Patent ID: 8049284

Claim:
A bipolar device formed in an active area of a substrate, comprising: a first emitter formed in the substrate; a first collector laterally spaced from the first emitter in the substrate; a first gate terminal placed above a space between the first emitter and the first collector; a first intrinsic base defined underneath the first gate terminal, forming a first bipolar junction with the first emitter and the first collector; a second emitter formed in the substrate; a second collector laterally spaced from the second emitter in the substrate; a second gate terminal placed above a space between the second emitter and the second collector; a second intrinsic base defined underneath the second gate terminal, forming a second bipolar junction with the second emitter and the second collector; and a common extrinsic base placed adjacent to and separated from the first collector and the second collector, and connected to the first intrinsic base and the second intrinsic base via the substrate.