switch-cap integrator's output is so high,

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Ayman Essam

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Hi
my opamp's open loop gain is above 60 dB's, and the In/out common-mode voltages are stable in the mid-scale of VDD, but the output differential of the integrator is very close to VDD !!! any help with that ?
 

What's the test circuit? Did you notice that an integrator can't achieve a stable output bias without external negative feedback?
 

FvM said:
What's the test circuit? Did you notice that an integrator can't achieve a stable output bias without external negative feedback?
Click to expand...

I am using switch-cap circuit
 

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