[amp_mcq option1=”BJT” option2=”MOSFET” option3=”Both BJT and MOSFETs” option4=”JFET” correct=”option3″]
The correct answer is C. Both BJT and MOSFETs.
Bipolar junction transistors (BJTs) and metal-oxide-semiconductor field-effect transistors (MOSFETs) are both types of transistors that are used in BiCMOS technology. BJTs are used for their high current gain and high speed, while MOSFETs are used for their low power consumption and high switching speed.
BJTs are made up of three semiconductor regions: the emitter, base, and collector. The emitter and collector are heavily doped with impurities, while the base is lightly doped. When a small current is applied to the base, it causes a much larger current to flow between the emitter and collector. This is because the base region is so thin that the electrons from the emitter can easily tunnel through the base-collector junction.
MOSFETs are made up of a semiconductor substrate, a gate electrode, a drain electrode, and a source electrode. The gate electrode is insulated from the substrate by a thin layer of oxide. When a voltage is applied to the gate, it creates an electric field that attracts or repels the charge carriers in the substrate. This causes a current to flow between the drain and source electrodes.
BiCMOS technology combines the advantages of BJTs and MOSFETs. BJTs are used for their high current gain and high speed, while MOSFETs are used for their low power consumption and high switching speed. This makes BiCMOS technology ideal for high-speed, low-power applications such as microprocessors and memory chips.