ADA4950-1/ADA4950-2

Data Sheet

Rev. B | Page 2 of 26

TABLE OF CONTENTS

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

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

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

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

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

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

±5 V Operation............................................................................. 3

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

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..................................................................................... 16

Terminology .................................................................................... 17

Theory of Operation ...................................................................... 18

Applications Information .............................................................. 19

Analyzing an Application Circuit ............................................ 19

Selecting the Closed-Loop Gain............................................... 19

Estimating the Output Noise Voltage...................................... 19

Calculating the Input Impedance for an Application

Circuit .......................................................................................... 20

Input Common-Mode Voltage Range..................................... 22

Input and Output Capacitive AC Coupling............................ 22

Input Signal Swing Considerations.......................................... 22

Setting the Output Common-Mode Voltage.......................... 22

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

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

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

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

REVISION HISTORY

10/15—Rev. A to Rev. B

Changed CP-16-2 to CP-16-21 .........................................Universal

Changes to Figure 1.......................................................................... 1

Changes to Figure 5.......................................................................... 8

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

Changes to Ordering Guide .......................................................... 25

3/13—Rev. 0 to Rev. A

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

Changes to Ordering Guide .......................................................... 25

5/09—Revision 0: Initial Version