Features and Benefits

  • Built-in sound engine for audio processing
    Wind noise reduction filter
    Enhanced Stereo Capture (ESC)
    Dual-band automatic level control (ALC)
    6-band equalizer, including notch filter
  • 24-bit stereo audio ADC and DAC
  • 400 mW speaker amplifier (into 8 Ω load)
  • Stereo digital microphone input pulse-density modulation (PDM)
  • PLL supporting a range of input clock rates
  • Stereo line output
  • Stereo pseudo-differential microphone input

Product Details

The ADAU1381 is a low-power, 24-bit stereo audio codec. The stereo audio DAC supports sample rates from 8 kHz to 96 kHz, a digital volume control, and a programmable digital filter. The stereo audio ADC supports sample rates 8 kHz to 96 kHz and a programmable digital volume control. The ADAU1381 is ideal for battery-powered audio applications.

The record path includes two digital stereo microphone inputs and an analog stereo input path. The analog inputs can be configured for either a pseudo-differential or a single-ended stereo source. Additionally, there is a dedicated analog beep input signal path that can be mixed into any output. The ADAU1381 includes a stereo line output and speaker driver, which makes the device capable of supporting dynamic speakers.

The serial control bus supports the I2C or SPI protocols, and the serial audio bus is programmable for I2S, left-justified, right-justified, or TDM mode. A programmable PLL supports flexible clock generation for all standard rates and available master clocks from 8 MHz to 27 MHz.


  • Digital still cameras
  • Digital video cameras

Product Lifecycle icon-recommended Last Time Buy

All products in this family will be obsolete soon. Please contact ADI Sales or Distributors to arrange for final purchases and read our Obsolescence Information to review the time periods for placing final orders and receiving final shipments.

Evaluation Kits (2)

Software & Systems Requirements

Product Recommendations

ADAU1381 Companion Parts

Recommended Analog Output Microphones

Recommended Digital Output Microphones

  • For low cost, low power, PDM (Pulse Digital Modulated) output: ADMP421, ADMP521.

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


ADAU1381 Discussions

RE: ADAU1381 & I2C communication
18 week(s) ago in Audio
RE: ADAU1381 Audio Detect ?
18 week(s) ago in SigmaDSP Processors and SigmaStudio Development Tool
RE: ADAU1381 eval board setup
18 week(s) ago in Audio
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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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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.