AD8555

Data Sheet

TABLE OF CONTENTS

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

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

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

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

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

Electrical Specifications ................................................................... 3

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

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

Pin Configurations and Function Descriptions ........................... 8

Typical Performance Characteristics ........................................... 10

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

Gain Values.................................................................................. 19

Open Wire Fault Detection....................................................... 20

Shorted Wire Fault Detection................................................... 20

Floating VPOS, VNEG, or VCLAMP Fault Detection ......... 20

Device Programming................................................................. 20

Filtering Function....................................................................... 26

Driving Capacitive Loads.......................................................... 26

RF Interference ........................................................................... 27

Single-Supply Data Acquisition System .................................. 27

Using the AD8555 with Capacitive Sensors ........................... 28

Outline Dimensions....................................................................... 29

Ordering Guide .......................................................................... 29

REVISION HISTORY

2/15—Rev. A to Rev. B

Changes to Applications Section .................................................... 1

Changes to Table 5............................................................................ 8

Changes to Figure 3.......................................................................... 9

Added Table 6; Renumbered Sequentially .................................... 9

Changes to Figure 64...................................................................... 29

Updated Outline Dimensions....................................................... 29

Changes to Ordering Guide .......................................................... 29

6/09—Rev. 0 to Rev A

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

Changes to Figure 3 and Table 5..................................................... 8

Updated Outline Dimensions....................................................... 28

Changes to Ordering Guide .......................................................... 28

4/04—Revision 0: Initial Version

Rev. B | Page 2 of 29