AD7843

Rev. B | Page 2 of 20

TABLE OF CONTENTS

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

Timing Specifications .................................................................. 4

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

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

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

Terminology ...................................................................................... 7

Typical Performance Characteristics ............................................. 8

Circuit Information ........................................................................ 11

ADC Transfer Function............................................................. 11

Typical Connection Diagram ................................................... 11

Analog Input ............................................................................... 12

Control Register ......................................................................... 14

Power vs. Throughput Rate....................................................... 15

Serial Interface ............................................................................ 16

Detailed Serial Interface Timing .............................................. 17

Pen Interrupt Request................................................................ 19

Grounding and Layout .............................................................. 19

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

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

REVISION HISTORY

3/04—Data Sheet Changed from Rev. A to Rev. B

Updated Format..................................................................Universal

Changes to Absolute Maximum Ratings ....................................... 5

Addition to the PD0 and PD1 Section......................................... 14

Additions to Ordering Guide........................................................ 20

3/03—Data Sheet Changed from Rev. 0 to Rev. A

Updated Outline Dimensions ....................................................... 16