Alternative Parts

  • ADAU1401A
    ADAU1401A

    SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs

Overview

Features and Benefits

  • 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 master clock from crystal
  • See Data Sheet for Additional Information

Product Details

The ADAU1401 is a complete single-chip audio system with a 28-/56-bit audio DSP, ADCs, DACs, and microcontroller-like control interfaces. Signal processing includes equalization, cross over, bass enhancement, multiband dynamics processing, delay compensation, speaker compensation, and stereo image widening. This processing can be used to compensate for real-world limitations of speakers, amplifiers, and listening environments, providing dramatic improvements in perceived audio quality.

Its signal processing is comparable to that found in high end studio equipment. Most processing is done in full 56-bit, double precision mode, resulting in very good low level signal performance. The ADAU1401 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.

ADAU1401 programs can be loaded on power-up either from a serial EEPROM through its own self-boot mechanism or from an external microcontroller. On power-down, the current state of the parameters can be written back to the EEPROM from the ADAU1401 to be recalled the next time the program is run.

Two Σ-Δ ADCs and four Σ-Δ DACs provide a 98.5 dB analog input to analog output dynamic. Each ADC has a THD + N of −83 dB, and each DAC has a THD + N of −90 dB. Digital input and output ports allow a glueless connection to additional ADCs and DACs. The ADAU1401 communicates through an I2C® bus or a 4-wire SPI port.

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)
  • Data Sheet, Rev. A, 4/08

    Product Lifecycle icon-not-recommended Not Recommended for New Designs

    This designates products ADI does not recommend broadly for new designs.

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    ADAU1401 Discussions

    connect adau1401 to computer
    6 week(s) ago in SigmaDSP Processors and SigmaStudio Development Tool
    ADAU1401 selfboot, reconfiguring EEPROM
    25 week(s) ago in SigmaDSP Processors and SigmaStudio Development Tool
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    Evaluation Boards Pricing displayed is based on 1-piece.
    Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.