Qualcomm L2 Engineer Interview Questions, Process, and Tips

Leakage current in CMOS refers to the small amount of current that flows through the transistors when they are in the off state.

• Leakage current occurs due to the imperfect insulation between the source and drain terminals of the transistors.

• It is an undesirable phenomenon as it leads to power dissipation and can affect the performance and reliability of CMOS circuits.

• Leakage current can be categorized into subthreshold...read more

The different terminals of a MOSFET are the gate, source, and drain.

• The gate terminal controls the flow of current between the source and drain.

• The source terminal is where the current enters the MOSFET.

• The drain terminal is where the current exits the MOSFET.

• The gate-source voltage determines the conductivity of the channel between the source and drain.

• Examples of MOSFETs include enhancement-mode and depletion-mode MO

Ohm's law states that the current flowing through a conductor is directly proportional to the voltage applied across it and inversely proportional to its resistance.

• Ohm's law is expressed as V = IR, where V is the voltage, I is the current, and R is the resistance.

• It helps in understanding the relationship between voltage, current, and resistance in an electrical circuit.

• For example, if the voltage across a resistor is...read more

The direction of current flow is opposite to the direction of electron flow due to historical convention.

• The concept of current flow was developed before the discovery of electrons.

• Benjamin Franklin proposed the convention of positive charge carriers, which led to the opposite direction of current flow.

• In reality, electrons are negatively charged and flow from the negative terminal to the positive terminal of a power s...read more

An inductor is a passive electronic component that stores energy in a magnetic field when current flows through it.

• Inductors are typically made of a coil of wire wound around a core material.

• They are used in electronic circuits to control the flow of current and store energy.

• Inductors can be found in various applications such as power supplies, filters, and oscillators.

• They are measured in units called henries (H).

• Indu...read more