AKM AK4203立体声线路和视频放大器解决方案

AKM 公司的AK4203是立体声无电容线路放大器和视频放大器,具有内置的电荷泵电路,采用单个3.3V电源,可得到2Vrms输出,并具有极好的线性度.音频放大器的THD+N为 -90dB, S/N为102dB,视频放大器的S/N为75dB(typ),放大器增益为+6dB.本文介绍了AK4203主要特性,方框图,典型连接图,评估板AKD4203-A功能和方框图,以及电路图和元件布局图.

Stereo Cap-less LINE-Amp and Video-Amp

The AK4203 is an audio stereo cap-less line driver with 1-channel video driver. It eliminates the need for large DC-blocking capacitors with a built-in Charge-pump circuit. The AK4203 achieves 2Vrms outputs with excellent linearity 2Vrms output by single 3.3V power supply. The AK4203 is available in small 16-pin TSSOP, saving the system space and cost.

AK4203主要特性:

Audio Line-Amp

􀂆 Differential Input

􀂆 Stereo Cap-less Amplifier (No DC-blocking capacitors required)

􀂆 Line-Out level: 2.0Vrms

􀂆 THD+N: -90dB

􀂆 S/N: 102dB

􀂆 Output gain: 6dB

􀂆 Low-pass Filter: fc= 130kHz

􀂆 Pop Noise Free Ground-referenced Output Video Amp

􀂆 1ch Stereo Cap-less Amplifier (No DC-blocking capacitors required)

􀂆 Integrated Video Amplifier (+6dB)

􀂆 Input Level: 1.5Vpp (max)
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