选择您的滤波电路的运算放大器

Analogfilterscanbefoundinalmosteveryelectroniccircuit.

Audiosystemsusethemforpreamplificationandequalization.

Incommunicationsystems,filtersareusedfortuningspecific

frequenciesandeliminatingothers.Butifananalogsignalis

digitized,low-passfiltersarealwaysusedtopreventaliasing

errorsfromout-of-bandnoiseandinterference.SelecttheRightOperationalAmplifierforyourFilteringCircuitsByBonnieC.Baker,MicrochipTechnologyInc.ANALOGDESIGNNOTEADN003IntroductionAnalogfilterscanbefoundinalmosteveryelectroniccircuit.Audiosystemsusethemforpreamplificationandequalization.Incommunicationsystems,filtersareusedfortuningspecificR3frequenciesandeliminatingothers.Butifananalogsignalisdigitized,low-passfiltersarealwaysusedtopreventaliasingC1errorsfromout-of-bandnoiseandinterference.R1R2