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TPA3251

SLASE40D – MAY 2015 – REVISED APRIL 2016

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Copyright © 2015–2016, Texas Instruments Incorporated

Table of Contents

1

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

2

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

3

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

4

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

5

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

6

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

7

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

7.1

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

7.2

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

7.3

Recommended Operating Conditions ....................... 6

7.4

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

7.5

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

7.6

Audio Characteristics (BTL) ...................................... 8

7.7

Audio Characteristics (SE) ....................................... 9

7.8

Audio Characteristics (PBTL) ................................... 9

7.9

Typical Characteristics, BTL Configuration............. 10

7.10

Typical Characteristics, SE Configuration............. 12

7.11

Typical Characteristics, PBTL Configuration ........ 13

8

Parameter Measurement Information ................ 14

9

Detailed Description ............................................ 14

9.1

Overview ................................................................. 14

9.2

Functional Block Diagrams ..................................... 15

9.3

Feature Description................................................. 17

9.4

Device Protection System ....................................... 17

10

Application and Implementation........................ 21

10.1

Application Information.......................................... 21

10.2

Typical Applications .............................................. 21

11

Power Supply Recommendations ..................... 27

11.1

Power Supplies ..................................................... 27

11.2

Powering Up.......................................................... 28

11.3

Powering Down ..................................................... 29

12

Layout................................................................... 29

12.1

Layout Guidelines ................................................. 29

12.2

Layout Examples................................................... 30

13

Device and Documentation Support ................. 33

13.1

Documentation Support ........................................ 33

13.2

Community Resources.......................................... 33

13.3

Trademarks ........................................................... 33

13.4

Electrostatic Discharge Caution ............................ 33

13.5

Glossary ................................................................ 33

14

Mechanical, Packaging, and Orderable

Information ........................................................... 33

4 Revision History

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

Changes from Revision C (June 2015) to Revision D

Page

•

Changed the datasheet device number From: TPA3251D2 To TPA3251 ............................................................................ 1

Changes from Revision B (June 2015) to Revision C

Page

•

Changed from a one page Product Preview to the full datasheet.......................................................................................... 1

Changes from Revision A (June 2015) to Revision B

Page

•

Changed Features list item From: 80 dB PSRR (BTL, No Input Signal) To: 60 dB PSRR (BTL, No Input Signal ................ 1

•

Changed Features list item From: >112 dB (A Weighted) SNR To: >111 dB (A Weighted) SNR ......................................... 1

Changes from Original (May 2015) to Revision A

Page

•

Changed the Features list for Total Output Power at 1%THD+N .......................................................................................... 1

•

Changed the Features list item Advanced Integrated Feedback Design... ............................................................................ 1

•

Changed the Features list item From: <65 µV (A-Weighted) Output Noise To: <60 µV (A-Weighted) Output Noise ........... 1

•

Changed the Features list for Multiple Configurations Possible:............................................................................................ 1

•

Changed the Description ....................................................................................................................................................... 1

•

Added the Simplified Schematic ............................................................................................................................................ 1