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Tutorials for designing a Folded cascode OTA

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student153

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Hi,
I have no experience in layouting but i need to layout my first design which is Folded cascode ota. Can anybody provide any tutorial where i can find step by step explained layout of any kind of analog circuit. I looked in Hastings book but problem is he just focuses on making individual devices better not on building whole system.
Any kind of help will be highly appreciated.
 

Re: OPAMP Layout

Hi,

check these links regarding some sort of design help for ota,

folded cascode example

https://www.doe.carleton.ca/~cp/analog/foldn.html

serch google for Cascode BJT Circuit


[help]Design issues on two stage foled cascode OTA



Opamp Design Tutorial



Difference between OTA and Opamp



designing folded cascode OTA



Analog circuit design flow



Help needed about fully folded cascode OTA with PMOS input
 
Re: OPAMP Layout

for your information
 

Re: OPAMP Layout

prcken said:
for your information
Click to expand...
Those pictures are not visible. Could to tell me where did you get those.
 

OPAMP Layout

sorry for vaguely viewed pictures, i think you can not read the names of the mosfets in schematic, but layout is ok, right?
it placed as following according to the schematic:

MP5 MP3 MP4
MP1 MP2 MP3C MP4C
MN1C MN2C
MN5 MN6
i got it from a printed material of 3-day IC layout training course. those pictures are taken with the camera of my cellphone, so not clearly seen.
 
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