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opamp'problem in the sc network (Read 3980 times)
alice_alice_nc
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opamp'problem in the sc network
Apr 07th, 2004, 6:39pm
 
KEN:
     I want to ask  you another question about that
there is DC problem in the opamp enbeded in the sc network , the output DC of the opamp is 600m or so ,so it affected the ac characteristic .
    How I can solve the problem of the output  dc ?
    If I used the big capacitor ,I can remove the 600mV ' dc, but I can not used so large capacitor.
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Mighty Mouse
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Re: opamp'problem in the sc network
Reply #1 - Apr 7th, 2004, 8:15pm
 
Alice,
What is causing the 600mV DC offset?

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alice_alice_nc
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Re: opamp'problem in the sc network
Reply #2 - Apr 8th, 2004, 12:57am
 
The  architecture of the opamp is a one stage folded  cascoded opamp ,pmos input , and the output is from the four transistor,so there is 600mv dc problem .
     
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