Analog Devices, Inc. introduced an audio-centric addition to its SigmaDSP(R) processor line that far exceeds the signal processing capabilities of earlier SigmaDSP devices. Improvements in hardware and software enable the ADAU1452 SigmaDSP processor to execute up to three times more audio processing algorithms than its predecessors, providing system designers with more flexibility to improve the audio performance of their products. The new processor features a unique hardware architecture that is optimized for efficient processing of audio signal flows created using ADI's award winning, user-friendly SigmaStudio(TM) graphical programming tool.

The ADAU1452 is the first product in the SigmaDSP family of audio processors to allow both time-domain and frequency-domain processing simultaneously. This extends the range of signal processing techniques that can be implemented to solve system design problems dium=PR. The ADAU1452 features a 1.2-volt, 32-bit DSP core that runs at frequencies up to 294.912 MHz and executes up to 6,144 instructions per sample (the approximate equivalent of 1.2 GMAC/s or 295 MIPS) at the standard sample rate of 48 kHz.

The streamlined core architecture allows for more than 3,000 biquad filters to be executed in a single program. The expanded data memories can accommodate FIR filters of up to 24,000 taps in length. The ADAU1452 SigmaDSP's clock generators, on-board asynchronous sample-rate converters and flexible hardware audio routing matrix greatly simplify the design of complex multi-rate audio systems, while the clock hardware and integer phase-locked loop (PLL) generate up to 15 audio sample rates simultaneously.