TAS6422-Q1 Amplifier Datasheet

TAS6422-Q1 Datasheet, PDF, Equivalent


Part Number

TAS6422-Q1

Description

2-MHz Digital Input 2-Channel Automotive Class-D Audio Amplifier

Manufacture

etcTI

Total Page 30 Pages
Datasheet
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TAS6422-Q1
SLOS947 – DECEMBER 2016
TAS6422-Q1 75-W, 2-MHz Digital Input 2-Channel Automotive Class-D Audio Amplifier
With Load-Dump Protection and I2C Diagnostics
1 Features
1 Qualified for Automotive Applications
• Audio Inputs
– 2 Channel I2S or 4/8-Channel TDM Input
– Input Sample Rates: 44.1 kHz, 48 kHz, 96 kHz
– Input Formats: 16-bit to 32-bit I2S, and TDM
• Audio Outputs
– Two-Channel Bridge-Tied Load (BTL), With
Option of Parallel BTL (PBTL)
– Up to 2.1 MHz Output Switching Frequency
– 75 W, 10% THD Into 4 at 25 V
– 45 W, 10% THD Into 2 at 14.4 V
– 150 W, 10% THD Into 2 at 25 V PBTL
• Audio Performance Into 4 at 14.4 V
– THD+N < 0.03% at 1 W
– 42 µVRMS Output Noise
– –90 dB Crosstalk
• Load Diagnostics
– Output Open and Shorted Load
– Output-to-Battery or Ground Shorts
– Line Output Detection Up to 6 k
– Runs Without Input Clocks
– AC Diagnostic for Tweeter detection
• Protection
– Output Current Limiting
– Output Short Protection
– 40 V Load Dump
– Open Ground and Power Tolerant
– DC Offset
– Overtemperature
– Undervoltage and Overvoltage
• General Operation
– EVM Passes CISPR25-L5 EMC Specification
– 4.5 V to 26.4 V Supply voltage
– I2C Control With 4 Address Options
– Clip Detection and Thermal Warning
3 Description
The TAS6422-Q1 device is a Two-channel digital-
input Class-D audio amplifier designed for use in
automotive head units and external amplifier
modules. The device provides two channels at 27 W
into 4 at 10% THD+N and 45 W into 2 at 10%
THD+N from a 14.4 V supply and 75 W into 4 at
10% THD+N from a 25 V supply. The Class-D
topology dramatically improves efficiency over
traditional linear amplifier solutions. The output
switching frequency can be set either above the AM
band, which eliminates the AM-band interference and
reduces output filtering and cost, or below AM band
to optimize efficiency.
The wide supply-voltage range from 4.5 V to 26.4 V
helps minimize audio artefacts in start-stop
applications
The device incorporates all the functionality required
to perform in the demanding OEM applications area.
The device has a built-in load diagnostic function for
detecting and diagnosing misconnected outputs as
well as detection AC-coupled tweeters to help to
reduce test time during the manufacturing process.
The device is offered in a 56-pin HSSOP
PowerPAD™ package with the exposed thermal pad
up.
For a pin compatible four-channel devices see the
TAS6424-Q1 device.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TAS6422-Q1
HSSOP (56)
18.41 mm × 7.49 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
PCB AREA
2 Applications
• Automotive Head Units
• Automotive External Amplifier Modules
1
27mm
25-W 2-channel
5.9cm2
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.

TAS6422-Q1
TAS6422-Q1
SLOS947 – DECEMBER 2016
www.ti.com
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 ......................... 4
7 Specifications......................................................... 6
7.1 Absolute Maximum Ratings ...................................... 6
7.2 ESD Ratings.............................................................. 6
7.3 Recommended Operating Conditions....................... 7
7.4 Thermal Information .................................................. 7
7.5 Electrical Characteristics........................................... 7
7.6 Timing Requirements .............................................. 10
7.7 Typical Characteristics ............................................ 11
8 Parameter measurement Information ................ 16
9 Detailed description............................................. 17
9.1 Overview ................................................................. 17
9.2 Functional Block Diagram ....................................... 17
9.3 Feature Description................................................. 18
9.4 Device Functional Modes........................................ 28
9.5 Programming........................................................... 28
9.6 Register Maps ......................................................... 32
10 Application and Implementation........................ 46
10.1 Application Information.......................................... 46
10.2 Typical Application ................................................ 47
11 Power Supply Recommendations ..................... 51
12 Layout................................................................... 51
12.1 Layout Guidelines ................................................. 51
12.2 Layout Example .................................................... 53
12.3 Thermal Considerations ........................................ 53
13 Device and Documentation Support ................. 54
13.1 Documentation Support ........................................ 54
13.2 Receiving Notification of Documentation Updates 54
13.3 Community Resources.......................................... 54
13.4 Trademarks ........................................................... 54
13.5 Electrostatic Discharge Caution ............................ 54
13.6 Glossary ................................................................ 54
14 Mechanical, Packaging, and Orderable
Information ........................................................... 55
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
DATE
December 2016
REVISION
*
NOTES
Initial release.
2 Submit Documentation Feedback
Product Folder Links: TAS6422-Q1
Copyright © 2016, Texas Instruments Incorporated


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TAS6422-Q1 SLOS947 – DECEM BER 2016 TAS6422-Q1 75-W, 2-MHz Digital Input 2-Channel Automotive Class-D Aud io Amplifier With Load-Dump Protection and I2C Diagnostics 1 Features •1 Qu alified for Automotive Applications • Audio Inputs – 2 Channel I2S or 4/8- Channel TDM Input – Input Sample Rate s: 44.1 kHz, 48 kHz, 96 kHz – Input F ormats: 16-bit to 32-bit I2S, and TDM Audio Outputs – Two-Channel Bridge -Tied Load (BTL), With Option of Parall el BTL (PBTL) – Up to 2.1 MHz Output Switching Frequency – 75 W, 10% THD I nto 4 Ω at 25 V – 45 W, 10% THD Int o 2 Ω at 14.4 V – 150 W, 10% THD In to 2 Ω at 25 V PBTL • Audio Perform ance Into 4 Ω at 14.4 V – THD+N < 0 .03% at 1 W – 42 µVRMS Output Noise – –90 dB Crosstalk • Load Diagnos tics – Output Open and Shorted Load Output-to-Battery or Ground Shorts Line Output Detection Up to 6 kΩ – Runs Without Input Clocks – AC Diagnostic for Tweeter detection • Protection.
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