A Substrate Current Model for Analog CMOS Circuit Simulations

Kwang Sub YOON  Jong Kug SEON  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E78-A   No.12   pp.1799-1804
Publication Date: 1995/12/25
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
substrate current model,  SPICE,  accurate,  computationally efficient,  

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This paper presents an accurate and semi-physical MOSFET substrate current model suitable for analog circuit simulations. The proposed model is valid over a wide range of the electric field present in MOSFET devices and is continuous from cut off region to saturation region. The developed model was implemented into the circuit simulator, SPICE3. Benchmark of the developed model was achieved by making comparisons between the measured data and the simulated data for MOSFET devices, push-pull CMOS inverters, a regulated cascode CMOS operational amplifier. The experimental results showed that the developed model was more accurate and computationally efficient than the conventional models.