TAS5614PHD

Overview

The TAS5614PHD is a high-performance analog input Class D amplifier power stage from Texas Instruments, housed in a 64-pin HTQFP package. It delivers up to 150W per channel in stereo mode and 300W in mono mode into 4Ω loads. The device operates with a PVDD supply range of 18V to 38V and features PurePath HD integrated feedback technology. Key electrical specifications include an ultralow THD+N of 0.03% at 1W into 4Ω and a signal-to-noise ratio exceeding 100dB (A-weighted).

Feature Summary

• PurePath HD integrated closed-loop feedback technology for high-fidelity audio performance.
• Configurable output modes including stereo BTL, mono PBTL, and single-ended configurations via hardware pins.
• Built-in self-protection mechanisms covering undervoltage, overtemperature, clipping, and short-circuit conditions with error reporting.

Applications

• Home Theater Systems
• AV Receivers
• Active Speakers and Subwoofers

Procurement Notes

Verify the specific PHD suffix indicates the 64-pin QFP thermal package variant. Confirm that the intended application supports the required 36V supply voltage and PWM input interface. Ensure PCB layout guidelines for the exposed heat slug are strictly followed to maintain thermal ratings and EMI compliance.

Selection Notes

Select this component when high power density and low distortion are critical requirements. The PHD package offers a larger thermal pad area compared to the DKD variant, facilitating better heat dissipation for sustained high-power operation. Verify compatibility with upstream PWM processors such as the TAS5518.

Part Context

This part belongs to the TAS5614 family of PurePath HD digital-input power stages. It is designed to replace traditional AB-class amplifiers by providing comparable sound quality with significantly higher efficiency. The PHD package is one of two available thermal options for this series.

Replacement Considerations

Public confirmed substitute: TPA3223DDVR.