TAS2780RYAR

Overview

The TAS2780RYAR is a mono digital input Class-D audio amplifier with integrated speaker IV sense, manufactured by Texas Instruments. It utilizes a Y-Bridge multi-level supply architecture to deliver up to 30 W maximum output power at 10% THD+N and 25 W continuous power at 1% THD+N into a 4 Ω load. The device operates with a PVDD supply range of 3 V to 24 V and a VBAT1S range of 2.7 V to 5.5 V. Key electrical parameters include an idle channel noise of 32 µV (A-weighted), a dynamic range of 110 dB, and a total harmonic distortion plus noise of -84 dB at 1 W output. It supports sample rates from 44.1 kHz to 96 kHz via I2S/TDM interfaces.

Feature Summary

• Y-Bridge Multi-Level Supply Architecture for optimized efficiency
• Integrated Real-time IV-Sense for speaker protection feedback
• Ultrasonic Output Support up to 40 kHz
• Spread Spectrum Control for EMI reduction

Applications

• Laptop and Desktop Computers
• Smart Speakers
• Tablets and Handhelds
• Wireless Speakers

Procurement Notes

Verify the specific suffix 'RYAR' against the manufacturer's orderable addendum to confirm package type and tape-and-reel specifications. Ensure the selected variant matches the required thermal performance and PCB footprint constraints for the target application design.

Selection Notes

Select this component for applications requiring high peak power delivery within a compact form factor. The integrated IV-sense capability allows for host-based speaker protection algorithms, reducing external component count. Verify compatibility with the system's digital audio interface requirements, specifically I2S or TDM configurations.

Part Context

The TAS2780 belongs to Texas Instruments' family of digital input Class-D audio amplifiers designed for portable and line-powered systems. It features a 30-pin HR-QFN package measuring 4 mm by 3.5 mm, providing a compact solution for space-constrained designs while maintaining high power output capabilities.

Replacement Considerations

Consult the official datasheet orderable addendum for confirmed substitute part numbers. Direct replacements must match the 30-pin HR-QFN package and support the same digital input protocols and supply voltage ranges.

FAQ

What is the purpose of the SDOUT pin?

The SDOUT pin provides serial data output for echo cancellation and returns real-time loudspeaker voltage and current sense data to the host processor through the return I2S path.

How does the device handle brownout conditions?

The TAS2780 includes a brownout prevention scheme with multiple thresholds that reduces gain in the signal path when the supply drops, preventing distortion and ensuring stable operation during voltage sags.