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A new design method for the Euler differentiator using the MOSFET switched-current technique with reduced channel length modulation effect is proposed. The realisation of these circuits requires only current mirrors, voltage-to-current convertors, and analogue switches. Because the input terminal of this differentiator is a virtual ground, signal processing circuits which have cascade structures can...
New second-order notch and allpass filters using a single current follower are proposed. The filters use five passive RC elements. Both the active and passive sensitivities are very low. The natural frequencies and the quality factors of the proposed filters are insensitive to the current tracking error of the current follower. Simulation results which agree with the theoretical analysis are obtained...
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