ADA4930-1/ADA4930-2

Rev. A | Page 2 of 28

TABLE OF CONTENTS

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

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

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

Functional Block Diagrams............................................................. 1

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

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

3.3 V Operation ............................................................................ 3

3.3 V VOCM to VO, cm Performance ............................................... 4

3.3 V General Performance......................................................... 4

5 V Operation ............................................................................... 5

5 V VOCM to VO, cm Performance .................................................. 6

5 V General Performance............................................................ 6

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

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

Maximum Power Dissipation ..................................................... 7

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

Pin Configurations 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

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

Input Common-Mode Voltage Range ..................................... 18

Minimum RG Value .................................................................... 19

Setting the Output Common-Mode Voltage .......................... 19

Calculating the Input Impedance for an Application Circuit

....................................................................................................... 19

Layout, Grounding, and Bypassing.............................................. 23

High Performance ADC Driving ................................................. 24

Outline Dimensions ....................................................................... 25

Ordering Guide .......................................................................... 25

REVISION HISTORY

10/10—Rev. 0 to Rev. A

Changes to General Description .................................................... 1

10/10—Revision 0: Initial Version