Patent ID: 6078094
Filing Date: 2000-06-20
Classification: H01L

Abstract:
A starter current source device with automatic shut-down capability for use with analog circuit devices, the starter current source device comprising:a semiconductor substrate of a first conductivity type having an active area on its surface;a deep well region of a second type disposed below the surface of the semiconductor substrate and below the active area of the semiconductor substrate;a first surface well region of the second conductivity type disposed on the surface of the semiconductor substrate, the first surface well region circumscribing the deep well region and the active area of the semiconductor substrate;a narrow channel region of the first conductivity type in the semiconductor substrate separating the deep well region from the first surface well region;a first contact region of the second conductivity type for electrically connecting the first surface well region to the analog device circuit; anda second contact region of the first conductivity type for electrically connecting the active area of the semiconductor substrate to the analog device circuit.