give me idea to solve voltage bias telescopic opamp

Discussion in 'Homework Help' started by tel_amp lady, Aug 22, 2009.

  1. tel_amp lady

    Thread Starter New Member

    Aug 20, 2009
    hye all...
    i hv problem with designing telescopic opamp..i need to design d transistor to be all in saturation,but currently only transistor M11 and M5 and M6 are enter saturation region and all in linear there any other way i can solve this problem..coz all d calculation i do is from behad ravavi book...but when i implement it, it not d same...i attached the calculation for voltage bias and the circuit design

    circuit design :

    The minimum allowable input common mode level equation
    VIN(min)= V_GS1+V_OD9= V_TH1+V_OD1+V_OD9
    The bias voltage for V_B1
    The bias voltage for V_B2
    The bias voltage for V_B3