What is the main source of BJT (bipolar triode) noise?

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What is the main source of BJT (bipolar triode) noise?


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Answer

There are three main types of noise in BJT:

(1) Thermal noise: due to the irregular thermal motion of the carrier passing through the bulk resistance in the BJT.Expression: In2=2Qib

(3) Flicker noise: Also called 1/f noise, the current cause is not very clear, and it is related to the semiconductor itself and the process level.


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