In Example, 5.10, we concluded that the noise of M 2 reaches the output un attenuated if ω is…
In Example, 5.10, we concluded that the noise of M2 reaches the output un attenuated if ω is greater than (R1CX)-1 but much less than gm2/( + CX). Does such a frequency range exist? In other words, under what conditions do we have (R1CX)-1 ? Assume and recall that is the gain of the LNA and CX is on the order of CSG2.
Example 5.10
Assuming ||-1 at frequencies of interest so that the degeneration impedance in the source of M2 reduces to CX, recompute the above transfer function while taking CGS2 into account. Neglect the effect of rO2.
