A mixed-mode analog-digital simulation methodology for full custom designs

Abstract

In this paper, we present one solution to the problem of mixed-mode analog/digital simulation for full custom designs. By efficiently incorporating two specialized simulators --a circuit simulator and a switch-level simulator --in a single computing environment with a common user-interface, we have succeeded in simulating full-custom circuits with tightly coupled feedback between the analog and digital portions. Our proposed methodology can also be applied to a mixedmode simulation of a purely digital or purely analog circuit in which one portion requires a much higher order of accuracy than the other.

Mixed-Mode Simulation and Analog Multilevel Simulation

“…As programs is to replace the X state by (V OH + V OL)/2 volts [LEE88]. As programs is to replace the X state by (V OH + V OL)/2 volts [LEE88].…”

An efficient logic/circuit mixed-mode simulator for analysis of power supply voltage fluctuation

“…Recently reported glued mixed-mode simulators use a loosely coupled circuit simulator and logic simulator. The circuit simulator is used to precisely analyze the critical path of digital circuits or the analog portion of analog-digital mixed circuits, and the logic simulator is used to roughly analyze the rest of the circuit where precision is less important [3][4][5][6][7].…”