ADA4941-1

Data Sheet

Rev. D | Page 2 of 23

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

Maximum Power Dissipation................................................... 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 Information............................................................ 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

REVISIONHISTORY

5/16—Rev. C to Rev. D

Change CP-8-2 to CP-8-13........................................Throughout

Changes to Figure 4........................................................................7

Added Figure 5; Renumbered Sequentially..................................7

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

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

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—Revision0: Initial Version