Hi Everyone,
I am a student studying microelectronics at uni this semester and am new to this forum. There is a question about biasing a common source stage using a constant current source that I want to ask.
Please the below for the circuit diagram.
I was using Hspice to simulate my circuit. However, I found that without giving a DC bias voltage to M1, it would remain in Linear despite the fact that M2 was providing a constant current to it. I also found that vds of M1 is extremely low. How does constant current biasing work? Do we still need to provide Vin with a DC component when biasing the circuit using a constant current? Would anyone please help me get this concept clarified?
Thank you very much
Kenny
I am a student studying microelectronics at uni this semester and am new to this forum. There is a question about biasing a common source stage using a constant current source that I want to ask.
Please the below for the circuit diagram.
I was using Hspice to simulate my circuit. However, I found that without giving a DC bias voltage to M1, it would remain in Linear despite the fact that M2 was providing a constant current to it. I also found that vds of M1 is extremely low. How does constant current biasing work? Do we still need to provide Vin with a DC component when biasing the circuit using a constant current? Would anyone please help me get this concept clarified?
Thank you very much
Kenny