Question
Download Solution PDFFor a certain D-MOSFET, IDSS = 10 mA and VGS(off) = -8 V. Calculate ID at VGS = -4 V.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Shockley's equation is given as:
\({I_D} = {I_{DSS}}{\left( {1-\frac{{{V_{GS}}}}{{{V_P}}}} \right)^2}\)
Where,
VGS = Gate to source voltage
IDSS = Drain to source saturation current
VP = Pinch-off voltage
ID = Drain current
Calculation:
Given,
VGS = -4 V
IDSS = 10 mA
VGS(off) = Vp = -8 V
Drain current \({I_D} = {I_{DSS}}{\left( {1-\frac{{{V_{GS}}}}{{{V_P}}}} \right)^2} = {10\times10^{-3}}{\left( {1-\frac{{{-4}}}{{{-8}}}} \right)^2}=2.5\times10^{-3}\; A\)
ID = 2.5 mA
Last updated on May 29, 2025
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