I. Padilla-Cantoya, F. Silva-Del-Rosario, Miguel Silva-Martinez, J. E. Molinar-Solís
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引用次数: 5
Abstract
A comparison between different modifications of the conventional cell denominated as Flipped Voltage Follower to provide class AB operation is presented. Additionally, two new class-AB structures with high linearity and large operational range are introduced, and included in the comparison. Computer simulation shows the operation of these modifications when driving a capacitive load, including the resulting output resistance when the class AB operation is achieved. Also, the implementation of these modifications in a highly linear operational transconductance amplifier is discussed, as well as the impact of the output resistance of these modifications on the linearity of the system. Additionally, a variation of conventional cascoded current mirrors used in the amplifier to achieve very large output currents is presented. Simulation results in 0.5μm technology show the results of the comparison.
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