MIC5557 into integrator op amp

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Gibson486

Joined Jul 20, 2012
355
I have an MIC1557 chip going into an integrator opamp. The issue I am having is that the output of the integrator makes a triangle wave like I want it to, however, it jitters a lot (the whole wave just keeps shifting up and down). Yes, there is a coupling cap between the 557 and the integrator. My frequency is approx 250khz. What could the issue be?
 

kdillinger

Joined Jul 26, 2009
141
Your scope probe is not connected to ground. Common issue to see a waveform move up and down on the scope. A tell tale sign is the frequency of this movement is 60Hz.
 
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