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WM8281

Low-Power Smart Codec with Echo Cancellation
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WM8281 Overview

The WM8281 is a highly integrated low-power audio system that combines an advanced DSP feature set with a flexible, high-performance codec. The programmable DSP cores support advanced audio features, including multi-mic wideband noise reduction, high-performance acoustic echo cancellation (AEC), speech enhancement, advanced media enhancement, and many more.

CIRRUS®
CIRRUS ROCKS®
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INNOVATION THAT ROCKS®

Product Features

  • 600 MIPS, 600 MMC multi-core audio-signal processor

  • Programmable wideband, multi-mic audio processing

  • Multi-channel asynchronous sample rate conversion

  • Integrated 6/8 channel 24-bit hi-fi audio codec

  • Analog and digital microphone inputs

  • Multi-purpose headphone / earpiece / line output drivers

  • Stereo Class D speaker output drivers

  • Four-channel digital speaker (PDM) interface

  • SLIMbus audio and control interface

  • 3 full digital audio interfaces

  • Flexible clocking interface

  • Advanced accessory detection feature

  • Configurable functions on GPIO pins

  • Integrated LDO regulators and charge pumps

  • Small WLCSP package, 0.4mm pitch

Parametric Specifications

Analog Input TypeSingle-ended; Differential
Analog Output TypeSingle-ended; Differential
Channels In6
Channels Out12
Control InterfaceSPI/I²C
ADC Dynamic Range (dB)100
DAC Dynamic Range (dB)115
ADC THD+N (dB)-88
DAC THD+N (dB)-90
Sample Rate (kHz)8-192
Analog Power Supply (V)1.8
Digital Power Supply (V)1.2; 1.8-3.6
Logic Power Supply (V)1.8-3.3
Power Consumption (mW)4.1-1568
DSP IncludedYes
Features4 cores, 600 MIPS, 784kB memory, 3 Headphone/Earpiece Output/Line outputs, Stereo Speaker output, SLimbus, digital audio, SPI and I²C interfaces, Multiple GPIO pins
Package138 WLCSP

Design Resources

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Evaluation Boards

  • WM8281 Evaluation Board (CDBWM8281-M-2)

    Order Sample
  • CDB6271-2 (Lochnagar 2)

    CDB6271-2 (Lochnagar 2)

    Cirrus Logic’s CDB6271-2 ('Lochnagar 2') is an evaluation and development platform with support for interchangeable daughter cards. It is designed to provide a variety of audio inputs and outputs to Cirrus Logic devices and to allow for configuring and programming them in a variety of possible use cases. The CDB6271-2 is designed to operate with the WISCE™ Development Tools Suite, which is a prerequisite for use of the board. The CDB6271-2 ('Lochnagar 2') support can be added to WISCE by installing the Device Pack, which also installs the necessary audio and communication drivers.

    Order SampleUser Guide

Software Packages

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