Variable Sample Rate, 8-Channel D/A Converter with Volume Control

The WM8768 is a multi-channel audio digital/analog converter (DAC) featuring four stereo, multi-bit Delta Sigma DACs with oversampling digital interpolation filters. The WM8768 supports data input from 16 to 32-bits and sampling rates from 8 kHz to 192 kHz. Each DAC channel has independent digital volume and mute control and the audio data interface supports I²S, left justified, right justified and DSP digital audio formats. Control is by either a 3-wire serial interface or directly using the hardware interface that provide access to channel selection, volume controls, mutes, de-emphasis and power management facilities.


  • Three-wire SPI serial or hardware control interface
  • Programmable audio data interface modes
  • Data formats: I²S, left or right justified, DSP
  • Four independent stereo DAC outputs with independent digital volume controls
  • Master or slave audio data interface

Parametric Specifications

Channel(s) Out 8
Resolution (bits) 24
Dynamic Range (dB) 103
THD+N (dB) -90
Sample Rate (kHz) 192
Analog Power Supply (V) 2.7-5.5
Supply Current (µA) 2.7-3.6
Output Level (Vrms) 1
Package 28 SSOP

Technical Documents

WM8768 Product Datasheet

Jul 1, 2010, v4.3 : 404 Kb


Comprehensive Solutions