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AD7321
TABLE OF CONTENTS
Features..............................................................................................1
Rev. 0 | Page 2 of 36
Functional Block Diagram..............................................................1
General Description.........................................................................1
Product Highlights...........................................................................1
Revision History...............................................................................2
Specifications.....................................................................................3
Timing Specifications ..................................................................7
Absolute Maximum Ratings............................................................8
ESD Caution..................................................................................8
Pin Configuration and Function Descriptions.............................9
Typical Performance Characteristics...........................................10
Terminology....................................................................................14
Theory of Operation......................................................................16
Circuit Information....................................................................16
Converter Operation..................................................................16
Analog Input Structure..............................................................17
Typical Connection Diagram ...................................................19
Analog Input...............................................................................19
Driver Amplifier Choice............................................................21
Registers...........................................................................................22
Addressing Registers.................................................................. 22
Control Register ......................................................................... 23
Range Register............................................................................ 25
Sequencer Operation..................................................................... 26
Reference..................................................................................... 27
V
DRIVE
............................................................................................ 27
Modes of Operation....................................................................... 28
Normal Mode.............................................................................. 28
Full Shutdown Mode.................................................................. 28
Auto Shutdown Mode................................................................ 29
Autostandby Mode..................................................................... 29
Power vs. Throughput Rate....................................................... 30
Serial Interface................................................................................ 31
Microprocessor Interfacing........................................................... 32
AD7321 to ADSP-21xx.............................................................. 32
AD7321 to ADSP-BF53x........................................................... 32
Application Hints ........................................................................... 33
Layout and Grounding.............................................................. 33
Outline Dimensions....................................................................... 34
Ordering Guide .......................................................................... 34
REVISION HISTORY
1/06—Revision 0: Initial Version
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