Patent ID: 8493051

Claim:
A voltage follower circuit for producing an output signal which follows an input signal, comprising: (a) an input stage having a first input for receiving the input signal, and a second input for receiving the output signal, the input stage generating a first signal indicative of a difference between the input signal and the output signal; (b) an output circuit having an input coupled to receive the first signal and also having an output on which the output signal is produced; and (c) a slew boost circuit including 1) a first transistor having a control electrode for receiving the input signal, a first electrode coupled to a first current source, and a second electrode coupled to a first supply voltage, 2) a second transistor having a control electrode coupled to the first electrode of the first transistor, a first electrode coupled to the first signal, and a second electrode coupled to the first supply voltage, and 3) a third transistor having a control electrode coupled to the first electrode of the first transistor, a first electrode coupled to conduct the first signal, and a second electrode coupled to a second supply voltage.