cjupiter
Member level 2
overdrive voltages
I am following the design example for a folded cascode amplifier in Razavi's book. The opamp design incorporates high drain currents (1.5mA). However in my design i would like to use a 200uA current reference. This decreases my W/L ratios to unreasonable values. Should I choose smaller overdrive voltages to maintain high W/L ratios? . Im using a 3.3V power supply.
I am following the design example for a folded cascode amplifier in Razavi's book. The opamp design incorporates high drain currents (1.5mA). However in my design i would like to use a 200uA current reference. This decreases my W/L ratios to unreasonable values. Should I choose smaller overdrive voltages to maintain high W/L ratios? . Im using a 3.3V power supply.