Simple CMOS current-mode exponential function generator circuit

Kumngern, Montree; Chanwutitum, Jirasak; Dejhan, Kobchai

doi:10.1109/ECTICON.2008.4600529

Simple CMOS current-mode exponential function generator circuit

Author(s)

Kumngern, Montree

Chanwutitum, Jirasak

Dejhan, Kobchai

Date Issued

October 6, 2008

Type

Conference Paper

DOI

10.1109/ECTICON.2008.4600529

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 0.5μm CMOS model of MIETEC. The simulation results show a 16dB linear output current range with the linearity error less than IdB at 1.5V supply voltage. © 2008 IEEE.

Citation

5th International Conference on Electrical Engineering Electronics Computer Telecommunications and Information Technology Ecti Con 2008, 2, 709-711, 2008