Texas Instruments TAS6424-Q1 | Demoboard TIDA-00733

Description

TIDA-00733 is a reference design for an eight-channel, Class-D amplifier that is capable of driving 2-Ω loads and an off-battery step-down power supply with 5-V and 3.3-V outputs. The amplifier design provides audio inputs for each audio channel. A high-performance audio analog-to-digital converter (ADC) creates the digital data stream from the audio inputs and creates the digital timing for the system.

Features

Advanced Load DiagnosticsRuns without Input ClocksAC Diagnostic for Tweeter Detection with Impedance and Phase Response

Easy to meet CISPR25-L5 EMC SpecificationQualified for Automotive ApplicationsAudio Inputs4 Channel I2S or 4/8-Channel TDM InputInput Sample Rates: 44.1 kHz, 48 kHz, 96 kHzInput Formats: 16-bit to 32-bit I2S, and TDM

Audio OutputsFour-Channel Bridge-Tied Load (BTL), With Option of Parallel BTL (PBTL)Up to 2.1-MHz Output Switching Frequency75 W, 10% THD Into 4 Ω at 25 V45 W, 10% THD Into 2 Ω at 14.4 V150 W, 10% THD Into 2 Ω at 25 V PBTL

Audio Performance Into 4 Ω at 14.4 VTHD+N < 0.03% at 1 W42-µVRMS Output Noise–90-dB Crosstalk

Load DiagnosticsOutput Open and Shorted LoadOutput-to-Battery or Ground ShortsLine Output Detection Up to 6 kΩHost-Independent OperationProgrammability for Flexible Production Line Testing

ProtectionOutput Current LimitingOutput Short Protection40-V Load DumpOpen Ground and Power TolerantDC OffsetOvertemperatureUndervoltage and Overvoltage

General Operation4.5-V to 26.4-V Supply voltageI2C Control With 4 Address OptionsClip Detection and Thermal Warning

Typical applications

• Automotive Head Units / Automotive External Amplifier Modules

More information

• IC product information