A DVCC based voltage mode all pass filter using operational amplifier pole

摘要

In this paper a voltage mode all pass filter has been presented. This filter uses only two resistors as passive components and one Differential Voltage Current Conveyor and an operational amplifier as active components. The pole of operational amplifier is used to realize the all pass transfer function. The introduction of operational amplifier pole eliminates the need of capacitor from the circuit, thus rendering the circuit suitable for integration. The PSPICE simulations show that circuit has an all pass response upto high frequency of 3 MHz and is capable of providing phase shift between 0° and -108°.