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

Volume

2

fYear

2008

fDate

14-17 May 2008

Firstpage

709

Lastpage

712

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ECTICON.2008.4600529

Filename

4600529