Journal article Open Access

Current Feedback Operational Amplifier (CFOA) Based High Speed Notch Filter Using THS3202 IC

Vijay laxmi Kalyani; Surbhi Pokharna

In this paper a high speed notch filter has been designed on a 50MHz frequency range using a CFOA IC -THS3202. The THS3202 IC is a 2GHz dual current Feedback Amplifier having higher slew rate of 9000 V/µs. The proposed circuit can be used to eliminate the interference signal between a particular frequency band  at 50 MHz. This type of circuitry can be useful for high frequency range of application such as coax stub that is used on high frequency to minimize interstation interference,dual band antennas, HF transreceivers etc. Simulation results and analysis have been carried out using NI-multisim software. Ultiboard results and 3D layout are also shown of the proposed circuit to make a complete PCB circuit.

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