Thermal Noise in Silicon Bipolar Transistors and Circuits for Low-Current Operation--Part : Compact Device Model--

Yevgeny V. MAMONTOV, Magnus WILLANDER

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Summary :

This work deals with thermal-noise modeling for silicon vertical bipolar junction transistors (BJTs) and relevant integrated circuits (ICs) operating at low currents. The two-junction BJT compact model is consistently derived from the thermal-noise generalization of the Shockley semiconductor equations developed in work which treats thermal noise as the noise associated with carrier velocity fluctuations. This model describes BJT with the Itô non-linear stochastic-differential-equation (SDE) system and is suitable for large-signal large-fluctuation analysis. It is shown that thermal noise in silicon p-n-junction diode contributes to "microplasma" noise. The above model opens way for a consistent-modeling-based design/optimization of bipolar device noise performance with the help of theory of Itô's SDEs.

Publication
IEICE TRANSACTIONS on Electronics Vol.E78-C No.12 pp.1761-1772
Publication Date
1995/12/25
Publicized
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DOI
Type of Manuscript
PAPER
Category
Integrated Electronics

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