ADAPTIVE DRIVER WITH CAPACITIVE LOAD SENSING AND METHOD OF OPERATION

摘要

An adaptive output driver includes circuitry for sensing the capacitive loading of a driver circuit and then adjusting the drive output so that the output signal possesses a desired slew rate. In one embodiment, the circuit (100) of the present invention includes a capacitance sensor (105), a control circuit (110), and an output driver (115). The capacitance sensor (105) measures the unknown load capacitance (120). The control circuit (110) generates a control signal in response to the capacitive load measurement. The output driver (115) receives the control signal and in response produces an output level which when supplied to the capacitive load produces an output signal having the desired slew rate.