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how to do ideal bias voltage for CMOS circuits??

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wael_wael

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Hi everybody,


how to do ideal bias voltage for CMOS circuits??

thanx
 

it is by maintaining your MOSs in the region of operation you want.... but current source biasing is better for MOS devices...
 

ok, i am try to bias my OTA without bias circuit, could you help me to that
thanx
 

for these kind of applications current mirror is the best way.... please post your proceeding in that particular ota....
 

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    wael_wael

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A.Anand Srinivasan said:
for these kind of applications current mirror is the best way.... please post your proceeding in that particular ota....
Click to expand...
fully differential folded cascode OTA
 

take a unit bias current which is usually generated from a bandgap, then use this current to generate all the bias currents and bias voltages.Always look in terms of bias currents and not voltages.When i say this i mean, try to flow a particular value of current which you intend and then keep scaling the size to achieve minimum overdrive.


amarnath
 

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    wael_wael

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i agree with amarnath.... that is what is usually done in CMOS circuits.... it is where we can bias a circuit to a particular region of operation using current....
I'll try and post whatever i can on ota circuits....

Regards
Anand.
 

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    wael_wael

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You can use bandgap reference circuits for stable temperature compensated output voltage
 

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    wael_wael

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