An ultra low power lateral bipolar polysilicon emitter technology on SOI

Abstract
Until now the lateral bipolar transistor on SOI has been presented as an option in a CMOS process. In this investigation we show that this device structure is also very attractive for purely bipolar applications, enabling high frequency operation at ultra low power levels. Excellent devices with emitter areas down to 0.15 /spl mu/m/sup 2/, with scaled junction capacitances and f/sub T/ as high as 15 GHz are demonstrated. Due to the properly scaled junction capacitances a f/sub max/ of 15 GHz is realised at collector currents as low as 15 /spl mu/A.

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