Please help!!! Task 3 a) Outpunts on the RTL link in the figure above has the fo

Question

Please help!!!

Task 3

a)

Outpunts on the RTL link in the figure above has the following parameters:

Power supply voltage Vcc = 5.0 volts

Resistance R = 100 Ohm

Channel resistance RDS on = 0.1ohm ^ 2

Threshold voltage VTH = 2.0 Volt

A clock signal is connected to input A, i.e G(ate) input of the transistor. When the signal is high "1" the transistor is on. When the signal is low "0" the transistor is off.

What is the minimum voltage the clock signal must have in the high state for the transistor to be on?

What current I will go from Vcc to ground (GDS)?

b)

calculate what the average output power supply must deliver to the logical link.

Calculate also what the average power emitted is in the transistor.

Tips: General formula for power is P = V x I = R x I^2

Explanation / Answer

a)

for the transistor to be on the min voltage (Vgs)>=Vth

here Vth=2V

so min voltage for the transistor to be on is 2V

current I from

Vdd to gnd when transistor on = Vdd/(R+Rds)=5/(100+1)=49.5 mA

b) power at 100 ohm is = I^2*R = 49.5m^2*100= 0.245 Watts

avg power emitted in the transistor is = I^2*Rds = 49.5m^2*1 = 2.45 mWatts

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