TAS2781RYYR datasheet(2/90 Pages) TI2

2 / 90 page

Table of Contents

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

2 Applications..................................................................... 1

3 Description.......................................................................1

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

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

6 Specifications.................................................................. 4

6.1 Absolute Maximum Ratings........................................ 4

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

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

6.4 Thermal Information....................................................5

6.5 Electrical Characteristics.............................................5

6.6 I2C Timing Requirements.......................................... 11

6.7 TDM Port Timing Requirements................................12

6.8 SPI Timing Requirements......................................... 13

6.9 Typical Characteristics.............................................. 14

7 Parameter Measurement Information.......................... 18

8 Detailed Description......................................................18

8.1 Overview................................................................... 18

8.2 Functional Block Diagram......................................... 19

8.3 Feature Description...................................................19

8.4 Device Functional Modes..........................................20

8.5 Operational Modes....................................................31

8.6 Faults and Status in TAS2781.................................. 32

8.7 Power Sequencing Requirements............................ 34

8.8 Digital Input Pull Downs............................................ 34

8.9 Register Map.............................................................34

8.10 SDOUT Equations ................................................. 67

9 Application and Implementation.................................. 68

9.1 Application Information............................................. 68

9.2 Typical Application.................................................... 68

9.3 Design Requirements............................................... 70

9.4 Detailed Design Procedure....................................... 70

9.5 Application Curves.................................................... 71

10 Initialization Set Up..................................................... 72

10.1 Initial Device Configuration - Power Up and

Software Reset............................................................72

10.2 Initial Device Configuration - PWR_MODE0...........72

10.3 Initial Device Configuration - PWR_MODE1...........73

10.4 Initial Device Configuration - PWR_MODE2...........73

10.5 Initial Device Configuration - PWR_MODE3...........74

11 Power Supply Recommendations..............................75

11.1 Power Supply Modes.............................................. 75

12 Layout...........................................................................76

12.1 Layout Guidelines................................................... 76

12.2 Layout Example...................................................... 76

13 Device and Documentation Support..........................78

13.1 Receiving Notification of Documentation Updates..78

13.2 Community Resources............................................78

13.3 Trademarks.............................................................78

14 Mechanical, Packaging, and Orderable

Information.................................................................... 79

14.1 Package Option Addendum.................................... 80

14.2 Tape and Reel Information......................................81

4 Revision History

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

Changes from Revision A (November 2022) to Revision B (July 2023)

Page

• Updated PVDD to 24 V with -20° C temp condition footnote in Absolute Maximum Ratings and

Recommended Operating Conditions.................................................................................................................4

• Clarifications to edge rate register description..................................................................................................34

• PFFB feature recommendation for ferrite bead filters.......................................................................................68

• Startup configuration script added to fix power-up pop issue........................................................................... 72

Changes from Revision * (July 2022) to Revision A (November 2022)

Page

• Change device status from "Advanced Information" to "Production Data."........................................................1

TAS2781

SLOSE86B – JULY 2022 – REVISED JULY 2023

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