Temperature stable BiCMOS voltage-to-frequency converter

Author

Filanovsky, I.M. ; Cai, Sean Sidong

Author_Institution

Alberta Univ., Edmonton, Alta., Canada

Volume

1

fYear

1996

fDate

12-15 May 1996

Firstpage

349

Abstract

A BiCMOS temperature stable voltage-to-frequency converter is described. The circuit includes an input voltage-to-current conversion stage followed by a voltage-controlled current switch. The switch is controlled by a nonsaturated multivibrator with a limiter of the output voltage swing. The multivibrator thresholds are stabilized using a current produced in a bandgap voltage reference. This allows one to obtain high resolution near both trigger thresholds. The difference between simulated and calculated characteristics is less than 5% in the range 0.5 to 2 V of the input signal (for 5 V power supply voltage). The temperature variation of sample oscillation frequencies for this range of input signal was less than 2% in the temperature range -25°C to 75°C. The converter is under fabrication using BATMOS process

Keywords

BiCMOS analogue integrated circuits; circuit stability; integrated circuit measurement; multivibrators; voltage-frequency convertors; -25 to 75 degC; 0.5 to 2 V; BATMOS process; BiCMOS voltage-to-frequency converter; bandgap voltage reference; multivibrator thresholds; nonsaturated multivibrator; temperature stability; trigger thresholds; voltage-controlled current switch; voltage-to-current conversion stage; BiCMOS integrated circuits; Frequency; Photonic band gap; Power supplies; Signal resolution; Switches; Switching circuits; Temperature distribution; Threshold voltage; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1996. ISCAS '96., Connecting the World., 1996 IEEE International Symposium on

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-3073-0

Type

conf

DOI

10.1109/ISCAS.1996.539901

Filename

539901