Title :
A voltage-controlled duty-cycle oscillator
Author :
Spencer, Richard R. ; Angell, James B.
Author_Institution :
Integrated Circuits Lab., Stanford Univ., CA, USA
fDate :
2/1/1990 12:00:00 AM
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;
Journal_Title :
Solid-State Circuits, IEEE Journal of
