A voltage-controlled duty-cycle oscillator

Author

Spencer, Richard R. ; Angell, James B.

Author_Institution

Integrated Circuits Lab., Stanford Univ., CA, USA

Volume

25

Issue

1

fYear

1990

fDate

2/1/1990 12:00:00 AM

Firstpage

274

Lastpage

281

Abstract

A voltage-controlled duty-cycle oscillator (VCDCO) developed for use with integrated silicon sensors is described. The circuit´s transfer function is, to first order, completely independent of component values. Measured results indicate that the circuit is capable of resolving input voltage changes as small as 6 μV in a 2000-μs period and has a dynamic range of 72 dB over the full commercial temperature range while operating from a 3-V supply. A two-terminal temperature transducer built using the circuit is presented

Keywords

bipolar integrated circuits; electric sensing devices; linear integrated circuits; multivibrators; relaxation oscillators; temperature measurement; variable-frequency oscillators; 3 V; bipolar IC; emitter-coupled multivibrator; input voltage changes; integrated Si sensor application; monolithic IC; transfer function; two-terminal temperature transducer; voltage-controlled duty-cycle; Dynamic range; Integrated circuit measurements; Sensor phenomena and characterization; Silicon; Temperature distribution; Temperature sensors; Transducers; Transfer functions; Voltage; Voltage-controlled oscillators;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.50314

Filename

50314