Wolfson WM2002立体声耳机驱动解决方案

Wolfson 公司的WM2002是采用Wolfson myZoneTM环境噪音消（ANC）除技术的立体声耳机驱动器，可采用单端或BTL输出配置，支持模拟播放或语音输入，模拟或数字麦克风。WM2002集成了功率管理，包括DC/DC转换器，电荷泵和LDO稳压器，采用单节AAA电池供电。环境噪音可降低25dB(典型值),降噪带宽(40Hz -4kHz) ，BTL驱动的THD+N可达-80dB。主要用在带ANC的手机，耳机以及蓝牙单声道/立体声手机。本文介绍了WM2002主要特性，方框图，典型应用框图以及推荐外接元件数值和DC1升压转换器和电荷泵外接元件数值。

Stereo Headphone Driver with Wolfson myZoneTM Ambient Noise Cancellation

The WM2002 is a low power, high quality stereo headphone driver, delivering Wolfson’s patented myZoneTM ambient noise cancellation in a single-ended or BTL (bridge-tied-load) output configuration. The WM2002 supports analogue playback or voice input, and analogue or digital microphone inputs for noisemonitoring microphones.

Designed for embedded applications or incorporated within a stand-alone headset or headphone, the Wolfson myZone™ ANC noise cancellation engine performs ambient noise cancellation during a voice call or during music playback.

The ambient noise input is supported via single-ended or differential analogue microphone interfaces; digital microphone input is also supported. Up to 10 noise input microphones can be supported at once.
..

查看全文