vca810作为中间级,在宽带直流放大器调试中出现自激现象。在放大信号的时候发现没有,按照pdf上面电路的搭法没有能够实现40dB的增益,在大概25dB的时候出现了自激现象,还有衰减的时候貌似也不给力,衰减20dB时候,波形失真很严重!请问此pdf图是否还有其他的测试条件?
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