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  4. ADAU1787


Features and Benefits

  • Programmable FastDSP audio processing engine
    • Up to 768 kHz sample rate
    • Biquad filters, limiters, volume controls, mixing
  • 28-bit SigmaDSP audio processing core
    • Visually programmable using SigmaStudio
    • Up to 50 MIPS performance
  • Low latency, 24-bit ADCs and DACs
    • 96 dB SNR (signal through PGA and ADC with A-weighted filter)
    • 105 dB combined SNR (signal through DAC and headphone with A-weighted filter)
  • Serial port fSYNC frequency from 8 kHz to 768 kHz
  • 5 μs group delay (fS = 768 kHz) analog in to analog out with FastDSP bypass (zero instructions)
  • 4 single-ended analog inputs, configurable as microphone or line inputs
  • 8 digital microphone inputs
  • 2 analog differential audio outputs, configurable as either line output or headphone driver
  • PLL supporting any input clock rate from 30 kHz to 27 MHz
  • Full-duplex, 4-channel ASRCs
  • 2, 16-channel serial audio ports supporting I2S, left justified, or up to TDM16
  • 8 interpolators and 8 decimators with flexible routing
  • Power supplies
    • Analog AVDD at 1.8 V typical
    • Digital I/O IOVDD at 1.1 V to 1.98 V
    • Digital DVDD at 0.9 V typical
  • Low power (11.079 mW for typical stereo ANC settings)
  • I2C and SPI control interfaces, self boot from I2C EEPROM
  • Flexible GPIO
  • 42-ball, 0.35 mm pitch, 2.695 mm × 2.320 mm WLCSP

Product Details

The ADAU1787 is a codec with four inputs and two outputs that incorporates two digital signal processors (DSPs). The path from the analog input to the DSP core to the analog output is optimized for low latency and is ideal for noise cancelling headsets. With the addition of just a few passive components, the ADAU1787 provides a complete headset solution.

Note that throughout the data sheet, multifunction pins, such as BCLK_0/MP1, are referred to either by the entire pin name or by a single function of the pin, for example, BCLK_0, when only that function is relevant.


  • Noise cancelling handsets, headsets, and headphones
  • Bluetooth ANC handsets, headsets, and headphones
  • Personal navigation devices
  • Digital still and video cameras
  • Musical instrument effect processors
  • Multimedia speaker systems
  • Smartphones

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
ADAU1787BCBZRL Material Declaration Reliability Data 42-Ball WLCSP (2.695mm x 2.320mm x 0.47mm)
ADAU1787BCBZRL7 Material Declaration Reliability Data 42-Ball WLCSP (2.695mm x 2.320mm x 0.47mm)
Wafer Fabrication Data

Support & Discussions

ADAU1787 Discussions

RE: ADAU1787 EVB I2S in & out non-reasonable
15 week(s) ago in SigmaDSP Processors & SigmaStudio Dev. Tool
RE: ADAU1452 suitable SPI EEPROMs
15 week(s) ago in SigmaDSP Processors & SigmaStudio Dev. Tool

Sample & Buy

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Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

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.