Functional-level analog macromodeling with piecewise linear signals [analog amplifier]

In this paper an analog network macromodeling technique is presented. It is oriented towards a functional-level simulation of both analog and analog-digital networks. The signals are assumed to be piecewise linear (PWL) waveforms. A class of nonlinear inertial building blocks is introduced for modeling. The proposed macromodels are accurate in sense of a timing behavior and computationally efficient, since an explicit algorithm to obtain the waveforms is used. It is based on a PWL approximation of original smooth timing responses. Practical macromodels of particular functional units are discussed. A functional-level macromodel of analog amplifier is derived in detail and its performance is shown based on SPICE estimates