AD8132

Rev. I | Page 2 of 32

TABLE OF CONTENTS

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

 

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

 

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

 

Connection Diagram ....................................................................... 1

 

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

 

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

 

±DIN to ±OUT Specifications...................................................... 4

 

VOCM to ±OUT Specifications ..................................................... 5

 

±DIN to ±OUT Specifications...................................................... 6

 

VOCM to ±OUT Specifications ..................................................... 7

 

±DIN to ±OUT Specifications...................................................... 8

 

VOCM to ±OUT Specifications ..................................................... 8

 

Absolute Maximum Ratings............................................................ 9

 

Thermal Resistance ...................................................................... 9

 

Maximum Power Dissipation ..................................................... 9

 

ESD Caution.................................................................................. 9

 

Pin Configuration and Function Descriptions........................... 10

 

Typical Performance Characteristics ........................................... 11

 

Test Circuits..................................................................................... 20

 

Operational Description................................................................ 21

 

Definition of Terms.................................................................... 21

 

Basic Circuit Operation ............................................................. 21

 

Theory of Operation ...................................................................... 22

 

General Usage of the AD8132 .................................................. 22

 

Differential Amplifier Without Resistors (High Input

Impedance Inverting Amplifier) .............................................. 22

 

Other β2 = 1 Circuits ................................................................. 23

 

Varying β2 ................................................................................... 23

 

β1 = 0............................................................................................ 23

 

Estimating the Output Noise Voltage ...................................... 23

 

Calculating Input Impedance of the Application Circuit ..... 24

 

Input Common-Mode Voltage Range in Single-Supply

Applications ................................................................................ 24

 

Setting the Output Common-Mode Voltage .......................... 24

 

Driving a Capacitive Load......................................................... 24

 

Open-Loop Gain and Phase ..................................................... 24

 

Layout, Grounding, and Bypassing.............................................. 25

 

Circuits......................................................................................... 25

 

Applications Information .............................................................. 26

 

Analog-to-Digital Driver .......................................................... 26

 

Balanced Cable Driver............................................................... 26

 

Transmit Equalizer ..................................................................... 27

 

Low-Pass Differential Filter ...................................................... 27

 

High Common-Mode Output Impedance Amplifier ........... 28

 

Full-Wave Rectifier .................................................................... 29

 

Automotive Products ................................................................. 29

 

Outline Dimensions ....................................................................... 30

 

Ordering Guide .......................................................................... 30