Proceedings ArticleDOI
Nonsaturated multivibrators for sensor signal conditioning
Igor M. Filanovsky
- pp 1011-1015
TLDR
Multivibrators based on operational transconductance amplifiers (OTA) based on astable bridge multivibrator with one OTA and the circuits with bipolar and MOS OTAs are treated.Abstract:
Multivibrators based on operational transconductance amplifiers (OTA) are considered. The first is an astable bridge multivibrator with one OTA. This circuit is useful for two-wire bridge-to-frequency converters. The second circuit is an astable multivibrator with two OTAs. This circuit provides a linear dependence of the oscillation frequency on the sensor control current. Both circuits are nonsaturated multivibrators. Calculation of their oscillation frequency involves a linear model which describes the circuit behavior near the transition point from one quasistable state to another. The circuits with bipolar and MOS OTAs are treated. >read more
Citations
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A current conveyor-based relaxation oscillator as a versatile electronic interface for capacitive and resistive sensors
TL;DR: In this article, a second-generation current conveyor (CCII+) is used for a single plus-type IC with resistive, capacitive and resistive-capacitive sensors.
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Design and implementation of relaxation generators: new application circuits of the DVCC
TL;DR: In this article, the authors proposed a relaxation generator with a differential voltage current conveyor (DVCC) with a minimum number of passive components, which can generate a symmetrical square wave with a fixed duty cycle and adjust the tuning factor of the potentiometer.
Voltage-Controlled Square/Triangular Wave Generator with Current Conveyors and Switching Diodes
TL;DR: In this paper, a relaxation oscillator based on integrating the diode-switched currents and Schmitt trigger is presented, derived from a known circuit with operational amplifiers where these active elements were replaced by current conveyors.
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Dual-Band Waveform Generator With Ultra-Wide Low-Frequency Tuning-Range
TL;DR: A novel mixed-signal low-power dual-band square/triangular waveform generator (WFG) chip with a wide low-frequency tuning range for medical bio-electric stimulation therapy and the power consumption was only 0.457 mW.
Journal ArticleDOI
A waveform generator circuit for extra low-frequency CMOS micro-power applications
TL;DR: A novel low-power CMOS extra low-frequency ELF waveform generator based on an operational trans-conductance amplifier OTA using 130-nm IBM CMOS technology with a ±1.2-V voltage supply is presented.
References
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Book
Analysis and Design of Analog Integrated Circuits
Paul R. Gray,Robert G. Meyer +1 more
TL;DR: In this article, the authors combine bipolar, CMOS and BiCMOS analog integrated circuits into a unified treatment that stresses their commonalities and highlights their differences, and provide valuable insights into the relative strengths and weaknesses of these important technologies.
Journal ArticleDOI
A versatile monolithic voltage-to-frequency converter
TL;DR: In this article, a multivibrator with an 80-dB dynamic range was used for V-F conversion with high linearity (0.02 percent) using a single low-current supply and can accept millivolt signals.
Journal ArticleDOI
A high-frequency temperature-stable monolithic VCO
J.F. Kukielka,Robert G. Meyer +1 more
TL;DR: A new high-frequency monolithic voltage-controlled oscillator (VCO) is described that achieves /spl plusmn/60 ppm//spl deg/C temperature coefficient of frequency over 0-75/spl deg-C at center frequencies from DC to 20 MHz.
Journal ArticleDOI
Two-wire bridge-to-frequency converter
TL;DR: In this article, an integrated two-wire bridge-to-frequency converter is presented for use as a remote-signal conditioner for sensor bridges such as strain-gauge bridges of platinum-wire temperature-sensing bridges.
Journal ArticleDOI
A highly stable VCO for application in monolithic phase-locked loops
R.R. Cordell,W.G. Garrett +1 more
TL;DR: In this paper, a new voltage-controlled oscillator (VCO) is described which achieves a better combination of temperature stability, speed, and power dissipation than could previously be obtained in a monolithic integrated circuit.