ADS7950, ADS7951, ADS7952, ADS7953, ADS7954, ADS7955

ADS7956, ADS7957, ADS7958, ADS7959, ADS7960, ADS7961

SLAS605B – JUNE 2008 – REVISED JULY 2015

www.ti.com

Table of Contents

8.1

Overview ................................................................. 26

1

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

8.2

Functional Block Diagram ....................................... 27

2

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

8.3

Feature Description................................................. 27

3

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

8.4

Device Functional Modes........................................ 27

4

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

8.5

Programming........................................................... 37

5

Device Comparison Table..................................... 4

9

Application and Implementation ........................ 42

6

Pin Configuration and Functions ......................... 4

9.1

Application Information............................................ 42

7

Specifications......................................................... 8

9.2

Typical Applications ................................................ 44

7.1

Absolute Maximum Ratings ...................................... 8

10

Power Supply Recommendations ..................... 47

7.2

ESD Ratings.............................................................. 8

11

Layout................................................................... 48

7.3

Recommended Operating Conditions ....................... 8

11.1

Layout Guidelines ................................................. 48

7.4

Thermal Information: TSSP ...................................... 9

11.2

Layout Example .................................................... 48

7.5

Thermal Information: VQFN ...................................... 9

12

Device and Documentation Support ................. 49

7.6

Electrical Characteristics: ADS7950/51/52/53 ........ 10

12.1

Documentation Support ........................................ 49

7.7

Electrical Characteristics, ADS7954/55/56/57 ........ 12

12.2

Related Links ........................................................ 49

7.8

Electrical Characteristics, ADS7958/59/60/61 ........ 13

12.3

Community Resources.......................................... 49

7.9

Timing Requirements .............................................. 15

12.4

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

7.10

Typical Characteristics (all ADS79xx Family

12.5

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

Devices) ................................................................... 18

12.6

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

7.11

Typical Characteristics (12-Bit Devices Only)....... 19

7.12

Typical Characteristics (12-Bit Devices Only)....... 25

13

Mechanical, Packaging, and Orderable

Information ........................................................... 50

8

Detailed Description ............................................ 26

4 Revision History

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

Changes from Revision A (April 2010) to Revision B

Page

•

Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation

section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and

Mechanical, Packaging, and Orderable Information section ................................................................................................. 1

Changes from Original (June 2008) to Revision A

Page

•

Added QFN information to Features....................................................................................................................................... 1

•

Added QFN information to Description................................................................................................................................... 1

•

Changed VEE to AGND and VCC to +VA on 38-pin TSSOP pinout ..................................................................................... 4

•

Added QFN pinout .................................................................................................................................................................. 4

•

Added QFN pinout .................................................................................................................................................................. 4

•

Added QFN pinout .................................................................................................................................................................. 4

•

Added QFN pinout .................................................................................................................................................................. 5

•

Added terminal functions for QFN packages.......................................................................................................................... 7

•

Changed ADS7950/4/8 QFN package MXO pin from 7 to 3.................................................................................................. 7

•

Changed thermal impedance for DBT package in absolute maximum ratings ...................................................................... 8

•

Changed thermal impedance for RHB package in absolute maximum ratings...................................................................... 8

•

Changed thermal impedance for RGE package in absolute maximum ratings...................................................................... 8

•

•

Added while 2Vref

≤ +VA to full-scale input span range 2 test conditions........................................................................... 10

•

Added while 2Vref

≤ +VA to Absolute input range span range 2 test conditions................................................................. 10

•

Added Total unadjusted error (TUE) specification ............................................................................................................... 10

•

Changed reference voltage at REFP min and max values .................................................................................................. 11

2

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