TAS5261DKD

Overview

The TAS5261DKD is a mono digital amplifier power stage manufactured by Texas Instruments. It delivers high-performance audio amplification with an output power of 315 W into a 4-ohm load at 10% THD+N, and 125 W into an 8-ohm load at less than 0.09% THD+N. The device supports PWM frame rates from 192 kHz to 384 kHz and features an SNR of 110 dB when used with the TAS5518 modulator. It operates within a supply voltage range of 10.8 V to 13.2 V and functions between 0°C and +70°C. The component is housed in a thermally enhanced HSSOP-36 package.

Feature Summary

• Integrated self-protection circuitry including under-voltage protection, over-temperature warning, over-load protection, and short-circuit protection.
• Supports high-frequency pulse-width modulation frame rates ranging from 192 kHz to 384 kHz for high-fidelity audio reproduction.
• Includes power-on reset functionality to eliminate system power-supply sequencing requirements.
• Features resistor-programmable current limit and error reporting compatible with 3.3-V and 5-V logic levels.

Applications

• AV receivers
• DVD receivers
• Mini/micro component systems
• Home theater systems

Procurement Notes

Verify the specific suffix against official documentation, as the provided model lacks the G4 designation found in some distributor listings. Confirm end-of-life status and availability through authorized channels, as discontinuance notifications may apply. Ensure compatibility with external modulators like the TAS5518 for optimal performance metrics. Validate thermal management requirements for the HSSOP-36 package during integration.

Selection Notes

Select this component for applications requiring a single-channel digital power stage with high efficiency and low distortion. Ensure the design includes a passive demodulation filter suitable for the supported PWM frequencies. Verify that the power supply provides stable voltage within the 10.8 V to 13.2 V range. Consider the integrated protection features when designing speaker interfaces to prevent fault-induced damage.

Part Context

The TAS5261 belongs to Texas Instruments' digital amplifier power stage family, designed to drive speakers with low harmonic distortion. It complements digital front-end processors by handling the high-power output stage. The device simplifies system design by integrating protection circuits and eliminating the need for complex power-supply sequencing, making it suitable for compact audio solutions.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Texas Instruments documentation for potential legacy replacements or updated series components.