TAS5001IPFB

Audio Special Purpose Overview

The TAS5001IPFB is a stereo PCM-to-PWM modulator designed for True Digital Audio Amplifier (TDAA) systems. It accepts serial digital audio inputs and generates differential 3.3-V PWM signals compatible with the TAS5100 power stage. The device supports 16-, 20-, or 24-bit data formats at sampling rates of 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, and 96 kHz. Key electrical specifications include a 96-dB dynamic range, THD+N less than 0.08%, and operation within a 3 V to 3.6 V supply voltage range. It features an internal low-jitter PLL, de-emphasis filtering, and mute functions.

Audio Special Purpose Feature Summary

• Equibit modulation technology providing high-efficiency digital audio amplification
• Integrated low-jitter phase-locked loop (PLL) for clock generation
• Supports IIS, right/left justified, and DSP serial interface formats
• Hardware-selectable de-emphasis filter for 44.1-kHz and 48-kHz sampling rates

Audio Special Purpose Applications

• DVD Audio systems
• Home Theater setups
• Car Audio Amplifiers and Head Units
• Internet Music Appliances
• Mini/Micro Component Systems

Audio Special Purpose Procurement Notes

Verify component authenticity through authorized Texas Instruments distributors or certified partners. Confirm the package marking matches the 48-TQFP specification. Check for RoHS compliance status as indicated in the ordering information. Ensure storage conditions adhere to the specified moisture sensitivity level requirements prior to soldering.

Audio Special Purpose Selection Notes

Select the TAS5001IPFB when designing a TDAA system requiring a dedicated PCM-PWM modulator paired with a TAS5100 output stage. Choose this industrial-grade variant (-40°C to 85°C) for automotive or harsh environment applications. Ensure the host processor supports the required serial audio protocols and provides appropriate master/slave clock configurations.

Audio Special Purpose Part Context

This component belongs to the TAS500/TAS5100 TDAA family from Texas Instruments. It serves as the digital front-end modulator, converting PCM data into PWM signals. It is distinct from power amplifier ICs, functioning specifically as the signal processor that drives external H-bridge power devices like the TAS5100.

Audio Special Purpose Replacement Considerations

The TAS5001IPFBG4 is a lead-free version of the same functional device. Verify pin compatibility and thermal characteristics if substituting between standard and lead-free variants. No direct cross-brand replacements are documented; design modifications may be required for alternative modulators.

Audio Special Purpose FAQ

What serial audio formats does the TAS5001 support?

It supports 16-, 20-, and 24-bit right-justified, 16-, 20-, and 24-bit IIS, 16-bit left-justified, and 16-bit DSP frame formats.

How is the de-emphasis function controlled?

De-emphasis is enabled via the DEM_EN pin and selected for either 44.1 kHz or 48 kHz sampling rates using the DEM_SEL pin.

What is the purpose of the VALID_L and VALID_R pins?

These pins indicate when the PWM outputs are valid. They go low during error conditions such as loss of clock lock or reset states.