The circuit shown below has two MOSFETs. The input signal is presented to the gate of Q1. Q2 is configured as the two-terminal device that you explored in exercise S10E2. Here, Q2, with its gate connected to its drain, is used as a replacement for the load resistor in a common-source amplifier.

Assume that the MOSFETs are identical, with parameters K and VT. Note that it is hard to get close to identical transistors if they are discrete components, but one can get pretty good matched pairs on an integrated circuit chip.
We want to set the input bias VIN high enough to keep Q1 out of cutoff

Question

The circuit shown below has two MOSFETs. The input signal is presented to the gate of Q1. Q2 is configured as the two-terminal device that you explored in exercise S10E2. Here, Q2, with its gate connected to its drain, is used as a replacement for the load resistor in a common-source amplifier.

Assume that the MOSFETs are identical, with parameters K and VT. Note that it is hard to get close to identical transistors if they are discrete components, but one can get pretty good matched pairs on an integrated circuit chip.
We want to set the input bias VIN high enough to keep Q1 out of cutoff