your question is beyond vague... what circuit in particular? opamp? lna? oscillator? SCL logic? what are your requirements and constraints? what process are you using? etc..
your question is beyond vague... what circuit in particular? opamp? lna? oscillator? SCL logic? what are your requirements and constraints? what process are you using? etc..
the circuit is comparator.See the the circuit in the attachment. How to determine the vbias? the process technology is 0.35um with 3.3 V supply voltage.