AD630

Data Sheet

Rev. G | Page 2 of 20

TABLE OF CONTENTS

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

 

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

 

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

 

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

 

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

 

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

 

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

 

Absolute Maximum Ratings............................................................ 4

 

Thermal Resistance ...................................................................... 4

 

Chip Availability ........................................................................... 4

 

ESD Caution.................................................................................. 4

 

Pin Configurations and Function Descriptions ........................... 5

 

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

 

Test Circuits..................................................................................... 11

 

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

 

Two Ways To Look At The AD630 .......................................... 12

 

How the AD630 Works.............................................................. 12

 

Circuit Description .................................................................... 13

 

Other Gain Configurations....................................................... 14

 

Switched Input Impedance ....................................................... 14

 

Frequency Compensation ......................................................... 14

 

Offset Voltage Nulling ............................................................... 15

 

Channel Status Output .............................................................. 15

 

Applications Information .............................................................. 16

 

Balanced Modulator................................................................... 16

 

Balanced Demodulator.............................................................. 16

 

Precision Phase Comparator .................................................... 16

 

Precision Rectifier Absolute Value........................................... 16

 

LVDT Signal Conditioner ......................................................... 17

 

AC Bridge .................................................................................... 17

 

Lock-In Amplifier Applications ............................................... 18

 

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

 

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

 

REVISION HISTORY

12/2016—Rev. F to Rev. G

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

Changes to Figure 31...................................................................... 17

Changes to Figure 35...................................................................... 18

7/2015—Rev. E to Rev. F

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

Changes to Features Section, General Description Section,

Product Highlights Section, and Figure 1 ..................................... 1

Added Applications Section............................................................ 1

Changes to Table 3............................................................................ 4

Added Table 4; Renumbered Sequentially .................................... 5

Added Figure 4; Renumbered Sequentially and Table 5 ............. 6

Added Figure 5 and Table 6............................................................. 7

Added Table 7.................................................................................... 8

Changes to Figure 7, Figure 8, and Figure 9 ................................. 9

Changes to Figure 13, Figure 14, and Figure 15 ......................... 10

Added Test Circuits Section and Figure 16 to Figure 19........... 11

Added Theory of Operation Section ........................................... 12

Change to Figure 24 ....................................................................... 13

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

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

6/2004—Rev. D to Rev. E

Changes to Ordering Guide .............................................................3

Replaced Figure 12 ............................................................................9

Changes to AC Bridge Section.........................................................9

Replaced Figure 13 ......................................................................... 10

Changes to Lock-In Amplifier Applications............................... 10

Updated Outline Dimensions....................................................... 11

6/2001—Rev. C to Rev. D

Changes to Specification Table ........................................................2

Changes to Thermal Characteristics...............................................3

Changes to Ordering Guide .............................................................3

Changes to Pin Configurations .......................................................3

Changes to Outline Dimensions .................................................. 11