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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
 

A.Anand Srinivasan

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

wael_wael

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

A.Anand Srinivasan

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

    wael_wael

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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....
fully differential folded cascode OTA
 

amarnath

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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
 

    wael_wael

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A.Anand Srinivasan

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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.
 

    wael_wael

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analog_prodigy

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

    wael_wael

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