调试tlv320aic33的AGC功能时,发现该AGC幅频特性较差,设定好目标增益,在输入信号幅度相同情况下(比如都输入vpp 500mv),频率越高放大倍数越小,如2khz信号放大到1.5v了,而此时500hz信号已经被放大到截止。实际测试幅频特性不平坦答十多个db,请问你们有遇到过这种情况吗?
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调试tlv320aic33的AGC功能时,发现该AGC幅频特性较差,设定好目标增益,在输入信号幅度相同情况下(比如都输入vpp 500mv),频率越高放大倍数越小,如2khz信号放大到1.5v了,而此时500hz信号已经被放大到截止。实际测试幅频特性不平坦答十多个db,请问你们有遇到过这种情况吗?