The TAS5504-5142V4EVM PurePath Digital™ customer evaluation amplifier module
demonstrates two audio integrated circuits, TAS5504A and TAS5142, from Texas
The TAS5504APAG is a high-performance 32-bit (24-bit input) multichannel PurePath
Digital™ pulse width modulator (PWM) based on Equibit™ technology, with a fully
symmetrical AD modulation scheme. It accepts input sample rates from 32 kHz to
192 kHz. The device also has digital audio processing (DAP) that provides 48-bit signal
processing, advanced performance, and a high level of system integration. The device
has interfaces for headphone output and power supply volume control (PSVC).
The TAS5142DDV is a compact, high-power, digital amplifier power stage designed to
drive a 4-Ω loudspeaker up to 100 W/10% THD+N. It contains integrated gate drivers,
eight matched and electrically isolated enhancement-mode N-channel power DMOS
transistors, and protection/fault-reporting circuitry.
The DDV package has a PowerPAD™ on the top side for heat transfer through a
heat sink. The heat sink in this design is for evaluation purpose only.
This EVM, together with a TI input-USB board, is a complete 4-channel (or
2.1-channel) digital audio amplifier system that includes digital input (S/PDIF), analog
inputs, interface to PC, and DAP features, such as digital volume control, input and
output mixers, auto mute, equalization, tone controls, loudness, and dynamic range
This system is designed for home theater applications, such as flatscreen TVs, DVD
minicomponent systems, home theater in a box (HTIB), or DVD receivers.