AKM AK4710低功耗SCART音频驱动方案

KM公司的AK4710是从外接音频DAC连接的单端或差分输入的音频子系数,集成了音量控制,增益范围从-6dB 到+24dB.器件包括限幅电路,视频滤波器,视频开关和75欧姆线路驱动器.主要用在数字STB和蓝光播放器.本文介绍了AK4710主要特性,典型连接图和评估板AKD4710功能,方框图以及电路图和元件布局图.

The AK4710/11’audio block accepts either single-ended or differential input from an external audio DAC. It is very flexible, with integrated volume controls that range from -6dB to +24dB for gain control. The video block includes a clamp circuit, video filters, video switches and a 75-ohm video line driver, realizing simple and low cost system construction

The AK4710/11 supports fast and slow video blanking, compatible with the European SCART standard, making the AK4710/11 ideal for a full spectrum of European digital AV products. The AK4710 is housed in a 32-pin QFN package, and the AK4711 is housed in a 36-pin QFN package.

AK4710主要特性:

Audio section

􀂆 THD+N: −92dB (@2Vrms)

􀂆 Dynamic Range: 96dB (@2Vrms, A-weighted)

􀂆 Full Differential or Single-ended input for Decoder DAC

􀂆 Stereo Output for TV SCART and CINCH (2Vrms)

􀂆 Ground-Referenced Output Eliminates

DC-Blocking Capacitor and Mute Circuit
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