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Consider the ...

Question

Consider the MOS transistor circuit shown in figure below:

$Assuming both the MOS transistor are identical with μ_{n} C_{o x} = 2.5 μ A / V^{2}, V_{T h} = 1 V and \frac{W}{L} = 3 then the value of current I_{D} is equal to$

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Solution

$∵ Both the transistors are matched, thus,$

$V_{G S 1} = V_{G S 2}$

$and I_{D 1} = I_{D 2}$

$and 5 = V_{G S 1} + V_{G S 2}$

$∴ V_{G S 2} = \frac{5}{2} = 2.5 V$

$I_{D} = \frac{2.5 \times 10^{- 6} \times 3}{2} (2.5 - 1)^{2} = 8.43 μ A \approx 8.4 μ A$

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μ_{n} C_{o x} = 2.5 μ A / V^{2}, V_{T h} = 1 V a n d \frac{W}{L} = 3

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The two N-MOS transistor are identical with threshold voltage V_{T} = 1 V and \frac{μ_{n} C_{o x} W}{L} = 2 m A / V^{2} . Assuming the value of λ = 0, the value of drain to source voltage for transistor T_{2} (V_{D S 2)} is equal to _____V.

K_{a} = \frac{μ_{u} C_{o x} W}{2 L}

V_{T h} .

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\frac{V_{o u t 2}}{V_{o u t 1}}

{(\frac{W}{L})}_{1} = 1.75

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{(\frac{W}{L})}_{2} =

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\frac{μ_{n} C_{o x} W}{L} = 2 m A / V^{2}

T_{2} (V_{D S 2})

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