TAS6422-Q1

ACTIVE

Automotive, 75-W, 2-MHz, 2-ch 4.5- to 26.4-V digital input Class-D audio amplifier w/ load dump

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Product details

Parameters

Audio input type Digital Input Architecture Class-D Speaker channels (Max) Stereo Power stage supply (Max) (V) 26.4 Power stage supply (Min) (V) 4.5 Load (Min) (ohms) 2 Output power (W) 75 THD + N @ 1 kHz (%) 0.03 Iq (Typ) (mA) 120 Control interface I2C Closed/open loop Closed Analog supply (Min) (V) 4.5 Analog supply (Max) (V) 26.4 Sampling rate (Max) (kHz) 96 PSRR (dB) 75 Operating temperature range (C) -40 to 125 open-in-new Find other Speaker amps

Package | Pins | Size

HSSOP (DKQ) 56 191 mm² 18.42 x 10.35 open-in-new Find other Speaker amps

Features

  • 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 Ω at 25 V
    • 45 W, 10% THD Into 2 Ω at 14.4 V
    • 150 W, 10% THD Into 2 Ω at 25 V PBTL
  • Audio Performance Into 4 Ω 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
    • 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
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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 Ω at 10% THD+N and 45 W into 2 Ω at 10% THD+N from a 14.4 V supply and 75 W into 4 Ω 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.

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Same functionality and pinout but is not an equivalent to the compared device:
TAS6421-Q1 ACTIVE Automotive, 75-W, 2-MHz, 1-ch 4.5- to 26.4-V digital input Class-D audio amplifier w/ load dump TAS6421-Q1 is our 1-channel automotive Class-D digital input amplifier which implements 2.1MHz switching frequency
TAS6424-Q1 ACTIVE Automotive, 75-W, 2-MHz, 4-ch 4.5- to 26.4-V digital input Class-D audio amplifier w/ load dump TAS6424-Q1 is our 4-channel automotive Class-D digital input amplifier which implements 2.1MHz switching frequency

Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet TAS6422-Q1 75-W, 2-MHz Digital Input 2-Channel Automotive Class-D Audio Amplifi datasheet Dec. 12, 2016
Application note Diagnostics and Protections in Automotive Audio Systems (Rev. A) Sep. 24, 2019
Application note Inductor Selection Guide for 2.1 MHz Class-D Amplifiers (Rev. A) Sep. 05, 2019
Technical articles “The Jetsons” are coming to an electric vehicle near you – sort of Jan. 31, 2019
User guide TAS6422-Q1 EVM User's Guide (Rev. A) Oct. 20, 2017
Application note Class-D Amplifier External Load Diagnostics Jan. 23, 2017
Technical articles How switching above the AM band eases automotive Class-D amplifier EMC designs Dec. 05, 2016
Application note LC Filter Design (Rev. A) Nov. 09, 2016

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HSSOP (DKQ) 56 View options

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