All Questions
Tagged with nmos integrated-circuit
9
questions
0
votes
0
answers
76
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NMOS Cascode Logic
I have following problem and I ask you ,if possible, any help to resolve it.
Size the following circuit so that it achieves a 100 ps delay (50-50) using 0.25 μm devices, while driving a 100 fF load ...
0
votes
1
answer
66
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MOS device sizes
Hello guys! I just want to ask what's the difference between the actual W/L and the W/L shown at the image below? I'm kind of confused. Thank you!
- 31
33
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3
answers
10k
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Why would a Intel 8080 chip be destroyed if +12 V is connected before −5 V?
The Intel 8080 is a classic microprocessor released in 1974, fabricated using an enhancement-mode NMOS process, and shows various unique characteristics related to this process, such as the ...
- 7,218
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3
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236
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0
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1
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83
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Deriving the Transistor Width for NOR
I'm an undergraduate electrical engineer and my universities notes are not the best, I have an assignment in which I do not want the answers to but the question has given me the oxide capacitance, ...
0
votes
1
answer
806
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How do you choose the exact width for PMOS/NMOS in your design?
I'm designing the following function:
$$F = ((A'+B) \times (A+B'))'$$
This is the schematic:
Now I know that in general PMOS width has to be 2-3 times that of NMOS width. But how do you decide ...
- 115
1
vote
2
answers
499
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PMOS carrying more current than NMOS?
I dont know what is happening here.
Both PMOS and NMOS have
W=100*270nm
L=180nm
Vgs=1.8v
vds=1.8v
while NMOS is carrying only 14.19mA current, How can PMOS carry 15.97mA for the same size and ...
1
vote
2
answers
1k
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Why MOS transconductance is not zero even when drain current is constant?
I am trying to plot transconductance \$ g_m \$ of the MOSFET below when \$ V_{gs} \$ varies from 0 to 1.8V.
The schematic is below. The drain current is fixed to a constant DC value 1uA by a current ...
- 1,649
0
votes
1
answer
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Bias common source diode connected load
To amplify small signal we need to bias M1 and M2 in saturation mode.
Obviously, M2 is always in saturation because Vgd = 0.
However, how should I bias M1 in saturation?
- 1,649