ADA4941-1

Rev. C | Page 2 of 24

TABLE OF CONTENTS

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

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

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

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

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

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

Absolute Maximum Ratings............................................................ 6

Thermal Resistance ...................................................................... 6

ESD Caution.................................................................................. 6

Pin Configuration and Function Descriptions............................. 7

Typical Performance Characteristics ............................................. 8

Theory of Operation ...................................................................... 15

Basic Operation .......................................................................... 15

DC Error Calculations............................................................... 16

Output Voltage Noise................................................................. 17

Frequency Response vs. Closed-Loop Gain ........................... 19

Applications..................................................................................... 20

Overview ..................................................................................... 20

Using the REF Pin ...................................................................... 20

Internal Feedback Network Power Dissipation...................... 20

Disable Feature ........................................................................... 20

Adding a 3-Pole, Sallen-Key Filter........................................... 21

Driving the AD7687 ADC ........................................................ 22

Gain of −2 Configuration.......................................................... 22

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

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

REVISION HISTORY

8/11—Rev. B to Rev. C

Change to Gain Error Drift Unit, Table 1...................................... 3

Change to Gain Error Drift Unit, Table 2...................................... 4

Change to Gain Error Drift Unit, Table 3...................................... 5

8/10—Rev. A to Rev. B

Added Caption to Figure 1.............................................................. 1

Added Exposed Pad Notation to Figure 4 and Table 6................ 7

Added Exposed Pad Notation to Outline Dimensions ............. 23

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

3/09—Rev. 0 to Rev. A

Change to Gain Error Drift Parameter, Table 1............................ 3

Change to Gain Error Drift Parameter, Table 2............................ 4

Change to Gain Error Drift Parameter, Table 3............................ 5

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

4/06—Revision 0: Initial Version