TAS5012PFB

Audio Special Purpose Overview

The TAS5012PFB is a stereo PCM-PWM modulator from Texas Instruments, designed as part of the True Digital Audio Amplifier (TDAA) system. It converts serial digital audio streams into 3.3-V PWM signals for driving external H-bridge power stages like the TAS5110. The device supports 16-, 20-, and 24-bit input data with sampling rates up to 192 kHz. Key electrical specifications include a 102-dB dynamic range and THD+N less than 0.06%. It operates on a single 3.3-V supply within an operating temperature range of 0°C to 70°C.

Audio Special Purpose Feature Summary

• 102-dB dynamic range with THD+N < 0.06%
• Supports 32-kHz to 192-kHz sampling rates
• Integrated low-jitter PLL and digital interpolation filter
• Hardware-selectable serial interfaces: IIS, DSP, Right/Left Justified

Audio Special Purpose Applications

• DVD-Audio systems
• Home theater amplifiers
• Car audio amplifiers and head units
• Mini/micro component systems

Audio Special Purpose Procurement Notes

Verify the package suffix 'PFB' corresponds to the standard tape-and-reel or tray configuration required by the manufacturing line. Confirm that the 0°C to 70°C commercial grade meets the thermal requirements of the final enclosure. Ensure the design accommodates the 48-TQFP footprint dimensions.

Audio Special Purpose Selection Notes

Select the TAS5012PFB when a commercial-grade (0°C to 70°C) PCM-PWM modulator is needed. For automotive applications requiring -40°C to 85°C operation, the TAS5012IPFB variant should be selected instead. This component requires an external power stage, such as the TAS5110, to drive loudspeakers.

Audio Special Purpose Part Context

The TAS5012 serves as the digital front-end in TI's TDAA architecture. It pairs with the TAS5110 H-bridge power output device to form a complete Class-D amplifier solution. This combination allows for high-efficiency digital audio amplification with reduced component count compared to traditional analog Class-D designs.

Audio Special Purpose Replacement Considerations

The TAS5012IPFB is the direct industrial-grade replacement offering the same functionality over an extended temperature range (-40°C to 85°C). Other members of the TAS5000/TAS5110 family may offer similar modulation but require verification of pin compatibility and feature sets.