TAS6424-Q1 Amplifier Datasheet

TAS6424-Q1 Datasheet, PDF, Equivalent


Part Number

TAS6424-Q1

Description

2-MHz Digital Input 4-Channel Automotive Class-D Audio Amplifier

Manufacture

etcTI

Total Page 30 Pages
Datasheet
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TAS6424-Q1
SLOS870B – SEPTEMBER 2016 – REVISED OCTOBER 2017
TAS6424-Q1 75-W, 2-MHz Digital Input 4-Channel Automotive Class-D Audio Amplifier
With Load-Dump Protection and I2C Diagnostics
1 Features
1 Advanced Load Diagnostics
– Runs without Input Clocks
– AC Diagnostic for Tweeter Detection with
Impedance and Phase Response
• Easy to meet CISPR25-L5 EMC Specification
• Qualified for Automotive Applications
• Audio Inputs
– 4 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
– Four-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 kΩ
– Host-Independent Operation
– Programmability for Flexible Production Line
Testing
• Protection
– Output Current Limiting
– Output Short Protection
– 40-V Load Dump
– Open Ground and Power Tolerant
– DC Offset
– Overtemperature
– Undervoltage and Overvoltage
• General Operation
– 4.5-V to 26.4-V Supply voltage
– I2C Control With 4 Address Options
– Clip Detection and Thermal Warning
1
2 Applications
• Automotive Head Units
• Automotive External Amplifier Modules
3 Description
The TAS6424-Q1 device is a Four-channel digital-
input Class-D audio amplifier that implements a 2.1
MHz PWM switching frequency that enables a cost-
optimized solution in a very small PCB size, full
operation down to 4.5 V for start/stop events, and
exceptional sound quality with up to 40 kHz audio
bandwidth
The TAS6424-Q1 Class-D audio amplifier is designed
for use in automotive head units and external
amplifier modules. The device provides four 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 filter size and cost, or below AM band
to optimize efficiency.
For a pin compatible two-channel amplifier, see the
TAS6422-Q1
The device is offered in a 56-pin HSSOP
PowerPAD™ package with the exposed thermal pad
up.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TAS6424-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
27 mm
25-W 4-channel
5.9 cm2
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.

TAS6424-Q1
TAS6424-Q1
SLOS870B – SEPTEMBER 2016 – REVISED OCTOBER 2017
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........................ 48
10.1 Application Information.......................................... 48
10.2 Typical Applications .............................................. 49
11 Power Supply Recommendations ..................... 55
12 Layout................................................................... 55
12.1 Layout Guidelines ................................................. 55
12.2 Layout Example .................................................... 57
12.3 Thermal Considerations ........................................ 57
13 Device and Documentation Support ................. 58
13.1 Documentation Support ........................................ 58
13.2 Receiving Notification of Documentation Updates 58
13.3 Community Resources.......................................... 58
13.4 Trademarks ........................................................... 58
13.5 Electrostatic Discharge Caution ............................ 58
13.6 Glossary ................................................................ 58
14 Mechanical, Packaging, and Orderable
Information ........................................................... 59
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (October 2016) to Revision B
Page
• Changed the Features and Description sections for better Product Folder visibility.............................................................. 1
Changes from Original (September 2016) to Revision A
Page
• Released the full version of the data sheet ........................................................................................................................... 1
2 Submit Documentation Feedback
Product Folder Links: TAS6424-Q1
Copyright © 2016–2017, Texas Instruments Incorporated


Features Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity TAS6424-Q1 SLOS870B – SEPTEMB ER 2016 – REVISED OCTOBER 2017 TAS642 4-Q1 75-W, 2-MHz Digital Input 4-Channe l Automotive Class-D Audio Amplifier Wi th Load-Dump Protection and I2C Diagnos tics 1 Features •1 Advanced Load Dia gnostics – Runs without Input Clocks – AC Diagnostic for Tweeter Detection with Impedance and Phase Response • Easy to meet CISPR25-L5 EMC Specificati on • Qualified for Automotive Applica tions • Audio Inputs – 4 Channel I2 S or 4/8-Channel TDM Input – Input Sa mple Rates: 44.1 kHz, 48 kHz, 96 kHz Input Formats: 16-bit to 32-bit I2S, and TDM • Audio Outputs – Four-Chan nel Bridge-Tied Load (BTL), With Option of Parallel BTL (PBTL) – Up to 2.1-M Hz Output Switching Frequency – 75 W, 10% THD Into 4 Ω at 25 V – 45 W, 1 0% THD Into 2 Ω at 14.4 V – 150 W, 10% THD Into 2 Ω at 25 V PBTL • Aud io Performance Into 4 Ω at 14.4 V – THD+N < 0.03% at 1 W – 42-µVRMS Output Noise – –90-dB Crosstalk • Loa.
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