TAS5121DKDR

Overview

The TAS5121DKDR 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. Key electrical parameters include an output power of 100 W at 10% THD+N, 80 W at 0.2% THD+N, and 0.05% THD+N at 1 W into 4 ohms. It features a 36-pin PSOP3 package.

Feature Summary

• Incorporates PurePath Digital technology for high-quality digital audio amplification
• Features self-protecting design including overcurrent, overtemperature, and undervoltage protection
• Provides efficient Class-D modulation with power efficiency exceeding 90%
• Utilizes a thermally enhanced 36-pin PSOP3 package for conductive cooling

Applications

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

Procurement Notes

Verify the specific ordering suffix DKDR indicates tape and reel packaging rather than tube packaging. Confirm that the component matches the 36-pin PSOP3 physical dimensions and thermal pad specifications required for your PCB layout. Ensure compatibility with the recommended demodulation filter design to maintain optimal performance and prevent overcurrent protection activation.

Selection Notes

Select this component when designing systems requiring high-efficiency digital amplification with integrated protection mechanisms. It is suitable for applications needing a simple passive demodulation filter alongside a TI audio PWM processor. Consider the thermal requirements and heatsink design necessary to manage junction temperatures during high-power operation.

Part Context

The TAS5121 is part of Texas Instruments' PurePath Digital family of audio power stages. It is designed to work in conjunction with TI audio PWM processors to deliver high-fidelity sound. The device simplifies system design by integrating gate drive logic and protection circuits directly into the power stage.

Replacement Considerations

TAS5121IDKDR