Analog integrated filter circuit

Details Analog integrated filter circuit Analog integrated filter circuit

H - Electricity

03

H

333/51

H03H 7/12 (2006.01) H03H 11/04 (2006.01) H03H 11/40 (2006.01)

Patent

CA 1161504

ABSTRACT An analog integrated filter circuit includes a capacitance multiplier combined with a DC bias controlled current circuit designed to render the filter circuit insensitive to changes in the parameter values of the components caused by process variations or a temperature change therein. The capacitance multiplier circuit includes grounded or ungrounded capacitance multipliers in different combinations operatively coupled to the DC bias controlled current circuit so that the capacitance multiplier circuit can be used to construct a predictable low pass, bandpass or high pass filter circuit with fre- quency characteristics that do not vary over temperature.

371291

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