Abstract: This chapter focuses on the integrators and differentiators. Integrators are used to perform the timing functions, to measure charge, to generate linear ramps and triangular waves, and in many other applications. In a practical integrator circuit, it is necessary to provide some means to set a desired initial value of the integrator output voltage at the start of the integration period. Integrator output voltage drift with time can be adjusted to zero by cancelling the effects of the amplifier offsets with a suitable balance control. There are a variety of external circuit modifications that can be made to the basic integrator circuit to change its response characteristics and extend its usefulness, including summing integrator, augmenting integrator, differential integrator, and current integrator. On the other hand, a simple differentiator circuit is obtained by interchanging the position of the resistor and the capacitor in the basic integrator circuit. The ideal performance equation for the simple differentiator is readily derived from the usual ideal amplifier assumptions. Because the input signal is applied through a capacitor, there will be a current flow to the amplifier summing point and a nonzero output voltage only when the input voltage changes.
Publication Year: 2003
Publication Date: 2003-01-01
Language: en
Type: book-chapter
Indexed In: ['crossref']
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Cited By Count: 1
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