Title :
EMC macro-modeling of CMOS inverter using LECCS-I/O model with additional current source
Author :
Iokibe, Kengo ; Ohsaki, Akihiro ; Toyota, Yoshitaka ; Koga, Ryuji ; Wada, Osami
Author_Institution :
Grad. Sch. of Natural Sci. & Technol., Okayama Univ., Tsushimanaka
Abstract :
The authors investigated an EMC macro-model of the CMOS logic inverter gate, named LECCS-I/O that consists of linear equivalent circuit and current sources. This paper modifies the macro-model by adding another current source to express the short-circuit current in the inverter. The macro-model was determined from SPICE calculations of impedance and power current by using a device model of an inverter IC. The modified model was tested with several load capacitances in SPICE simulation. The results showed that the macro-model predicts the power current with good accuracy in the range up to 3 GHz except for frequencies at which inductances of the package and of traces on printed circuit board and capacitance of the load caused resonances.
Keywords :
CMOS logic circuits; constant current sources; equivalent circuits; integrated circuit modelling; invertors; logic gates; printed circuits; short-circuit currents; CMOS logic inverter gate; EMC macromodeling; LECCS-I-O model; SPICE calculations; capacitance; current source; impedance; linear equivalent circuit; power current; printed circuit board; short-circuit current; CMOS logic circuits; Capacitance; Circuit testing; Electromagnetic compatibility; Equivalent circuits; Impedance; Integrated circuit modeling; Pulse inverters; SPICE; Semiconductor device modeling;
Conference_Titel :
Electromagnetic Compatibility, 2008. EMC 2008. IEEE International Symposium on
Conference_Location :
Detroit, MI
Print_ISBN :
978-1-4244-1699-8
Electronic_ISBN :
978-1-4244-1698-1
DOI :
10.1109/ISEMC.2008.4652105
