Ultra Small D/A Converter with Headphone Driver

The WM8711BL is an ultra-small, low power stereo digital/analog converter (DAC) with integrated headphone driver for systems using hi-fi stereo playback. Stereo audio outputs are buffered for driving headphones from a programmable volume control, and line level outputs are provided along with anti-thump mute and power up/down circuitry. Stereo 24-bit multi-bit Delta Sigma DACs are used with oversampling digital interpolation filters. Audio data input ranges from 16 to 32-bits and sampling rates from 8 kHz to 96 kHz. A USB clocking mode is provided where all audio rates can be derived from a single 12M Hz or 24 MHz MCLK, saving on the need for a PLL or multiple crystals. The device is controlled via a 2 or 3 wire serial interface and provides access to features including volume controls, mutes, de-emphasis and extensive power management facilities.

Features

  • Two or three wire MPU serial control interface
  • Programmable audio data interface modes
    • I²S, left or right justified, DSP
    • Master or slave clocking mode
  • Stereo audio outputs
  • Output volume and mute controls
  • Highly efficient headphone driver

Parametric Specifications

Channel(s) Out 2
Resolution (bits) 24
Dynamic Range (dB) 90
THD+N (dB) -86
Sample Rate (kHz) 96
Analog Power Supply (V) 1.8-3.6
Supply Current (µA) 1.42-3.6
Output Level (Vrms) 1
Package 24 QFN

Technical Documents

WM8711BL Product Datasheet

Dec 1, 2011, v4.2 : 374 Kb

WM8711BL-6061 FL24 M Example Configurations

Mar 1, 2008, v1.0 : 2800 Kb

WM8711BL-6061-FL24-M Schematic and Layout

Jan 1, 2008, v1.0 : 2000 Kb

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