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    Kit Overview

    The Analog Devices ADAU1701ADAU1701 SigmaDSP® mini evaluation board (EVAL-ADAU1701MINIZEVAL-ADAU1701MINIZ) provides stereo line-level analog audio input as well as a digital audio interface.


    Two of the ADAU1701ADAU1701 DAC channels are routed to an SSM2306 filterless Class-D amplifier, while the other two channels are routed to line-level outputs.


    The ADAU1701ADAU1701 can be controlled via the USBi interface control board connected to the I2C communications interface. On-board self-boot EEPROM is included for operating the board independently of the Analog Devices, Inc., SigmaStudio™ software. Push-buttons, LEDs, and a potentiometer are connected directly to the ADAU1701 GPIO pins for user control. This evaluation board can also be used to evaluate the Analog Devices audio processors:

    • ADAU1702 (SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs) and
    • ADAU1401 (SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs).


    The ADAU1701ADAU1701 is a complete single-chip audio system with a 28-/56-bit audio DSP, ADCs, DACs, and microcontroller-like control interfaces. Signal processing , which includes equalization, crossover, bass enhancement, multiband dynamics processing, delay compensation, speaker compensation, and stereo image widening, can be used to compensate for real-world limitations of speakers, amplifiers, and listening environments, providing dramatic improvements of perceived audio quality. 


    The ADAU1701 is a fully programmable DSP. The easy-to-use SigmaStudio software allows the user to graphically configure a custom signal processing flow using blocks, such as biquad filters, dynamics processors, level controls, and GPIO interface controls. 


    Key Applications: Multimedia speaker systems, MP3 player speaker docks, Automotive head units, Minicomponent stereos, Digital televisions, Studio monitors, Speaker crossovers, Musical instrument effects processors, In-seat sound systems (aircraft/motor coaches).

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    Software Tools




    The SigmaStudio™ graphical development tool is the programming, development, and tuning software for the SigmaDSP® audio processors. Familiar audio processing blocks can be wired together as in a schematic, and the compiler generates DSP-ready code and a control surface for setting and tuning parameters. This tool allows engineers with no DSP code writing experience to easily implement a DSP into their design and yet is still powerful enough to satisfy the demands of experienced DSP designers. SigmaStudio links with both Analog Devices evaluation boards and production designs to provide full in-circuit real-time IC control.


    SigmaStudio includes an extensive library of algorithms to perform audio processing such as filtering, mixing, and dynamics processing, as well as basic low-level DSP functions and control blocks. Advanced record-side processing algorithms such as Enhanced Stereo Capture and wind noise detection are included in the standard libraries. Plug-in algorithms from Analog Devices and 3rd party partners can be added to SigmaStudio's drag-and-drop library.


    Along with its graphical DSP signal flow development, SigmaStudio also includes other features to speed up the design cycle from product concept to release. SigmaStudio includes tools for intuitively setting control registers, calculating tables of filter coefficients, visualizing filter magnitude and phase responses, generating C header files, and sequencing a series of controls to ease your transition from SigmaStudio to system implementation on the audio processors.


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    Technical Documents

    Learning Center
    User GuideADI: User Guide for Mini Evaluation Board -EVAL-ADAU1701MINIZ
    DatasheetADI: Data Sheet for ADAU1701 - SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs
    DatasheetADI: Data Sheet for SSM2306 -2 W, Filterless, Class-D Stereo Audio Amplifier
    Design TechniquesADI: CN-0162 - Design Techniques for Analog Audio Input, Class-D Output with the ADAU1701 SigmaDSP Codec, Low Power SSM2306 Class-D Amplifier, and ADP3336 LDO
    Application NoteADI: AN-951 -Application Note for Using Hardware Controls with SigmaDSP GPIO Pins
    Application NoteADI: AN-923 - Application Note Designing a System Using the ADAU1701/ADAU1702 in Self-Boot Mode
    Training Video

    ADI: Training Video for Familiar audio processing blocks can be wired together as in a schematic, and the compiler generates DSP-ready code and a control surface for setting


    Design Elements
    CAD ModelADI: Symbols and Footprint for ADAU1701JSTZ


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    Kit Features



    Key features for ADAU1701ADAU1701:

    • 28-/56-bit, 50 MIPS digital audio processor
    • 2 ADCs: SNR of 100 dB, THD + N of −83 dB
    • 4 DACs: SNR of 104 dB, THD + N of −90 dB
    • Complete standalone operation
    • Self-boot from serial EEPROM
    • Auxiliary ADC with 4-input mux for analog control
    • GPIOs for digital controls and outputs
    • Fully programmable with SigmaStudio graphical tool
    • 28-bit × 28-bit multiplier with 56-bit accumulator for full double-precision processing
    • Clock oscillator for generating a master clock from crystal
    • PLL for generating master clock from 64 × fS, 256 × fS, 384 × fS, or 512 × fS clocks
    • Flexible serial data input/output ports with I2S-compatible, left-justified, right-justified, and TDM modes
    • Sampling rates of up to 192 kHz are supported
    • On-chip voltage regulator for compatibility with 3.3 V systems
    • 48-lead, plastic LQFP







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    Kit Contents


    The Analog Devices EVAL-ADAU1701MINIZEVAL-ADAU1701MINIZ package contents include

    •   The ADAU1701ADAU1701 mini evaluation board
    •   A USBi control interface board
    •   A USB cable
    •   SigmaStudio software
    •   Evaluation board documentation



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