The TAS5342DDV6EVM PurePath Digital customer evaluation module demonstrates the integrated circuits TAS5342DDV and TAS5508BPAG from Texas Instruments(TI).
The TAS5342DDV is a high-performance, integrated stereo Digital Amplifier Power Stage designed to drive 4 Ohm speakers at up to 100 W per channel. The device incorporates TI‘s Equibit technology and is designed to be used with TI's Equibit modulators. This system requires only a simple passive demodulation filter to deliver high-quality, high-efficiency audio amplification.
TAS5508BPAG is a high performance 32 bit (24 bit input) multi channel PurePath Digital Pulse Width Modulator (PWM) based on Equibit technology with fully symmetrical AD modulation scheme. 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).
This EVM is configured with 4 BTL channels, 1 PBTL (parallel BTL) channel for the center channel and a subwoofer lineout using the DRV600 line driver.
The DRV600RTJ is a stereo line driver designed to allow the removal of the DC-blocking capacitors for reduced component count and cost. The DRV600RTJ is ideal for single supply electronics where size and cost are critical design parameters. The DRV600RTJ is capable of driving 2 VRMS into a 600 Ohm load at 3.3 V supply. The DRV600RTJ has a fixed gain of -1.5 V/V. Independent shutdown control for the left and right audio channels is implemented.
This EVM, together with a TI input-USB board, is a complete 5 channels + subwoofer line output digital audio amplifier system which includes digital input (S/PDIF), analog inputs, interface to PC and DAP features like digital volume control, input and output mixers, automute, tone controls, loudness, EQ filters and dynamic range compression (DRC). There are configuration options for power stage failure protection.
This 5 channel system + subwoofer line output is designed for home theater applications such as A/V receivers, DVD receivers, DVD mini-component systems or home theater in a box (HTIB).