LA4440立体声功放 LA4440 is a two channel audio power amplifier IC with inbuilt in dual channels enables it for stereo and bridge amplifier applications. In dual mode it gives 6 W per channel and in bridge mode 19 W output. It has good ripple rejection of 46dB, small residual noise, built in over voltage and surge voltage protection etc. ideal feature of the IC is its pin-to-pin protection. Here LA4440 is wired in Stereo configuration using both inputs and outputs. LA4440特点 1. Built in two channels to use as Mono and Stereo 2. Dual mode 6W x 2 and Bridge mode 19W 3. 46 dB Ripple rejection 4. 18V Max. Power handling and 12V typical 5. Good channel separation and low distortion 6. Built in Audio Muting function and Pin-to-Pin protection 7. Surge protection circuitry 图 LA4440立体声功放电路 LA4440引脚图引脚 主要功能 1 负反馈1 2 输入1 3 接地 4 静噪输入 5 纹波滤波 6 输入2 7 负反馈2 8 接地 9 自举2 10 功率输出2 11 电源电压Vcc 12 功率输出1 13 自举1 14 接地