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Why there is no body help me ? Is this question too easy or too hard ?
Added after 5 hours 11 minutes:
I still want to discuss this op-amp with someone
Re: an analysis of opamp , need you help
I think there are many people with great design excercise here , but why
no one gave me some clue about my puzzle
Added after 1 hours 48 minutes:
I am waiting for some advices .
Re: an analysis of opamp , need you help
Thanks for your information . But is there someone can give me some
advice about the other questions ?
Added after 21 minutes:
This op amp is a classic real-world circuit , and I think it is worth your
time to analysis .
Added after 3 minutes...
Re: an analysis of opamp , need you help
I am soryy , I didn't give the enough information
Ra ,Re,Rout are the output r of node A ,E ,Out ...
Ra ≈ R1 = 17k
Re= Rf=1meg ( ?? )
Rout = 100k
Gq1=Gq2 =150u
Gq3=Gq4 = 210u
Gp3=0.7m Gn4=0.8m
1. The second stage gain is ...
Hi every one :
I have some questions about the op-amp in the attachment file .
My questions are :
1. What is the gain of every stage
2. What is the polse and zeros
3. How to calculate its slew rate
4. What is the function of N3 P2
5. How to ensure the opamp is stable...
Re: OP-amp compensation
that cap is the decoupling capicator it is not the compensation capicator .
dont know exact role of the cap but i will let u know soon
Hi :
But the capicitor really introduce a pole and maybe it change the location
of the other poles . In fact at high frequency...
Hi every one :
I found in a op-amp there is a capicitor in the first stage connected
between the VDD and one of the differential output . I think this capicitor
is for compensation purpose . But I don't know how to calculate the
pole of this capicitor and how this capictor effect the other...
Hi every one :
I saw that many op-amp's input stage have a capicitor connected between
one of the differential output and VDD (see the below graph.) Besides this
capicitor , there are other Miller capicitors in the op-amp ,for example capicitor
connected between the output and the other...
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