ADS4125IRGZR datasheet(2/74 Pages) TI1

Part #	ADS4125IRGZR

Description	Ultra Low-Power ADC

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Manufacturer	TI1 [Texas Instruments]

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ADS4122, ADS4125, ADS4142, ADS4145

SBAS520B – FEBRUARY 2011 – REVISED JANUARY 2016

www.ti.com

Product Folder Links: ADS4122 ADS4125 ADS4142 ADS4145

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Table of Contents

1

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

2

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

3

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

4

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

5

Device Comparison ............................................... 3

6

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

7

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

7.1

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

7.2

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

7.3

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

7.4

Thermal Information .................................................. 8

7.5

Electrical Characteristics: ADS412x ......................... 8

7.6

Electrical Characteristics: ADS414x ....................... 10

7.7

Electrical Characteristics: General .......................... 12

7.8

Digital Characteristics ............................................. 13

7.9

Timing Requirements: LVDS and CMOS Modes.... 14

7.10

Serial Interface Timing Characteristics ................. 15

7.11

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

7.12

Timing Characteristics at Lower Sampling

Frequencies ............................................................. 15

7.13

Typical Characteristics .......................................... 19

8

Detailed Description ............................................ 34

8.1

Overview ................................................................. 34

8.2

Functional Block Diagrams .................................... 35

8.3

Feature Description................................................. 36

8.4

Device Functional Modes........................................ 39

8.5

Programming........................................................... 45

8.6

Register Maps ......................................................... 47

9

Application and Implementation ........................ 54

9.1

Application Information............................................ 54

9.2

Typical Application .................................................. 59

10

Power Supply Recommendations ..................... 61

10.1

Sharing DRVDD and AVDD Supplies ................... 61

10.2

Using DC-DC Power Supplies .............................. 61

10.3

Power Supply Bypassing ...................................... 61

11

Layout................................................................... 61

11.1

Layout Guidelines ................................................. 61

11.2

Layout Example .................................................... 62

12

Device and Documentation Support ................. 63

12.1

Device Support...................................................... 63

12.2

Documentation Support ........................................ 65

12.3

Related Links ........................................................ 65

12.4

Community Resources.......................................... 65

12.5

Trademarks ........................................................... 65

12.6

Electrostatic Discharge Caution ............................ 65

12.7

Glossary ................................................................ 66

13

Mechanical, Packaging, and Orderable

Information ........................................................... 66

4 Revision History

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

Changes from Revision A (March 2011) to Revision B

Page

•

Added Pin Configuration and Functions section, Handling Rating table, Feature Descriptionsection, Device

Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout

section, Device and Documentation Supportsection, and Mechanical, Packaging, and Orderable Information section ...... 1

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