Rapid slewing unity gain buffer amplifier with boosted parasitic capacitance charging

摘要

Charging of parasitic capacitances present in a unity gain buffer amplifier is speeded up, with a consequent increase in input slew rate capability, by connecting a resistance circuit across the current sources and output transistors. Imbalances in the response rate of the input transistors to changes in the input voltage produce a current shift through the resistor that charges parasitic capacitances to speed up the output transistor response.