Figure - available from: Analog Integrated Circuits and Signal Processing
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Plot of input impedance vs. frequency

Plot of input impedance vs. frequency

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A high-performance class-AB flipped voltage follower (FVF) cell consisting of a level shifter, a bulk-driven transistor, and a folding transistor is presented in this paper. The level shifter improves the voltage swing while the bulk-driven transistor enhances the current driving capability. Further, a folding transistor allows the flow of sourcing...