TAS6424L-Q1 Texas instruments

TAS6424L-Q1

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TAS6424L-Q1

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Описание

The TAS6424L-Q1 device is a four-channel digital-input Class-D audio amplifier designed for use in automotive head units and external amplifier modules. The device provides four channels at 27 W into 4 Ω at 10% THD+N and 27 W into 2 Ω at 10% THD+N from a 14.4 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 18 V helps minimize audio artefacts in start-stop applicationsThe 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 two-channel devices see the TAS6422-Q1 device.

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
- 27 W, 10% THD Into 4 Ω at 14.4 V
- 27 W, 10% THD Into 2 Ω at 14.4 V
- 80 W, 10% THD Into 2 Ω at 18 V PBTL
Audio Performance Into 4 Ω at 14.4 V
- THD+N < 0.03% at 1 W
- 42 µV_RMS 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 18 V Supply voltage
- I²C Control With 4 Address Options
- Clip Detection and Thermal Warning

Audio input type	Digital Input
Architecture	Class-D
Speaker channels (max)	4
Rating	Automotive
Power stage supply (max) (V)	18
Power stage supply (min) (V)	4.5
Load (min) (Ω)	2
Output power (W)	27
THD + N at 1 kHz (%)	0.03
Iq (typ) (mA)	165
Control interface	I2C
Closed/open loop	Closed
Analog supply (min) (V)	4.5
Analog supply (max) (V)	18
Sampling rate (max) (kHz)	96
PSRR (dB)	70
Operating temperature range (°C)	-40 to 125