AD7999 View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

AD7999

4-Channel, 12-/10-/8-Bit ADC with I2C-Compatible Interface in 8-Lead SOT-23

Analog Devices 

AD7991/AD7995/AD7999

TABLE OF CONTENTS

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

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

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

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

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

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

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

AD7991 .......................................................................................... 3

AD7995 .......................................................................................... 5

AD7999 .......................................................................................... 7

I2C Timing Specifications............................................................ 9

Absolute Maximum Ratings.......................................................... 11

ESD Caution................................................................................ 11

Pin Configuration and Function Descriptions........................... 12

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

Terminology .................................................................................... 16

Theory of Operation ...................................................................... 17

REVISION HISTORY

10/09—Rev. 0 to Rev. A

Changes to Table 3............................................................................ 5

Changes to Table 4............................................................................ 7

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

12/07—Revision 0: Initial Version

Converter Operation.................................................................. 17

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

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

Internal Register Structure ............................................................ 20

Configuration Register .............................................................. 20

Sample Delay and Bit Trial Delay............................................. 21

Conversion Result Register ....................................................... 21

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

Serial Bus Address ...................................................................... 22

Writing to the AD7991/AD7995/AD7999 .................................. 23

Reading from the AD7991/AD7995/AD7999 ............................ 24

Placing the AD7991/AD7995/AD7999 into High

Speed Mode................................................................................. 25

Mode of Operation......................................................................... 26

Outline Dimensions ....................................................................... 27

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

Rev. A | Page 2 of 28

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