TLV320AIC3204 1L,1R差分输入,用示波器看波形正常为正弦波,相位相差180度。
但是数据输出的波形如下
:
缩小信号幅度或者放大幅度都是一样现象。且频率也不对。检查了MCLK=12.88M,FS=48K正常
参考的是:“Stereo ADC with 48ksps Sample Rate and Low Power”
1L,1R接R_ADC,2L,2R接L_ADC,CM=0.9v 硬件连接如下:
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TLV320AIC3204 1L,1R差分输入,用示波器看波形正常为正弦波,相位相差180度。
但是数据输出的波形如下
:
缩小信号幅度或者放大幅度都是一样现象。且频率也不对。检查了MCLK=12.88M,FS=48K正常
参考的是:“Stereo ADC with 48ksps Sample Rate and Low Power”
1L,1R接R_ADC,2L,2R接L_ADC,CM=0.9v 硬件连接如下: