Cirrus Logic CS47048 for Audio Amplifier Applications

Cirrus Logic Inc. (Nasdaq: CRUS) recently announced the CS47048 audio system-on-a-chip (SOC) for audio amplifier applications. By combining an advanced 32-bit audio DSP, high performance multichannel audio codec and a digital audio receiver/transmitter into a single IC, the CS47048 reduces overall board space requirements and system cost. The CS47048 is available in a 100-pin LQFP package and is priced at $6.12 in quantities of 10,000.

The CS47048 features an advanced, 32-bit single core audio processor with powerful customer programming tools and multibit Delta-Sigma audio converter technology, both of which provide best in class performance. This integration allows audio amplifier designers to greatly simplify designs by reducing the number of ICs required to implement an automotive amplifier by as many as 10, depending on channel count and signal processing requirements. This chip reduction, which includes A/D converters, D/A converters, DSP, memory, and SPDIF I/O, dramatically reduces the board space required and system cost.

The CS47048 enables the mixed-signal audio converters to be co-located on the same silicon as the high-speed DSP while maintaining premium analog performance. The patented technology features new continuous time architectures, which improves the isolation between the converters and DSP and allows for the high-performance capability of the DSP with negligible impact to the converter performance. The 4-channel ADC measures 105 dB dynamic range and -98 dB THD+N and the 8-channel DACs offer 108 dB dynamic range and -98 dB THD+N – both superior metrics among SOC products and on par with the best stand-alone multichannel codecs available in the market today. The integrated sample rate converters simplify the management of audio sources at any sample rate up to 192 kHz. The digital audio sources can be accommodated through either the on-chip 192 kHz S/PDIF receiver and transmitter or the standard serial audio ports.

The CS47048 features a 32-bit, audio-optimized fixed-point DSP operating at 150 MHz with greater on-chip memory than competitive solutions. With this greater signal processing capacity, the CS47048 supports more channels, higher sample rates and processing chains. Customer programming is simplified through DSP Composer software, a powerful graphical programming tool that offers a wide array of audio drag-and-drop building blocks in which customers can easily adjust filters, delay, bass boost, graphic/parametric EQ and many other audio parameters. Cirrus Logic also provides numerous standard third-party audio algorithms from leading companies such as Dolby, DTS, SRS Labs and THX. The CS47048 is also software upgradeable, ensuring readiness for future audio features.

More info: Cirrus Logic Inc.