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ADS5294

SLAS776E – NOVEMBER 2011 – REVISED APRIL 2018

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Copyright © 2011–2018, Texas Instruments Incorporated

Table of Contents

1

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

2

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

3

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

4

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

5

Description (continued)......................................... 5

6

Device Comparison Table..................................... 6

7

Pin Configuration and Functions ......................... 7

8

Specifications......................................................... 9

8.1

Absolute Maximum Ratings ...................................... 9

8.2

ESD Ratings.............................................................. 9

8.3

Recommended Operating Conditions ..................... 10

8.4

Thermal Information ................................................ 10

8.5

Electrical Characteristics Dynamic Performance .... 11

8.6

Digital Characteristics ............................................. 12

8.7

Timing Requirements .............................................. 13

8.8

LVDS Timing at Different Sampling Frequencies —

2-Wire Interface, 7x-Serialization, Digital Filter

Disabled .................................................................. 14

8.9

LVDS Timing at Different Sampling Frequencies —

1-Wire Interface, 14x-Serialization, Digital Filter

Disabled .................................................................. 14

8.10

Serial Interface Timing Requirements................... 15

8.11

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

8.12

LVDS Timing at Different Sampling Frequencies —

1-Wire Interface, 14x-Serialization, Decimation by 2

Filter Enabled .......................................................... 16

8.13

LVDS Timing at Different Sampling Frequencies —

1-Wire Interface, 14x-Serialization, Decimation by 4

Filter Enabled .......................................................... 16

8.14

LVDS Timing at Different Sampling Frequencies —

1-Wire Interface, 14x-Serialization, Decimation by 8

Filter Enabled .......................................................... 16

8.15

Typical Characteristics .......................................... 22

9

Detailed Description ............................................ 28

9.1

Overview ................................................................. 28

9.2

Functional Block Diagram ....................................... 29

9.3

Feature Description................................................. 30

9.4

Device Functional Modes........................................ 37

9.5

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

9.6

Register Maps ......................................................... 40

10

Application and Implementation........................ 64

10.1

Application Information.......................................... 64

10.2

Typical Application ............................................... 65

11

Power Supply Recommendations ..................... 69

12

Layout................................................................... 69

12.1

Layout Guidelines ................................................. 69

12.2

Layout Example .................................................... 70

13

Device and Documentation Support ................. 71

13.1

Device Support...................................................... 71

13.2

Documentation Support ........................................ 73

13.3

Community Resources.......................................... 73

13.4

Trademarks ........................................................... 73

13.5

Electrostatic Discharge Caution ............................ 73

13.6

Glossary ................................................................ 73

14

Mechanical, Packaging, and Orderable

Information ........................................................... 73

4 Revision History

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

Changes from Revision D (September 2015) to Revision E

Page

•

Added The maximum limit used for the LVDD current at –40°C is 132 mA table note ....................................................... 12

•

Added bypass decimation values to the DATA_RATE, FILTERn_RATE, and FILTERn_COEFF_SET columns ............... 33

•

Changed D15 value of ADDR. (HEX) 28 to X ...................................................................................................................... 41

•

Changed this to the byte-wise for clarification...................................................................................................................... 41

•

Changed this to the word-wise for clarification..................................................................................................................... 41

•

Changed D15 value to 1 in Bit-Byte-Word Wise Output table.............................................................................................. 48

•

Added DATA_RATE>, FILTERn_RATE, and FILTERn_COEFF_SET values to the bypass decimation row in the

Digital Filters table ................................................................................................................................................................ 55

Changes from Revision C (September 2013) to Revision D

Page

•

Added Pin Configuration and Functions section, 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

•

Added "Sonar Imaging" in Applications ................................................................................................................................. 1

•

Updated Pinout. ...................................................................................................................................................................... 7

•

Added text note 2 to Figure 1 .............................................................................................................................................. 17

•

Added a text note to Figure 44. ........................................................................................................................................... 30