Analysis of Frequency response Deviation of Fully-Differential Ladder Active-RC Filters due to Parasitic Zeros
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Abstract
In this paper, equations for two parasitic zeros of fully-differential op amp-RC ladder filters are derived. These zeros, which were caused by op amp non-idealities especially finite gain, can have significant impact on frequency response of the filters by degrading their stop-band attenuation. Simulation results are in good agreements with the derived equations.
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Copyright @2021 Engineering Transactions
Faculty of Engineering and Technology
Mahanakorn University of Technology
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