TAS5715PHPR

Overview

The TAS5715PHPR is a 25-W stereo digital audio power amplifier in a 48-pin HTQFP package. It operates from an 8-V to 26-V supply and delivers up to 50 W in PBTL mode with a 4-Ω load. The device features a single serial audio input supporting I2S formats at sample rates from 8 kHz to 48 kHz. Integrated audio processing includes a programmable two-band dynamic range control, speaker equalization, and DC blocking filters. Headphone PWM outputs are provided for external amplification.

Feature Summary

• Integrates a fully programmable digital audio processor with independent channel volume controls and mute capabilities.
• Supports parallel bridge-tied load (PBTL) configuration using a single output filter to reduce bill of materials cost.
• Includes automatic sample rate detection and autobank switching to preload coefficients without microprocessor intervention.
• Provides dedicated headphone PWM outputs and supports external headphone amplifier shutdown via the A_SEL pin.

Applications

• Stereo bridge-tied loudspeaker driving
• Digital audio systems requiring integrated speaker equalization
• Portable devices utilizing efficient Class-D operation

Procurement Notes

Verify the specific ordering suffix PHPR corresponds to the 48-HTQFP surface-mount package. Confirm that the required I2C address matches the hardware configuration on the A_SEL pin, as this determines the subaddress during initialization. Ensure the design accommodates the necessary bootstrap capacitors and decoupling components specified in the datasheet for stable operation.

Selection Notes

Select this component when a high-efficiency digital amplifier with integrated DSP functions is required. It is suitable for applications needing precise gain control and protection against thermal or short-circuit conditions. Consider the PBTL capability if higher power output into lower impedance loads is necessary without increasing the supply voltage significantly.

Part Context

This part belongs to Texas Instruments' TAS5715 series of digital audio power amplifiers. It is designed for integration with digital signal processors and MPEG decoders. The device utilizes a fourth-order noise shaper and oversampling to achieve high dynamic range and low distortion across the audible frequency spectrum.

Replacement Considerations

TAS5713PHP

FAQ

How does the device handle sample rate changes?

The TAS5715 automatically detects sample rate changes and uses autobank switching to preload coefficients for different sample rates, eliminating the need for external microprocessor intervention.

What is the function of the PBTL pin?

Driving the PBTL pin high configures the device for parallel bridge-tied load mode, synchronizing half-bridge turnoff for overcurrent protection and allowing single-filter operation.