Features and Benefits

  • Programmable FastDSP audio processing engine
    • Up to 768 kHz sample rate
    • Biquad filters, limiters, volume controls, mixing
  • Low latency, 24-bit ADCs and DAC
    • 106 dB SNR (signal through ADC with A-weighted filter)
    • 110 dB combined SNR (signal through DAC and headphone with A-weighted filter)
  • Serial port sample rates from 8 kHz to 768 kHz
  • 5 μs analog-to-analog group delay
  • Programmable, double precision MAC engine for 13-stage equalizer
  • 3 analog inputs (2 differential and 1 single-ended), configurable as microphone or line inputs
  • Analog differential audio output, configurable as either line output or headphone driver
  • PLL supporting any input clock rate from 30 kHz to 27 MHz
  • 1-channel ASRCI, 3-channel ASRCO
  • Serial audio ports supporting I2S, left justified, or up to 16-channel TDM (TDM16)
  • 2 interpolators and 4 decimators with flexible routing
  • Power supplies
    • Analog AVDD at 1.8 V
    • Digital I/O IOVDD at 1.8 V to 3.3 V
    • Headphone HPVDD at 1.8 V
    • Headphone HPVDD_L at 1.2 V to1.8 V
  • Control/communication interfaces
    • I2C, SPI, or UART
  • 28-ball, 0.4 mm pitch, 2.957 mm × 1.757 mm WLCSP

Product Details

The ADAU1850 is a codec with three inputs and one output that incorporates one digital signal processor. The path from the analog input to the DSP core to the analog output is optimized for low latency and is ideal for noise canceling earphones. With the addition of a few passive components, the ADAU1850 provides a complete headset solution.

The ADAU1850 is provided in a small, 28-ball, 2.957 mm × 1.757 mm wafer level chip scale package (WLCSP).


  • Noise canceling handsets, headsets, and headphones
  • Bluetooth active noise canceling (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)

Software & Systems Requirements

Software Modules

125.06 M

Lark Studio (Rev. 2.4.1)

Lark Studio is a standalone Windows Graphical User Interface (GUI) tool for programing and tuning software on the Lark/Lark-Lite/SSM6515. Lark Studio includes intuitively reading/writing control registers, and providing a drag and drop interface for user to design FastDSP schematic, which can be downloaded to the target directly. It also supports safe loading, generating C source files, calculating tables of filter coefficients and visualizing filter magnitude & phase response. It also supports EQ configuration, along with calculating tables of filter coefficients and visualizing filter magnitude & phase response, generating C source files, and download to the target.
4.59 M

Lark SDK Setup (Rev. 3.2.2)

Lark SDK is embedded firmware package, including driver for all hardware modules of ADAU1860 and ADAU1850. It is delivered in source code format and also featured by log support, friendly high level APIs, etc.

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.

PCN-PDN Information

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.