Development with Minimal Learning Curve Using SigmaStudio Graphical Programming Tool

Analog Devices (ADI) has launched four fixed-point digital signal processors (DSPs) for automotive applications.

The ADAU1466 and ADAU1467 SigmaDSP processors are designed to address the growing demand for new and advanced audio algorithms, delivering industry-leading fixed-point DSP performance by increasing internal program memory by 3x and internal data memory by 2x compared to existing products.

The ADAU1463 and ADAU1467 utilize 88-pin LFCSP packaging and also provide eight pins that can be configured for serial data input or output. This significantly increases design flexibility in amplifier or head unit applications and enables support for applications such as hands-free, active noise control, and acoustic noise reduction.

Additionally, like all other SigmaDSP processors, these devices utilize a proprietary hardware architecture optimized for efficient audio processing. The quad MAC (Multiply-Accumulate) architecture includes a built-in audio-specific hardware accelerator that optimizes MIPS performance for latency-sensitive applications.

The ADAU146x product family utilizes ADI's award-winning SigmaStudio graphical programming tool, enabling rapid signal flow and application development and tuning with a minimal learning curve.

Compared to other DSP devices, the ADAU146x product family provides superior parallel processing performance, usability, and system scalability. For system designers, both the cost-effective 150 MHz and 300 MHz DSP cores represent a better choice than traditional demanding applications. The 300 MHz DSP core delivers up to 1.2 GMAC performance, processing 6,144 instructions while running on 48 kHz audio samples.

The embedded stereo asynchronous sample rate converter (ASRC), audio signal router matrix, and on-chip RAM that is twice the size of previous DSP product families enable straightforward handling of algorithms with very demanding system requirements and allow applications to be used for diverse purposes. Integrated PLL and versatile clock generation hardware can simultaneously generate up to 15 audio sample rates.

The power-efficient ADAU146x product family core can execute the entire signal flow with power consumption of just a few hundred milliwatts (mW), remaining under 1 watt (W) even at maximum program load (25°C). The ADAU146x DSP is an ideal product for replacing large, expensive, and power-hungry general-purpose DSPs with equivalent processing capability. Using the ADAU146x DSP with its easy-to-configure serial ports, S/PDIF interface, multi-purpose input/output pins, and built-in 10-bit auxiliary ADC significantly reduces system complexity when interfacing with ADCs, DACs, digital audio devices, amplifiers, and other control circuits.