TAS5709AGPHP

Overview

The TAS5709AGPHP is a 20-W stereo digital audio power amplifier in a 48-pin HTQFP package. It operates from an 8-V to 24-V supply and accepts serial audio inputs at sample rates between 8 kHz and 48 kHz. The device features Class-D operation, two-band dynamic range control (DRC), and 22 programmable biquads for speaker equalization. It includes thermal and short-circuit protection with a factory-trimmed internal oscillator.

Feature Summary

• Integrates two-band DRC and 22 programmable biquads for speaker EQ and audio processing
• Supports autobank switching and autodetection for seamless sample rate changes without microprocessor intervention
• Features a fully programmable data path routing discrete channels to internal drivers
• Includes thermal shutdown and overcurrent protection with automatic recovery

Applications

• Driving stereo bridge-tied speakers in digital audio systems
• Integration with digital audio processors and MPEG decoders
• Applications requiring efficient Class-D amplification without external heatsinks

Procurement Notes

Verify the specific I2C address for the TAS5709A variant, which is 0x3A, distinct from the standard TAS5709 address of 0x36. Confirm that the ordering suffix PHP corresponds to the 48-pin HTQFP surface-mount package. Ensure compatibility with the required 3.3-V digital and analog supply voltages alongside the PVDD power stage supply.

Selection Notes

Select this component when a digital input interface is required for direct integration with audio processors. The TAS5709A offers a unique I2C address compared to the TAS5709, facilitating multi-device system designs. Consider the integrated DSP capabilities for speaker correction if external processing resources are limited.

Part Context

This device belongs to Texas Instruments' digital audio amplifier family designed for high-efficiency stereo output. It combines power amplification with advanced digital signal processing functions. The TAS5709A is functionally identical to the TAS5709 but utilizes a different I2C slave address to prevent bus conflicts in complex audio architectures.

Replacement Considerations

The TAS5709 is functionally equivalent but uses a different I2C address (0x36). Verify software configuration updates if substituting between these variants due to the address difference.

FAQ

What is the I2C device address for the TAS5709A?

The TAS5709A has a unique I2C device address of 0x3A.

How does the device handle sample rate changes?

It supports autobank switching and autodetection, allowing it to preload coefficients for different sample rates without external microprocessor intervention.