sheet

Rev. E | Page 2 of 16

TABLE OF CONTENTS

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

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

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

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

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

Absolute Maximum Ratings ............................................................ 5

ESD Caution .................................................................................. 5

Pin Configurations and Function Descriptions ........................... 6

Typical Performance Characteristics ............................................. 7

Theory of Operation ........................................................................ 8

RMS Measurements ..................................................................... 8

The AD636 Buffer Amplifier ...................................................... 8

Frequency Response ..................................................................... 9

AC Measurement Accuracy and Crest Factor (CF) ................. 9

Applications ..................................................................................... 10

Standard Connection ................................................................. 10

Optional Trims for High Accuracy .......................................... 10

Single-Supply Connection ........................................................ 10

Choosing the Averaging Time Constant ................................. 11

A Complete AC Digital Voltmeter ........................................... 12

A Low Power, High Input, Impedance dB Meter ....................... 12

Circuit Description ................................................................ 12

Performance Data .................................................................. 12

Frequency Response ? dBm ............................................... 13

Calibration .............................................................................. 13

Outline Dimensions ....................................................................... 14

Ordering Guide .......................................................................... 14

REVISION HISTORY

5/13Rev. D to Rev. E

Reorganized Layout ............................................................ Universal

Changes to Figure 1 ........................................................................... 1

Change to Table 1 .............................................................................. 4

Added Typical Performance Characteristics Section ................... 7

Added Theory of Operation Section; Changes to Figure 7 and

Figure 8 ............................................................................................... 8

Changed Applying the AD636 Section to Applications Section;

Changes to Figure 9, Figure 10, and Single-Supply Connection

Section ............................................................................................... 10

Changes to Figure 11 ....................................................................... 11

Changes to Figure 13 and A Complete AC Digital Voltmeter

Section ............................................................................................... 12

Changes to Figure 17 and Figure 18 .............................................. 13

Changes to Ordering Guide ........................................................... 14

11/06Rev. C to Rev. D

Changes to General Description ..................................................... 1

Changes to Table 1 ............................................................................. 3

Changes to Ordering Guide .......................................................... 13

1/06Rev B to Rev. C

Updated Format .................................................................. Universal

Changes to Figure 1 and General Description .............................. 1

Deleted Metallization Photograph .................................................. 3

Added Pin Configuration and Function Description Section .... 6

Updated Outline Dimensions ....................................................... 14

Changes to Ordering Guide .......................................................... 14

8/99Rev A to Rev. B

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