2

ADS8881

SBAS547D – MAY 2013 – REVISED AUGUST 2015

www.ti.com

Product Folder Links: ADS8881

Submit Documentation Feedback

Copyright © 2013–2015, Texas Instruments Incorporated

Table of Contents

1

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

2

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

3

Description ............................................................. 1

4

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

5

Companion Products............................................. 4

6

Device Comparison ............................................... 5

7

Pin Configurations and Functions ....................... 6

8

Specifications......................................................... 7

8.1

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

8.2

ESD Ratings.............................................................. 7

8.3

Recommended Operating Conditions ....................... 7

8.4

Thermal Information .................................................. 7

8.5

Electrical Characteristics........................................... 8

8.6

Timing Requirements: 3-Wire Operation ................ 10

8.7

Timing Requirements: 4-Wire Operation ................ 11

8.8

Timing Requirements: Daisy-Chain ........................ 12

8.9

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

9

Parametric Measurement Information ............... 20

9.1

Equivalent Circuits .................................................. 20

10

Detailed Description ........................................... 21

10.1

Overview ............................................................... 21

10.2

Functional Block Diagram ..................................... 21

10.3

Feature Description............................................... 21

10.4

Device Functional Modes...................................... 24

11

Application and Implementation........................ 33

11.1

Application Information.......................................... 33

11.2

Typical Applications .............................................. 36

12

Power-Supply Recommendations ..................... 45

12.1

Power-Supply Decoupling..................................... 45

12.2

Power Saving ........................................................ 45

13

Layout................................................................... 47

13.1

Layout Guidelines ................................................. 47

13.2

Layout Example .................................................... 47

14

Device and Documentation Support ................. 48

14.1

Device Support...................................................... 48

14.2

Documentation Support ........................................ 48

14.3

Receiving Notification of Documentation Updates 48

14.4

Community Resources.......................................... 48

14.5

Trademarks ........................................................... 49

14.6

Electrostatic Discharge Caution ............................ 49

14.7

Glossary ................................................................ 49

15

Mechanical, Packaging, and Orderable

Information ........................................................... 49

4 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision C (July 2014) to Revision D

Page

•

Added Companion Products and Device Comparison sections............................................................................................. 4

•

Changed ESD Ratings table to current standards, added HBM and CDM data ................................................................... 7

•

Added timing specifications for different operating temperature ranges for the tconv, td-CK-DO, and tquiet parameters in

the Timing Requirements: 3-Wire Operation table .............................................................................................................. 10

•

Added timing specifications for different operating temperature ranges for the tconv parameter in Timing

Requirements: 4-Wire Operation table ................................................................................................................................. 11

•

Added timing specifications for different operating temperature ranges for the tconv parameter in Timing

Requirements: Daisy-Chain table ........................................................................................................................................ 12