Texas Instruments has introduced the industry’s first 8-channel pulse-width modulator (PWM) audio processor with dual asynchronous sample rate converters (ASRCs) integrated on a single chip.
The HD-compatible TAS5548 allows home and pro audio designers to seamlessly mix two audio sources, providing design flexibility and cost savings compared to competitive solutions that require two chips. It accepts sample rates from 8 kHz to 192 kHz and converts them to a fixed rate of 96 kHz or 192 kHz, eliminating the need to create, store and change coefficients. This simplifies the design of digital multi-channel products, such as Blu-ray home-theater-in-a-box (HTiB), A/V receivers, mini/micro combos, and soundbars.
The TAS5548’s 40-kHz audio bandwidth is compatible with Dolby True HD and DTS-HD. Designers can optimize their products with rich audio processing capabilities, such as 7-band parametric equalization (EQ), bass and treble tone control, volume and loudness control, dynamic range compression (DRC), and input and output mixing.
Two integrated 4-channel ASRC cores allow audio system designers to switch sample rates without changing coefficients, while native processing at 96 kHz for 8-channel output enables ultra-low out-of-band noise and jitter suppression. An extra microphone and I2S input combines with the ASRC’s ability to mix two different sample rate sources. This feature provides the flexibility to mix a microphone with up to eight karaoke tracks.
An integrated smart energy manager also delivers more efficient operation. This can limit the audio system’s peak power by interrupting the host processor if the power threshold is reached. For high-end audio systems, a Power Supply volume control enables energy-efficient high-power performance.
The TAS5548EVM evaluation module can be purchased today for a suggested retail price of US$99. This evaluation module is provided with the easy-to-use ControlConsole graphical development suite to simplify the evaluation, configuration and debug of audio products. The ControlConsole’s graphical user interface (GUI) enables quick evaluation of all TAS5548 functions, including DRC, programmable EQ and energy management.
The TAS5548 is available today in a 56-pin TSSOP package for a suggested retail price of US$3.68 in 1,000-unit quantities.
This article originally appeared on EE Times Europe.