AD7908/AD7918/AD7928

Data Sheet

Rev. E | Page 2 of 28

TABLE OF CONTENTS

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

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

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

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

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

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

AD7908 Specifications ................................................................. 3

AD7918 Specifications ................................................................. 5

AD7928 Specifications ................................................................. 7

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

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

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

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

Terminology .................................................................................... 12

Typical Performance Characteristics ........................................... 13

Performance Curves................................................................... 13

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

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

SHADOW Register .................................................................... 17

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

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

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

Handling Bipolar Input Signals ................................................ 19

Typical Connection Diagram ................................................... 19

Modes of Operation................................................................... 21

Power vs. Throughput Rate....................................................... 23

Serial Interface ............................................................................ 23

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

Application Hints ....................................................................... 27

Outline Dimensions....................................................................... 28

Ordering Guide .......................................................................... 28

Automotive Products................................................................. 28

REVISION HISTORY

1/14—Rev. D to Rev. E

Changes to Ordering Guide .......................................................... 28

12/10—Rev. C to Rev. D

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

Added Automotive SINAD and SNR Parameters (Table 1)........ 3

Added Automotive SINAD and SNR Parameters (Table 2)........ 5

Added Automotive SINAD and SNR Parameters (Table 3)........ 7

Added Automotive Temperature Range (Table 5) ....................... 7

Added Automotive Products Section........................................... 28

Changes to Ordering Guide .......................................................... 28

11/08—Rev. B to Rev. C

Changes to ESD Parameter, Table 5............................................. 10

6/06—Rev. A to Rev. B

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

Changes to Reference Section....................................................... 21

9/03—Rev. 0 to Rev. A

Changes to Figure 3........................................................................ 15

Changes to Reference section ....................................................... 18