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Title : Designing Operational Amplifier Oscillator Circuits For Sensor Applications
Author : Jim Lepkowski & Microchip Technology Inc.
INTRODUCTION :
Operational amplifier (op amp) oscillators can be used
to accurately measure resistive and capacitive sensors.
Oscillator design can be simplified by using the
procedure discussed in this application note. The derivation
of the design equations provides a method to
select the passive components and determine the influence
of each component on the frequency of oscillation.
The procedure will be demonstrated by analyzing
two state-variable RC op-amp oscillator circuits. |
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