Title :
A CMOS inverter model for propagation delay evaluation
Author :
Vemuru, Srinivasa R ; Thorbjornsen, Arthur R.
Author_Institution :
Dept. of Electr. Eng., Toledo Univ., OH, USA
Abstract :
A model for the propagation delay and rise (fall) times of an inverter is discussed. The model is based on the approximate analysis of the differential equations that govern the behavior of the inverter. The slopes of the input waveform along with the currents of the pMOS (nMOS) transistor in the falling (rising) outputs are included in the model. Simulations are made using the model for different values of transconductances of transistors, loads, and rise (fall) times. These simulations are compared to the results of SPICE simulations
Keywords :
CMOS integrated circuits; circuit analysis computing; delays; integrated logic circuits; logic CAD; semiconductor device models; CMOS inverter model; approximate analysis; differential equations; fall time; propagation delay evaluation; rise time; transconductances; Differential equations; Inverters; MOS devices; MOSFETs; Propagation delay; Region 2; Region 3; SPICE; Semiconductor device modeling; Threshold voltage;
Conference_Titel :
Circuits and Systems, 1989., Proceedings of the 32nd Midwest Symposium on
Conference_Location :
Champaign, IL
DOI :
10.1109/MWSCAS.1989.101916
