ADA4950-1/ADA4950-2

Rev. 0 | Page 2 of 2

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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

5/09—Revision 0: Initial Version