Question

. Assuming an n-type transistor with Vds of 1.8V and Vt of 0.7V, find the ranges of Vgs to put the transistor in cutoff, linear, and saturation regions.

Answer 1

1. Cut off region: Vgs < 0.7 volts

2. Linear region: Vgs > 2.5

3. Saturation region: 0.7 < Vgs < 2.5

Step-by-step explanation:

This question has provided us with these details

Vds = 1.8V

Vt = 0.7V

1. To get The cutoff region

Vgs < Vt

Such that when we put in the value, we have:

Vgs < 0.7 volts

This gives us the cut off region

2. The we get the Linear region using this formula:

Vds < Vgs - Vt

After we put in the values;

1.8V < Vgs - 0.7V

Such that

1.8V + 0.7V < Vgs

2.5V < Vgs

This is therefore the linear region of the transistor when Vgs > 2.5 volts

3. We get The saturation region using

Vgs < Vt and

Vds > Vgs - Vt

When we put in the values we have:

Vgs < 0.7V and

1.8V > Vgs - 0.7V

1.8V+0.7V > Vgs

2.5V > Vgs

Then our saturation region would be

0.7V < Vgs < 2.5 V