
AD7933/AD7934
Preliminary Technical Data
TABLE OF CONTENTS
AD7933—Specifications..................................................................3
AD7934—Specifications..................................................................5
Timing Specifications.......................................................................7
Absolute Maximum Ratings............................................................8
ESD Caution..................................................................................8
Pin Configuration and Function Descriptions.............................9
Terminology....................................................................................11
Typical Performance Characteristics...........................................13
Control Register..........................................................................16
Sequencer Operation.................................................................17
Circuit Information........................................................................18
Converter Operation..................................................................18
ADC Transfer Function.............................................................18
Typical Connection Diagram ...................................................19
Analog Input Structure.............................................................. 19
Analog Inputs.............................................................................. 20
Analog Input Selection.............................................................. 22
Reference Section....................................................................... 22
Parallel Interface......................................................................... 24
Power Modes of Operation....................................................... 27
Power vs. Throughput Rate....................................................... 28
Microprocessor Interfacing....................................................... 28
Application Hints ........................................................................... 30
Grounding and Layout.............................................................. 30
Evaluating the AD7933/AD7934 Performance...................... 30
Outline Dimensions....................................................................... 31
Ordering Guide .......................................................................... 31
REVISION HISTORY
8/04—Revision PrG: Preliminary Version
Rev. PrG | Page 2 of 32