Switched Capacitor Filter
نویسندگان
چکیده
A Switched Capacitor circuit is an electronic circuit element used for discrete time signal processing. It works by moving charges into and out of capacitors when switches are opened and closed. Usually, nonoverlapping signals are used to control the switches, so that not all switches are closed simultaneously. Filters implemented with these elements are termed switched capacitor filters. Unlike analog filters, which must be constructed with resistors, capacitors (and sometimes inductors) whose values are accurately known switched capacitor filters depend only on the ratios between capacitances. This makes them much more suitable for use with in integrated circuits, where accurately specified resistors and capacitors are not economical to construct.
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