Patent ID: 6778005
Filing Date: 2004-08-17
Classification: G05F

Abstract:
A current source, comprising:a buffer; an input terminal coupled to a non-inverting input of the buffer; a first MOS transistor; an output of the buffer being coupled to the gate of the first MOS transistor; an input pin; the source of the first MOS transistor coupled to the input pin; the drain of the first MOS transistor being coupled to an inverting input of the buffer; a first resistor; the first terminal of the first resistor being coupled to the gate of the first MOS transistor; a second MOS transistor; the second terminal of the first resistor being coupled to the gate of the second MOS transistor; a capacitor; the first terminal of the capacitor also being coupled to the gate of the second MOS transistor; the second terminal of the capacitor also being coupled to the inverting input of the buffer; the drain of the second MOS transistor being coupled to a ground pin; and the source of the second MOS transistor being coupled to an output terminal.