For static circuitry, small-signal analysis such as AC or NOISE can be used to analyze them and understand their performance in terms of small signal input and noise stuff after giving the DC operating point. The operating point is found by solving the nonlinear device equations for the steady-state of the circuit with large signals, at DC analysis, and then the nonlinear elements are linearized.
However, for dynamic one such switched-cap circuit, the circuitry is working using clock signals. They can't provide a DC operating point since the circuit requires the clock signal to be active to have a steady state. PSS (periodic steady state) analysis of cadence spectreRF could linearize the network at a periodic operating point and PNOISE (periodic noise) can conduct noise analysis on this periodic operating point.
No comments:
Post a Comment