January 9, 2014 – Analog Devices (www.analog.com, NASDAQ: ADI), a global leader in high-performance semiconductors for signal processing applications, announced the addition of audio-focused products to its SigmaDSP® processor family, which delivers significantly improved signal processing capabilities compared to existing SigmaDSP products. In particular, the ADAU1452 SigmaDSP processor, through hardware and software enhancements, can process audio algorithms up to three times faster than previous products, expanding the range of choices available to system designers to improve product audio performance.

The newly launched processor features a proprietary hardware architecture optimized to efficiently process audio signal flow created with ADI's award-winning user-friendly SigmaStudio™ graphical programming tool. The ADAU1452 is the first product in the SigmaDSP audio processor family capable of simultaneous time-domain and frequency-domain processing. This means the range of signal processing techniques that can be implemented to solve system design challenges is significantly expanded.

The ADAU1452 is suitable for a wide variety of audio-related applications including automotive infotainment (amplifiers, head units), consumer audio devices (soundbars, subwoofers, active speakers), and professional audio equipment (amplifiers, mixers, effect units).

The ADAU1452 operates at a frequency of 294.912MHz and features a 1.2V, 32-bit DSP core that executes a maximum of 6,144 instructions per sample at the standard 48kHz sample rate (equivalent to approximately 1.2GMAC/s or 295MIPS). The streamlined core architecture allows over 3,000 biquad filters to be processed in a single program, while the expanded data memory can accommodate FIR filters with a maximum tap length of 24,000. The ADAU1452 SigmaDSP's clock generator, onboard asynchronous sample rate converter, and flexible hardware audio routing matrix greatly simplify complex multirate audio systems, while the clock hardware and integer PLL (phase-locked loop) can simultaneously generate up to 15 audio sample rates.

The ADAU1452 supports configurable 48-channel, 32-bit serial ports, stereo S/PDIF interface, and general-purpose input/output pins, enabling connection to a wide range of data converters, digital audio devices, amplifiers, and control circuits. Additionally, using the PDM interface and integrated decimation filter, it can directly connect to up to four MEMS microphones.

The ADAU1452 features independent slave and master I2C/SPI control ports, allowing programming and configuration using an external master device, as well as direct configuration of external slave devices when acting as a master device. Thanks to this functionality and self-boot capability, compact standalone system designs that do not require external inputs are also possible.