AD7328BRUZ Ver la hoja de datos (PDF) - Analog Devices

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AD7328BRUZ

8-Channel, Software-Selectable True Bipolar Input, 12-Bit Plus Sign ADC

Analog Devices 

AD7328

TABLE OF CONTENTS

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

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

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

Product Highlights ........................................................................... 1

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

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

Timing Specifications .................................................................. 6

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

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

Pin Configuration and Function Descriptions............................. 8

Typical Performance Characteristics ............................................. 9

Terminology .................................................................................... 13

Theory of Operation ...................................................................... 15

Circuit Information.................................................................... 15

Converter Operation.................................................................. 15

Analog Input Structure.............................................................. 16

Typical Connection Diagram ................................................... 18

Analog Input ............................................................................... 18

Driver Amplifier Choice............................................................ 20

Registers ........................................................................................... 21

Addressing Registers .................................................................. 21

REVISION HISTORY

6/06—Rev. 0 to Rev. A

Changes to Table 1............................................................................ 1

Changes to Specifications ................................................................ 3

Added Thermal Hysteresis to Terminology Section.................. 14

Change to Figure 42 ....................................................................... 20

Change to Control Register Section............................................. 23

10/05—Revision 0: Initial Version

Control Register ......................................................................... 22

Sequence Register....................................................................... 24

Range Registers........................................................................... 24

Sequencer Operation ..................................................................... 25

Reference ..................................................................................... 27

VDRIVE............................................................................................ 27

Temperature Indicator............................................................... 27

Modes of Operation ....................................................................... 28

Normal Mode.............................................................................. 28

Full Shutdown Mode.................................................................. 28

Autoshutdown Mode ................................................................. 29

Autostandby Mode..................................................................... 29

Power vs. Throughput Rate....................................................... 30

Serial Interface ................................................................................ 31

Microprocessor Interfacing........................................................... 32

AD7328 to ADSP-21xx.............................................................. 32

AD7328 to ADSP-BF53x ........................................................... 32

Application Hints ........................................................................... 33

Layout and Grounding .............................................................. 33

Outline Dimensions ....................................................................... 34

Ordering Guide .......................................................................... 34

Rev. A | Page 2 of 36

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