This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

关于430PWM滤波后噪声大的问题

Other Parts Discussed in Thread: MSP430F5529

我希望用pwm滤波实现dac的功能。请问为什么我用4阶RC滤波之后,总会有如图所示的一个叠加噪声,怎么一直滤不掉。

我用的是msp430f5529,时钟频率设置25MHz,会不会是因为时钟的噪声干扰?

请问该如何才能去掉这种噪声呢?感谢解答。