Universal Active Voltage Filter Using Single Minus-Type Current Feedback Amplifier

摘要

The realization of the second-order universal (low-pass, band-pass, high-pass, band-reject, and all-pass) activevoltage filter using a single minus-type current feedback amplifier (CFA), two capacitors, and two resistosrs is proposed in this paper. The different choice of three voltage input signals determines the five generic filtering output signals. H-Spice simulations with 0.35μm process are used to validate the theoretical predictions of the filtering output signals, and show its low sensitivities and the sensitivity frequency responses.