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How to reduce Vpp of PWM generated from PIC microcontroller

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hridz

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Hi Guys,

I have generated some PWM from PIC microcontroller using my input data. Now i want to know how to reduce the peak to peak output voltage of the PWM, presently it is coming very high around 600mv but i want this value around some 100mv. so can anybody help me in this regard.

hridz
 
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Cant help you unless you define the spectral distribution of the noise and source. Is your scope probe grounded with a close short gnd? Is it from an inductive load?
Do you have low ESR Caps?
 

could you post your circuit? or your output filter calcs
 

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