
AD7327
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
Sequence Register....................................................................... 25
Range Registers........................................................................... 25
Sequencer Operation..................................................................... 26
Reference..................................................................................... 28
V
DRIVE
............................................................................................ 28
Temperature Indicator............................................................... 28
Modes of Operation....................................................................... 29
Normal Mode.............................................................................. 29
Full Shutdown Mode.................................................................. 29
Autoshutdown Mode................................................................. 30
Autostandby Mode..................................................................... 30
Power vs. Throughput Rate....................................................... 31
Serial Interface................................................................................ 32
Microprocessor Interfacing........................................................... 33
AD7327 to ADSP-21xx.............................................................. 33
AD7327 to ADSP-BF53x........................................................... 33
Application Hints ........................................................................... 34
Layout and Grounding.............................................................. 34
Outline Dimensions....................................................................... 35
Ordering Guide .......................................................................... 35
REVISION HISTORY
1/06—Revision 0: Initial Version