TAS5121DKD

Overview

The TAS5121DKD is a high-performance digital amplifier power stage designed to drive a 4-ohm speaker up to 100 W RMS. It incorporates PurePath Digital technology and operates with a 3.3-V digital interface. The device delivers greater than 90% efficiency into a 4-ohm load. Electrical characteristics include an output power of 80 W RMS at less than 0.2% THD+N, and a signal-to-noise ratio of 95 dB. The supply voltage range for GVDD_x is 10.8 V to 13.2 V, while PVDD_x supports up to 32 V. It features overcurrent, overtemperature, and undervoltage protection.

Feature Summary

• Integrates PurePath Digital technology for high-efficiency digital audio amplification.
• Includes self-protecting design with overcurrent, overtemperature, and undervoltage safeguards.
• Features a thermally enhanced 36-pin PSOP3 package with an exposed metal pad for conductive cooling.

Applications

• DVD Receivers
• Home Theatre Systems
• Mini/Micro Component Systems
• Internet Music Appliances

Procurement Notes

Verify the specific ordering suffix DKD corresponds to the tube packaging option rather than the tape and reel variant (DKDR). Confirm that the component meets RoHS compliance standards as indicated in the datasheet documentation. Ensure the procurement channel provides original manufacturer documentation to validate authenticity and traceability.

Selection Notes

Select this component when designing systems requiring high-power monaural output with digital input interfaces. Consider the thermal management requirements associated with the exposed pad package for efficient heat dissipation. Ensure compatibility with TI audio PWM processors and appropriate passive demodulation filters to achieve specified performance metrics.

Part Context

The TAS5121DKD belongs to Texas Instruments' TAS5121 series of digital amplifier power stages. It is part of the broader portfolio of audio integrated circuits designed for consumer electronics. The device utilizes a 36-pin PSOP3 package, distinguishing it from other variants in the family that may offer different packaging or operational modes.

Replacement Considerations

TAS5121DKDR is a direct replacement offering identical electrical specifications but supplied in tape and reel packaging instead of tubes.