Patent ID: 7723803

Claim:
A bipolar device formed by a CMOS process, the device comprising: an emitter comprising an implant region of a first conductivity type formed in a semiconductor substrate; a collector comprising an implant region of the first conductivity type laterally spaced from the emitter in the substrate; a polysilicon gate terminal formed on the substrate, wherein said emitter and collector implant regions are aligned with the lateral edges of the polysilicon gate terminal such that the polysilicon gate terminal defines the spacing between the emitter and the collector implant regions; and an extrinsic base comprising an implant region of a second conductivity type formed only laterally in the substrate a predetermined distance from either the emitter or the collector implant region, wherein the base, the emitter, the collector and the gate terminal are located in an active area defined by a surrounding isolation structure in the substrates, wherein the isolation structure is a shallow trench isolation defining the active area, and wherein the substrate has an upper surface, the bipolar device further comprising a divider disposed on said substrate between the extrinsic base and the collector for separating the collector from the extrinsic base, wherein the divider is formed entirely above the upper surface of said substrate thereby allowing free flow of carriers to and from the extrinsic base.