Title :
Simple CMOS current-mode exponential function generator circuit
Author :
Kumngern, Montree ; Chanwutitum, Jirasak ; Dejhan, Kobchai
Author_Institution :
Fac. of Eng. & Res. Center for Commun. & Inf. Technol., King Mongkut´´s Inst. of Technol. Ladkrabang, Bangkok
Abstract :
A low-power and low-voltage simple CMOS exponential function generator circuit is proposed. It is based on simple current mirrors able to operate at low supply voltage. The design of the circuit is based on Taylor series expression for realizing the exponential characteristic and of MOS transistor operating in the saturation region. Simulation using the PSPICE program with 0.5 mum CMOS model of MIETEC. The simulation results show a 16 dB linear output current range with the linearity error less than 1 dB at 1.5 V supply voltage.
Keywords :
CMOS integrated circuits; MOSFET; SPICE; current mirrors; current-mode circuits; function generators; CMOS current-mode exponential function generator circuit; MOS transistor; PSPICE program; Taylor series expression; current mirrors; voltage 1.5 V; Bandwidth; CMOS technology; Circuit simulation; Linearity; MOSFETs; Medical simulation; Signal generators; Signal processing; Taylor series; Voltage;
Conference_Titel :
Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, 2008. ECTI-CON 2008. 5th International Conference on
Conference_Location :
Krabi
Print_ISBN :
978-1-4244-2101-5
Electronic_ISBN :
978-1-4244-2102-2
DOI :
10.1109/ECTICON.2008.4600529
