AD7654

Data Sheet

Rev. D | Page 2 of 27

TABLE OF CONTENTS

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

 

Applications....................................................................................... 1

 

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

 

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

 

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

 

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

 

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

 

Timing Specifications .................................................................. 5

 

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

 

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

 

Pin Configurations and Function Descriptions ........................... 8

 

Terminology .................................................................................... 11

 

Typical Performance Characteristics ........................................... 12

 

Applications Information .............................................................. 14

 

Circuit Information.................................................................... 14

 

Modes of Operation ................................................................... 14

 

Transfer Functions...................................................................... 14

 

Typical Connection Diagram ................................................... 16

 

Analog Inputs.............................................................................. 16

 

Input Channel Multiplexer ....................................................... 16

 

Driver Amplifier Choice ........................................................... 16

 

Voltage Reference Input ............................................................ 17

 

Power Supply............................................................................... 17

 

Power Dissipation....................................................................... 17

 

Conversion Control ................................................................... 18

 

Digital Interface.......................................................................... 18

 

Parallel Interface......................................................................... 18

 

Serial Interface ............................................................................ 20

 

Master Serial Interface............................................................... 20

 

Slave Serial Interface .................................................................. 22

 

Microprocessor Interfacing....................................................... 24

 

SPI Interface (ADSP-2191M) ................................................... 24

 

Application Hints ........................................................................... 25

 

Layout .......................................................................................... 25

 

Outline Dimensions ....................................................................... 26

 

Ordering Guide .......................................................................... 27

 

REVISION HISTORY

12/15—Rev. C to Rev. D

Changes to Microprocessor Interfacing Section, SPI Interface

(ADSP-2191M) Section, and Figure 35 ....................................... 24

Updated Outline Dimensions ....................................................... 26

Changes to Ordering Guide .......................................................... 27

10/14—Rev. B to Rev. C

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

Added Figure 5; Renumbered Sequentially .................................. 8

Changes to Table 6.......................................................................... 10

Changes to Voltage Reference Input Section and Power Supply

Section.............................................................................................. 17

Deleted the Evaluating the AD7654 Performance Section ....... 25

Updated Outline Dimensions ....................................................... 26

Changes to Ordering Guide .......................................................... 27

11/05—Rev. A to Rev. B

Changes to General Description .....................................................1

Changes to Timing Specifications...................................................5

Changes to Figure 16...................................................................... 13

Changes to Figure 18...................................................................... 15

Added Table 8 ................................................................................. 17

Changes to Figure 24...................................................................... 19

Changes to Figure 29...................................................................... 21

Updated Outline Dimensions....................................................... 26

Changes to Ordering Guide .......................................................... 26

11/04—Rev. 0 to Rev. A

Changes to Figure 7........................................................................ 12

Changes to Figure 18...................................................................... 15

Changes to Figure 19...................................................................... 16

Changes to Voltage Reference Input Section .............................. 17

Changes to Conversion Control Section..................................... 18

Changes to Digital Interface Section ........................................... 18

Updated Outline Dimensions...................................................... 25

11/02—Revision 0: Initial Version