Abstract
A critical study is made of a canonic second-order bandpass realization using a single-operational amplifier in low-gain (unity or two) connection. The circuit is suitable for low- and medium Q applications and features good stability, wide frequency range of operation and versatility of conversion to a high-pass filter. An all-grounded-capacitor version of the filter is also given; which is a desirable feature for integrated circuit (IC) implementation. The unity gain configuration presents component minimization over other similar circuits.
Source: S.C. Dutta Roy & Muslim T. Ahmed, “Second Order Active RC Band-Pass Filters using Operational Amplifier in low Gain Connection,” JIETE, vol 21, pp 248–252, May 1975.
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Dutta Roy, S. (2020). Second-Order Active RC Bandpass Filters Using Operational Amplifier in Low-Gain Connection. In: Topics in Signal Processing. Springer, Singapore. https://doi.org/10.1007/978-981-13-9532-1_11
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DOI: https://doi.org/10.1007/978-981-13-9532-1_11
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