Charge pump circuit,passive buffer that employs the charge pump circuit,and pass gate that employs the charge pump circuit

摘要

Buffer (300) that includes an input node (304), an output node (308), and a three-transistor charge pump circuit (310) is coupled to the input node (304) and the output node (308). The buffer (300) generates an output signal that is a delayed version of a signal presented at the input node (304). The three-transistor charge pump (310) includes a first transistor (314) (e.g., a pass transistor) that includes a drain electrode that is coupled to the input node, a gate electrode and a source electrode; a second transistor (320) that includes a drain electrode that is coupled to a first predetermined voltage, a gate electrode coupled to the drain electrode of the second transistor, and a source electrode coupled to the gate electrode of the first transistor; and a capacitive element (330) that includes a first electrode that is coupled to the source electrode of the second transistor (320) and the gate electrode of the first transistor (314) and a second electrode that is coupled to the output node (308).