ADS4449

SBAS603A – APRIL 2013 – REVISED JANUARY 2016

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Table of Contents

8.2

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

1

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

8.3

Feature Description................................................. 22

2

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

8.4

Device Functional Modes........................................ 23

3

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

8.5

Programming .......................................................... 26

4

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

8.6

Register Maps ........................................................ 28

5

Pin Configuration and Functions ......................... 3

9

Application and Implementation ........................ 41

6

Specifications......................................................... 5

9.1

Application Information............................................ 41

6.1

Absolute Maximum Ratings ...................................... 5

9.2

Typical Application .................................................. 41

6.2

ESD Ratings.............................................................. 5

10

Power Supply Recommendations ..................... 48

6.3

Recommended Operating Conditions ....................... 5

11

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

6.4

Thermal Information .................................................. 6

11.1

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

6.5

Electrical Characteristics........................................... 7

11.2

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

6.6

Digital Characteristics ............................................... 9

12

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

6.7

Timing Requirements .............................................. 10

12.1

Device Nomenclature............................................ 49

6.8

Timing Characteristics For Figure 1........................ 10

12.2

Documentation Support ........................................ 50

6.9

Typical Characteristics ............................................ 12

12.3

Community Resources.......................................... 50

6.10

Typical Characteristics: Contour ........................... 18

12.4

Trademarks ........................................................... 50

7

Parameter Measurement Information ................ 19

12.5

Electrostatic Discharge Caution ............................ 50

7.1

LVDS Output Timing ............................................... 19

12.6

Glossary ................................................................ 50

8

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

13

Mechanical, Packaging, and Orderable

8.1

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

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

4 Revision History

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

Changes from Original (April 2013) to Revision A

Page

•

Added Internal Dither Features bullet .................................................................................................................................... 1

•

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

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

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

•

Deleted Package and Ordering Information because the data is repeated in the Package Option Addendum ................... 1

•

Deleted SNRB from the configuration registers block in the functional block diagram ......................................................... 1

•

Changed Clock Inputs, Input clock sample rate parameter minimum specification in Recommended Operating

Conditions table ...................................................................................................................................................................... 5

•

Changed Table 2 ................................................................................................................................................................. 22

2

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