Active lowpass filters without external passive components realized with OTA and op amps

Tarim N., Cicekoglu O., Kuntman H.

44th IEEE Midwest Symposium on Circuits and Systems (MWSCAS 2001), Drayton, Canada, 14 - 17 August 2001, pp.192-195 identifier

  • Publication Type: Conference Paper / Full Text
  • City: Drayton
  • Country: Canada
  • Page Numbers: pp.192-195
  • Istanbul Technical University Affiliated: No


This paper presents two second-order lowpass filters realized with operational amplifiers (OA) and operational transconductance amplifiers (OTA) only. The circuits do not require additional passive components, which makes them suitable for integrated circuit (IC) implementation and reduces chip area. The filter parameters can be adjusted independently. Simulation results are included to verify theory.