TAS6424RQDKQRQ1

Overview

The TAS6424RQDKQRQ1 is a four-channel digital-input Class-D automotive audio amplifier. It operates on a 4.5 V to 26.4 V supply range and supports up to 75 W per channel into a 4 Ω load at 25 V BTL, or 150 W in parallel BTL mode. The device utilizes a 2.1 MHz PWM switching frequency and accepts I2S or TDM digital inputs with sample rates of 44.1 kHz, 48 kHz, and 96 kHz. It features advanced load diagnostics, enhanced EMI management, and I2C control.

Feature Summary

• Supports high-resolution digital audio via I2S and TDM interfaces with configurable input formats.
• Integrates comprehensive load diagnostic functions for detecting open loads, shorts, and AC-coupled tweeters without requiring input clocks.
• Includes enhanced electromagnetic interference management through spread-spectrum modulation and optimized slew rate control.
• Provides robust protection mechanisms including 40 V load dump tolerance, reverse current capability, and overtemperature shutdown.

Applications

• Automotive head units
• Automotive external amplifier modules

Procurement Notes

Verify the specific ordering suffix DKQRQ1 against the manufacturer's official datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with AEC-Q100 Grade 1 requirements for the intended operating temperature range. Confirm that the design accommodates the required thermal dissipation for the HSSOP-56 package under maximum power conditions.

Selection Notes

Select this component when a four-channel digital interface is required for automotive audio systems. It is suitable for designs needing high output power with minimal external filtering due to the high switching frequency. Consider the integrated diagnostics for manufacturing test efficiency and system reliability monitoring during operation.

Part Context

This part belongs to the Texas Instruments TAS6424 family of automotive Class-D amplifiers. It shares pin compatibility with other variants such as the TAS6424E-Q1 and TAS6424M-Q1, though power ratings and voltage ranges differ. The R-Q1 variant specifically offers latched and non-latched clip detection capabilities compared to non-R variants.

Replacement Considerations

TAS6424EQDKQRQ1

FAQ

Does the TAS6424R-Q1 support DC diagnostics without an active audio signal?

Yes, the device can perform DC diagnostics without input clocks to detect faults such as open loads or shorted outputs.

What is the maximum load dump voltage the device can tolerate?

The device is designed to withstand a 40 V load dump transient on the PVDD and VBAT pins.