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output of amplifier when it is connected to peak detector

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matin-kh

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Hello,

I have an amplifier which its output is shown below:
pa.output.jpg

I use a peak detector to detect the amplitude of the output of amplifier which its circuit is like this:
pd.jpg

I have a problem when I connect the output of amplifier to the peak detector the output of amplifier would be like this:
pa.output.pd.jpg

as you see the amplitude of out- is higher than out+ and it damage the output of peak detector i can't understand the reason with sin source the power detector don't act like this and every thing is ok, do you know what is the problem?
 

There's obviously a circuit asymmetry that can't be seen on your schematics. You better show the complete circuit.
 
the peak detector is shown below, don't pay attention to ref.level shifter:
1.jpg

and my amplifier is 3 stage of the circuit below:
2.jpg

thanks a lot :)
 

O.K. No reason for asymmetry in the schematic. May be crosstalk or asymmetrical load.
 
Your schematic uses what look like current sources. A current source will generate any voltage necessary to push its specified ampere value.

It will even generate a very high voltage. Could that be the cause of your odd readings?
 
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