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THS3001仿真与现实的差距太大。

lijun dong
Prodigy 141 points
Other Parts Discussed in Thread: THS3001

今天用ths3001做了个增益为2的放大器，频率只到27kHZ就失真了，输入是vi=565mVpp，在f=20--27KHZ还行，此时vo=1.14vpp

但是信号频率f>27KHZ时就出现底部失真，而且幅度渐渐衰减。附上电路图和pcb截图，求解释，好心烦，对了那个ths3001的Rf是5k精密可调电阻。