Engineering College

An NMOS transistor with k'-800 μA/V², W/L=12, Vтh=0.9V, and X=0.07 V-1, is operated with VGs=2.0 V.
1. What current Ip does the transistor have when is operating at the edge of saturation? Write the answer in mA

Answers

Answer 1

The transistor has a drain current of 52.8 mA when operating at the edge of saturation.

What is the significance of operating a transistor at the edge of saturation?

To find the drain current (Ip) at the edge of saturation, we need to first calculate the drain-source voltage (VDS) at this point. The edge of saturation is when VGS - Vth = VDS.

In this case, VGS = 2.0 V and Vth = 0.9 V, so VDS = VGS - Vth = 2.0 V - 0.9 V = 1.1 V.

The drain current in saturation is given by the equation:

Ip = (k' / 2) * (W/L) * (VGS - Vth)² * (1 + λVDS)

where λ is the channel-length modulation parameter, and VDS is the drain-source voltage.

Here, λ is not given, but assuming it to be 0, we get:

Ip = (k' / 2) * (W/L) * (VGS - Vth)² = (800 μA/V² / 2) * (12) * (1.1 V)² = 52.8 mA

The transistor has a drain current of 52.8 mA when operating at the edge of saturation.

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Related Questions

what is the difference between an argument that is valid and one that is invalid? construct an example each.

Answers

An argument is said to be valid when its conclusion follows logically from its premises. In other words, if the premises are true, then the conclusion must also be true.

On the other hand, an argument is said to be invalid when its conclusion does not follow logically from its premises. This means that even if the premises are true, the conclusion may not necessarily be true.
For example, consider the following argument:
Premise 1: All cats have tails.
Premise 2: Tom is a cat.
Conclusion: Therefore, Tom has a tail.
This argument is valid because if we accept the premises as true, then the conclusion logically follows. However, consider the following argument:
Premise 1: All dogs have tails.
Premise 2: Tom is a cat.
Conclusion: Therefore, Tom has a tail.
This argument is invalid because even though the premises may be true, the conclusion does not logically follow from them. In this case, the fact that all dogs have tails does not necessarily mean that all cats have tails, so we cannot use this premise to support the conclusion.
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