Patent ID: 6842058

Claim:
A circuit for improving an output signal, including: a driver circuit coupled for receiving a logical input signal and for providing the output signal representative of the input signal such that the output signal is controllable; and a control circuit operating in response to receiving the logical input signal for providing a control signal to the driver circuit to improve the shape of the output signal while the driver circuit substantially maintains control of the output signal, wherein the driver circuit and the control circuit are operable in combination to controllably slow the slew rate of the output signal relative to the logical input signal, wherein the driver circuit includes; a first switch having a control terminal coupled to receive the input signal; a current source having a first conduction terminal coupled to a first conduction terminal of the first switch and a second conduction terminal coupled for receiving a reference potential; an operational amplifier having a non-inverting input coupled to a second conduction terminal of the first switch and an output coupled for providing a drive signal; a capacitor having a first conduction terminal coupled for receiving a feedback of the output signal and a second conduction terminal coupled to the non-inverting input of the operational amplifier; and a second switch having a control terminal coupled for receiving the drive signal to provide the output signal.