AD7904/AD7914/AD7924

Data Sheet

Rev. C | Page 2 of 32

TABLE OF CONTENTS

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

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

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

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

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

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

AD7904 Specifications................................................................. 3

AD7914 Specifications................................................................. 5

AD7924 Specifications................................................................. 7

Timing Specifications .................................................................. 9

Absolute Maximum Ratings.......................................................... 10

ESD Caution................................................................................ 10

Pin Configuration and Function Descriptions........................... 11

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

Terminology .................................................................................... 14

Control Register.............................................................................. 15

Sequencer Operation ................................................................. 16

Circuit Information........................................................................ 18

Converter Operation.................................................................. 18

ADC Transfer Function............................................................. 19

Typical Connection Diagram ................................................... 20

Modes of Operation ....................................................................... 22

Normal Mode (PM1 = PM0 = 1) ............................................. 22

Full Shutdown Mode (PM1 = 1, PM0 = 0) ............................. 22

Auto Shutdown Mode (PM1 = 0, PM0 = 1) ........................... 22

Powering Up the AD7904/AD7914/AD7924......................... 23

Power vs. Throughput Rate........................................................... 25

Serial Interface ............................................................................ 25

Applications Information .............................................................. 27

Microprocessor Interfacing....................................................... 27

Grounding and Layout .............................................................. 28

Outline Dimensions....................................................................... 29

Ordering Guide .......................................................................... 29

Automotive Products................................................................. 29

REVISION HISTORY

6/13—Rev. B to Rev. C

Deleted Evaluating AD7904/AD7914/AD7924 Performance

Section.............................................................................................. 29

Changes to Ordering Guide .......................................................... 29

7/11—Rev. A to Rev. B

Changes to Features Section............................................................ 1

Changes to Signal to (Noise + Distortion) (SINAD) Parameter

and Signal-to-Noise Ratio (SNR) Parameter in Table 1 .............. 3

Changes to Signal to (Noise + Distortion) (SINAD) Parameter

and Signal-to-Noise Ratio (SNR) Parameter in Table 2 .............. 5

Changes to Signal to (Noise + Distortion) (SINAD) Parameter

and Signal-to-Noise Ratio (SNR) Parameter in Table 3 .............. 7

Changes to Table 5.......................................................................... 10

Changes to Ordering Guide .......................................................... 30

Added Automotive Products Section........................................... 30

2/09—Rev. 0 to Rev. A

Updated Format..................................................................Universal

Moved Figure 2 ..................................................................................9

Change to Table 5 ........................................................................... 10

Changes to Typical Performance Characteristics Section ........ 12

Moved Terminology Section......................................................... 14

Updated Outline Dimensions....................................................... 30

Changes to Ordering Guide.......................................................... 30

11/02—Revision 0: Initial Version