DVCC based voltage-mode multifunctional biquadratic filter

A voltage-mode DVCC based multifunctional biquardratic filter configuration is proposed. The circuit uses two DVCCs as active elements and together with two capacitors and three resistors as passive elements. The proposed filter can realize the low-pass, high-pass, three band-pass, band-eliminate and all-pass responses in a single circuit. The new configurations offer very high-input impedance, which enables easy cascading and enjoy low sensitivities. The theoretical results are verified with PSPICE simulations using a CMOS realization of DVCC.