AD736ARZ-R7 Просмотр технического описания (PDF) - Analog Devices

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AD736ARZ-R7

Low Cost, Low Power, True RMS-to-DC Converter

Analog Devices 

AD736

TABLE OF CONTENTS

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

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

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

Product Highlights ........................................................................... 1

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

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

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

Thermal Resistance ...................................................................... 5

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

Pin Configuration and Function Descriptions............................. 6

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

Theory of Operation ...................................................................... 10

Types of AC Measurement ........................................................ 10

Calculating Settling Time Using Figure 16 ............................. 11

REVISION HISTORY

12/12—Rev. H to Rev. I

Changes to Features and Figure 1.................................................. 1

Change to Error vs. Crest Factor Parameter, Table 1 .................. 3

Changes to Operating Voltage Range Parameter, Table 1.......... 4

Changes to Table 2........................................................................... 5

Added Table 3; Renumbered Sequentially ................................... 5

Changes to Figure 9 ......................................................................... 8

Changes to Figure 16....................................................................... 9

Changes to Figure 18..................................................................... 10

Added Additional Application Concepts Section and

Changes to Figure 25..................................................................... 15

Changes to Figure 29..................................................................... 17

Deleted Table 6............................................................................... 17

Changes to Ordering Guide ......................................................... 20

2/07—Rev. G to Rev. H

Updated Layout.......................................................................9 to 12

Added Applications Section ......................................................... 13

Inserted Figure 21 to Figure 24; Renumbered Sequentially..... 13

Deleted Figure 25........................................................................... 15

Added Evaluation Board Section................................................. 16

Inserted Figure 29 to Figure 34; Renumbered Sequentially..... 16

Inserted Figure 35; Renumbered Sequentially........................... 17

Added Table 6................................................................................. 17

2/06—Rev. F to Rev. G

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

Data Sheet

RMS Measurement—Choosing the Optimum Value for CAV.... 11

Rapid Settling Times via the Average Responding

Connection.................................................................................. 12

DC Error, Output Ripple, and Averaging Error ..................... 12

AC Measurement Accuracy and Crest Factor............................ 12

Applications..................................................................................... 13

Connecting the Input................................................................. 13

Selecting Practical Values for Input Coupling (CC),

Averaging (CAV), and Filtering (CF) Capacitors...................... 14

Additional Application Concepts............................................. 15

Evaluation Board ............................................................................ 17

Outline Dimensions ....................................................................... 19

Ordering Guide .......................................................................... 20

Changes to Features .........................................................................1

Added Table 3 ...................................................................................6

Changes to Figure 21 and Figure 22 ........................................... 14

Changes to Figure 23, Figure 24, and Figure 25 ........................ 15

Updated Outline Dimensions ...................................................... 16

Changes to Ordering Guide ......................................................... 17

5/04—Rev. E to Rev. F

Changes to Specifications................................................................2

Replaced Figure 18 ........................................................................ 10

Updated Outline Dimensions ...................................................... 16

Changes to Ordering Guide ......................................................... 16

4/03—Rev. D to Rev. E

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

Changes to Specifications.............................................................3

Changes to Absolute Maximum Ratings....................................4

Changes to Ordering Guide .........................................................4

11/02—Rev. C to Rev. D

Changes to Functional Block Diagram.......................................1

Changes to Pin Configuration .....................................................3

Figure 1 Replaced ..........................................................................6

Changes to Figure 2.......................................................................6

Changes to Application Circuits Figures 4 to 8.........................8

Outline Dimensions Updated......................................................8

Rev. I | Page 2 of 20

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