The ADAU1452 is an automotive-qualified audio processor that far exceeds the digital signal processing capabilities of earlier SigmaDSP® devices. Its restructured hardware architecture is optimized for efficient audio processing. The audio processing algorithms are realized in sample-by-sample and block- by-block paradigms, which can both be executed simultaneously in a signal processing flow created using the graphical programming tool, SigmaStudio™. The new digital signal processor (DSP) core architecture enables some types of audio processing algorithms to be executed using significantly fewer instructions than were required on previous SigmaDSP generations, leading to vastly improved code efficiency.
The 1.2 V, 32-bit DSP core can run at frequencies of up to 294.912 MHz and execute up to 6144 instructions per sample at the standard sample rate of 48 kHz. However, a wide range of other sample rates are available, in addition to industry standard rates. The integer PLL and flexible clock generator hardware can generate up to 15 audio sample rates simultaneously. These clock generators, along with the on-board asynchronous sample rate converters (ASRCs) and flexible hardware audio routing matrix, make the ADAU1452 an ideal audio hub that greatly simplifies the design of complex multirate audio systems.
The ADAU1452 interfaces with a wide range of ADCs, DACs, digital audio devices, amplifiers, and control circuitry, due to its highly configurable serial ports, S/PDIF interfaces, and multipurpose input/output pins. It can also directly interface with PDM-output MEMS microphones, thanks to integrated decimation filters specifically designed for that purpose.
Independent slave and master I2C/SPI control ports allow the ADAU1452 not only to be programmed and configured by an external master device, but also to program and configure external slave devices directly. This, combined with self boot functionality, enables the design of standalone systems that do not require any external input to operate.
The power efficient DSP core executes full programs while consuming only a few hundred milliwatts (mW) of power and can run at a maximum program load while consuming less than a watt, even in worst case temperatures exceeding 100°C. This relatively low power consumption and small footprint make the ADAU1452 an ideal replacement for large, general-purpose DSPs that consume more power at the same processing load.
|Title||Content Type||File Type|
|ADAU1452: SigmaDSP Digital Audio Processor Data Sheet (Rev A, 01/2014) (pdf, 9051 kB)||Data Sheets|
|Next-Generation SigmaDSP® Processor Unveiled By Analog Devices (07 Jan 2014)||Press Releases||HTML|
|Glossary of EE Terms||Glossary||HTML|
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