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msp430G2553 adc测量双电源电路

Other Parts Discussed in Thread: MSP430G2553

我用msp430G2553的adc直接采样双电源电路的输出值。

双电源电路通过一个放大器输出偏置为0的正弦波。我用430的adc引脚直接接上这个输出。

如果正弦波幅值较小,就会出现半波。

但是如果正弦波幅值较大时,在半波本该为零的地方出现高频的震荡。