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The ideal long channel n MOSFET and p MOSFET devices shown in the circuits have threshold voltages of 1 V and −1 V, respectively. The MOSFET substrates are connected to their respective sources. Ignore leakage currents and assume that the capacitors are initially discharged. For the applied voltages as shown, the steady state voltages are
  • a)
    V1 = 5 V, V2 = 4 V
  • b)
    V1 = 4 V, V2 = 5 V
  • c)
    V1 = 4 V, V2 = -5 V
  • d)
    V1 = 5 V, V2 = 5 V
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
The ideal long channel n MOSFET and p MOSFET devices shown in the cir...
Given
(i) VTn = 1 V
(ii) VTp = -1 V
In NMOS transistor, gate voltage (VG) work as a controlled input. When NMOS work as a switch then,
If VG = 0 V, then NMOS will be OFF and if VG = +5 V , then NMOS will be ON.
(i) For VDS < />GS - VTn
VD - VS < />G - VS - VTn
VD - VG - VTn
When NMOS Will satisfy above equation, then NMOS will be in linear region
and hence it will be ON.
Therefore, VD = VS
(ii) For VDS ≥ VGS- VTn
VD - VS ≥ vGS - VTn
VD ≥ VG - VTn
When NMOS will satisfy above equation, then NMOS will be in saturation region and hence it will be ON.
Therefore, VD = VS = VG - VTn
VS = VG - VTn
For NMOS pass transistor logic
If VD - VG ≥ -VTn
Then, VG - VS = VTn
If VD - VG < -="" />Tn
Then, VS = VD
VD = 5 V
VG = 5V
VS = V1
VD - VG = 5 - 5 = 0
VD - VG ≥ -VTn
0 ≥ -1 [True]
Hence, VG - VS = VTn
5 - V1 = 1
5 - 1 = V1
V1 = 4 V
For PMOS pass transistor logic,
If VG - VD ≥ - |VTp|
Then, VS - VG = -|VTp|
If VG - VD < />Tp|
Then, VS = VD
VG = -5 V
VD = 5 V
VS = V2
VG - VD = -5 -5 = -10
VG - VD < />Tp|
-10 < -14="" />
Hence, VS = VD
V2 = 5 V
Hence, the correct option is (B).
Free Test
Community Answer
The ideal long channel n MOSFET and p MOSFET devices shown in the cir...
Given
(i) VTn = 1 V
(ii) VTp = -1 V
In NMOS transistor, gate voltage (VG) work as a controlled input. When NMOS work as a switch then,
If VG = 0 V, then NMOS will be OFF and if VG = +5 V , then NMOS will be ON.
(i) For VDS < />GS - VTn
VD - VS < />G - VS - VTn
VD - VG - VTn
When NMOS Will satisfy above equation, then NMOS will be in linear region
and hence it will be ON.
Therefore, VD = VS
(ii) For VDS ≥ VGS- VTn
VD - VS ≥ vGS - VTn
VD ≥ VG - VTn
When NMOS will satisfy above equation, then NMOS will be in saturation region and hence it will be ON.
Therefore, VD = VS = VG - VTn
VS = VG - VTn
For NMOS pass transistor logic
If VD - VG ≥ -VTn
Then, VG - VS = VTn
If VD - VG < -="" />Tn
Then, VS = VD
VD = 5 V
VG = 5V
VS = V1
VD - VG = 5 - 5 = 0
VD - VG ≥ -VTn
0 ≥ -1 [True]
Hence, VG - VS = VTn
5 - V1 = 1
5 - 1 = V1
V1 = 4 V
For PMOS pass transistor logic,
If VG - VD ≥ - |VTp|
Then, VS - VG = -|VTp|
If VG - VD < />Tp|
Then, VS = VD
VG = -5 V
VD = 5 V
VS = V2
VG - VD = -5 -5 = -10
VG - VD < />Tp|
-10 < -14="" />
Hence, VS = VD
V2 = 5 V
Hence, the correct option is (B).
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The ideal long channel n MOSFET and p MOSFET devices shown in the circuits have threshold voltages of 1 V and −1 V, respectively. The MOSFET substrates are connected to their respective sources. Ignore leakage currents and assume that the capacitors are initially discharged. For the applied voltages as shown, the steady state voltages are a)V1 = 5 V, V2 = 4 Vb)V1 = 4 V, V2 = 5 Vc)V1 = 4 V, V2 = -5 Vd)V1 = 5 V, V2 = 5 VCorrect answer is option 'B'. Can you explain this answer?
Question Description
The ideal long channel n MOSFET and p MOSFET devices shown in the circuits have threshold voltages of 1 V and −1 V, respectively. The MOSFET substrates are connected to their respective sources. Ignore leakage currents and assume that the capacitors are initially discharged. For the applied voltages as shown, the steady state voltages are a)V1 = 5 V, V2 = 4 Vb)V1 = 4 V, V2 = 5 Vc)V1 = 4 V, V2 = -5 Vd)V1 = 5 V, V2 = 5 VCorrect answer is option 'B'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about The ideal long channel n MOSFET and p MOSFET devices shown in the circuits have threshold voltages of 1 V and −1 V, respectively. The MOSFET substrates are connected to their respective sources. Ignore leakage currents and assume that the capacitors are initially discharged. For the applied voltages as shown, the steady state voltages are a)V1 = 5 V, V2 = 4 Vb)V1 = 4 V, V2 = 5 Vc)V1 = 4 V, V2 = -5 Vd)V1 = 5 V, V2 = 5 VCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The ideal long channel n MOSFET and p MOSFET devices shown in the circuits have threshold voltages of 1 V and −1 V, respectively. The MOSFET substrates are connected to their respective sources. Ignore leakage currents and assume that the capacitors are initially discharged. For the applied voltages as shown, the steady state voltages are a)V1 = 5 V, V2 = 4 Vb)V1 = 4 V, V2 = 5 Vc)V1 = 4 V, V2 = -5 Vd)V1 = 5 V, V2 = 5 VCorrect answer is option 'B'. Can you explain this answer?.
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