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The parameters of n- channel E-MOSFET are $k = 0.2 mA/v^2, \lambda = 0.01V^{-1}, V_T = 1.2 V$ Calculate the output resistance for i) $V_{GS} = 2V$ ii) $V_GS = 4V$
1 Answer
written 6.0 years ago by |
Given : VT = 1.2V, k = 0.2 mA/v2 , λ = 0.01v-1
1) When VGS= 2V
IDQ = k [(VGS - VT )2 ]
IDQ = 0.2 ×10-3[(2 – 1.2 )2]
IDQ = 1.28 × 10-4 A
ro = 1/(λ IDQ )
ro = 1/((0.01×1.28 ×10^(-4)))
ro =781.250KΩ
2) When VGS= 4V
IDQ = k [(VGS - VT )2 ]
IDQ = 0.2 ×10-3[(4 – 1.2 )2]
IDQ = 1.568× 10-3 A
ro = 1/(λ IDQ )
ro = 1/((0.01×1.568×10^(-3)))
ro = 63.775KΩ