Title :
A model for delay evaluation of a CMOS inverter
Author :
Vemuru, Srinivasa R ; Thorbjornsen, Arthur R.
Author_Institution :
Dept. of Electr. Eng., Toledo Univ., OH, USA
Abstract :
A model is proposed for computing the propagation delay of a CMOS inverter. The model takes into account the shape of the input waveform, the capacitive load, and the transconductances of the PMOS and NMOS transistors. The model uses either an analytical solution or a power series approximate solution for the differential equations that govern the behavior of the inverter. Regression equations are developed for the times spent in different regions of operation. The equations help in improving the speed of the program
Keywords :
CMOS integrated circuits; insulated gate field effect transistors; invertors; semiconductor device models; CMOS inverter; NMOS transistors; PMOS transistors; analytical solution; capacitive load; delay evaluation; differential equations; input waveform; power series approximate solution; propagation delay; regression equations; transconductances; Capacitance; Delay; Differential equations; Inverters; MOS devices; MOSFETs; Nonlinear equations; Region 1; Semiconductor device modeling; Voltage;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.111920
