AD8138

Data Sheet

Rev. G | Page 2 of 24

TABLE OF CONTENTS

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

 

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

 

Pin Configuration............................................................................. 1

 

Typical Application Circuit ............................................................. 1

 

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

 

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

 

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

 

±DIN to ±OUT Specifications...................................................... 3

 

VOCM to ±OUT Specifications ..................................................... 4

 

±DIN to ±OUT Specifications...................................................... 5

 

VOCM to ±OUT Specifications ..................................................... 6

 

Absolute Maximum Ratings............................................................ 7

 

Thermal Resistance ...................................................................... 7

 

ESD Caution.................................................................................. 7

 

Pin Configuration and Function Descriptions............................. 8

 

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

 

Test Circuits..................................................................................... 15

 

Operational Description................................................................ 16

 

Definition of Terms.................................................................... 16

 

Theory of Operation ...................................................................... 17

 

Analyzing an Application Circuit ............................................ 17

 

Setting the Closed-Loop Gain .................................................. 17

 

Estimating the Output Noise Voltage ...................................... 17

 

The Impact of Mismatches in the Feedback Networks ......... 18

 

Calculating the Input Impedance of an Application ............. 18

 

Input Common-Mode Voltage Range in Single-Supply

Applications ................................................................................ 18

 

Setting the Output Common-Mode Voltage .......................... 18

 

Driving a Capacitive Load......................................................... 18

 

Layout, Grounding, and Bypassing.............................................. 19

 

Balanced Transformer Driver ....................................................... 20

 

High Performance ADC Driving ................................................. 21

 

3 V Operation ................................................................................. 22

 

Outline Dimensions ....................................................................... 23

 

Ordering Guide .......................................................................... 23

 

REVISION HISTORY

3/16—Rev. F to Rev. G

Changes to Setting the Closed-Loop Gain Section.................... 17

Changes to Figure 46...................................................................... 21

Changes to Figure 47...................................................................... 22

1/06—Rev. E to Rev. F

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

Added Thermal Resistance Section and Maximum Power

Dissipation Section........................................................................... 7

Changes to Balanced Transformer Driver Section..................... 20

Changes to Ordering Guide .......................................................... 23

3/03—Rev. D to Rev. E

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

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

Changes to TPC 16........................................................................... 6

Changes to Table I ............................................................................ 9

Added New Paragraph after Table I............................................. 10

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

7/02—Rev. C to Rev. D

Addition of TPC 35 and TPC 36 .....................................................8

6/01—Rev. B to Rev. C

Edits to Specifications ......................................................................2

Edits to Ordering Guide ...................................................................4

12/00—Rev. A to Rev. B

9/99—Rev. 0 to Rev. A

3/99—Rev. 0: Initial Version