jithin
Newbie level 4
hi
i would like to design a five stage ring oscillator using CMOS differential amplifier by cascading .But the problem exist is when the differential output voltage is Vdd then at this point the load pmos transistor(which is controlled by a contolling voltage) will enter into the saturation stage but we are trying to model it as a resistor to obtain a good tuning range.
so please help me to design the differential circuit.
i would like to design a five stage ring oscillator using CMOS differential amplifier by cascading .But the problem exist is when the differential output voltage is Vdd then at this point the load pmos transistor(which is controlled by a contolling voltage) will enter into the saturation stage but we are trying to model it as a resistor to obtain a good tuning range.
so please help me to design the differential circuit.