AD8428

Data Sheet

Rev. A | Page 2 of 20

TABLE OF CONTENTS

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

 

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

 

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

 

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

 

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

 

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

 

Absolute Maximum Ratings............................................................ 5

 

Thermal Resistance ...................................................................... 5

 

ESD Caution.................................................................................. 5

 

Pin Configuration and Function Descriptions............................. 6

 

Typical Performance Characteristics ............................................. 7

 

Theory of Operation ...................................................................... 13

 

Architecture................................................................................. 13

 

Filter Terminals........................................................................... 13

 

Reference Terminal .................................................................... 13

 

Input Voltage Range................................................................... 14

 

Layout .......................................................................................... 14

 

Input Bias Current Return Path ............................................... 15

 

Input Protection ......................................................................... 15

 

Radio Frequency Interference (RFI)........................................ 16

 

Calculating the Noise of the Input Stage................................. 16

 

Applications Information .............................................................. 18

 

Effect of Passive Network Across the Filter Terminals.......... 18

 

Circuits Using the Filter Terminals.......................................... 18

 

Outline Dimensions ....................................................................... 20

 

Ordering Guide .......................................................................... 20

 

REVISION HISTORY

4/12—Rev. 0 to Rev. A

Changes to Features Section and Table 1 ...................................... 1

Added B Grade Column to Table 2 ................................................ 3

Changes to Figure 3, Figure 4, Figure 5, Figure 6, Figure 7,

and Figure 8....................................................................................... 7

Changes to Filter Terminals Section ............................................ 13

Added Applications Information Section ................................... 18

Changes to Ordering Guide .......................................................... 20

10/11—Revision 0: Initial Version