What is a switch logic?

[′läj·ik ‚swich] (electronics) A diode matrix or other switching arrangement that is capable of directing an input signal to one of several outputs.

What is switching activity in CMOS?

Switching activity is the measurement of changes of signal values. It has two parts: probability and toggle density. Toggle density is the ‘f’ in the formula for dynamic power in CMOS circuits: P(dynamic) = ½ C V² f. It is the toggle density that is primarily used for power analysis and optimization.

What are the alternate gate circuits in VLSI?

Alternative Logic Gates also called as Alternate Gates or Bubbled Gates are the logic gates that can be used during the unavailability of the given logic gates to produce the same output.

How can you use a CMOS as a switch?

CMOS Transmission Gate Two MOS transistors are connected back-to-back in parallel with an inverter used between the gate of the NMOS and PMOS to provide the two complementary control voltages. When the input control signal, VC is LOW, both the NMOS and PMOS transistors are cut-off and the switch is open.

How Mosfet acts as a switch?

The two MOSFETs are configured to produce a bi-directional switch from a dual supply with the motor connected between the common drain connection and ground reference. When the input is LOW the P-channel MOSFET is switched-ON as its gate-source junction is negatively biased so the motor rotates in one direction.

What is gate logic in VLSI?

Explanation: Gate logic is also called as restoring logic. This is a logic circuitry designed so that even with an imperfect input pulse a standard output occurs at the exit of each successive logic gate. 2. Both NAND and NOR gates can be used in gate logic.

What is switching activity factor in VLSI?

Switching Activity Factor (A) of a circuit node is the probability the given node will change its state from 1 to 0 or vice versa at a given clock tick. Activity factor is a function of the circuit topology and the activity of the input signals.

What are the types of alternative logic gate?

The alternative logic gates are NAND and the NOR logic gates. Alternative methods using NAND and NOR gates are more economical and therefore more widely used.

What are complex gates in VLSI?

Complex gates are often used in CMOS VLSI chip design because they can be realized very efficiently, based on clever combinations of series- and parallel-connected transistors.

Which region MOSFET acts as a switch?

In order to operate a MOSFET as a switch, it must be operated in cut-off and linear (or triode) region. Assume the device is initially OFF. The voltage across Gate and Source i.e., VGS is made appropriately positive (technically speaking, VGS > VTH), the MOSFET enters linear region and the switch is ON.