CMOS bridge to frequency converter with gain and offset control

Author

McDonagh, D. ; Arshak, K.I.

Author_Institution

Dept. of Electron. & Comput. Eng., Limerick Univ., Ireland

Volume

2

fYear

1997

Firstpage

689

Abstract

This paper describes the design and simulation of a new CMOS bridge to frequency converter with gain and offset control. This circuit also includes adjustable operating and centre frequencies. With a balanced bridge, output frequencies from 10.9 kHz to 220 kHz were simulated by varying the capacitor in the active integrator of the VFC circuit. When the gain control frequency was varied between 81 and 172 kHz, the output frequency varied from 28 to 100 kHz. The offset control was simulated for the worse case situation, i.e., the resistors in the bridge were equal to their nominal value plus (or minus) 50 Ω

Keywords

CMOS analogue integrated circuits; bridge circuits; frequency control; gain control; voltage-frequency convertors; 10.9 to 220 kHz; CMOS bridge to frequency converter; adjustable centre frequency; adjustable operating frequency; balanced bridge; gain control; offset control; Bridge circuits; Capacitors; Circuit simulation; Frequency conversion; Gain control; Hardware; Optical wavelength conversion; Resistors; Transconductance; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Microelectronics, 1997. Proceedings., 1997 21st International Conference on

Conference_Location

Nis

Print_ISBN

0-7803-3664-X

Type

conf

DOI

10.1109/ICMEL.1997.632937

Filename

632937