This is actually two unrelated questions: "nMOS transistors pass 0's well but pass 1's poorly" and "pMOS pass 1's well but 0's poorly". What exactly do these statements mean and why is it so? An enhancement-mode MOSFET conducts best when its gate voltage is significantly different from the channel voltage. The exact value is known as the "threshold voltage". For an N-channel …

2014年9月14日 · I have a a question on forming of the inversion layer in NMOS. More specifically, please refer to the following figures The negative ions (in-mobile) are due to the the accumulation of the positive charges at the gate metal plate that pushes the holes (mobile carriers) downward. This is the first figure.

When a channel exists in a MOSFET, current can flow from drain to source or from source to drain - it's a function of how the device is connected in the circuit. The conduction channel has no intrinsic polarity - it's kind of like a resistor in that regard. The intrinsic body diode inside the MOSFET is in parallel with the conduction channel, however. When the conduction channel is …

2018年11月26日 · The NMOS/PMOS SPICE primitives are for monolithic (integrated circuit) MOSFETs, and other SPICE-based software requires a subcircuit to properly model a discrete power MOSFET.

2022年1月29日 · Here is my circuit in Spice: I want to do a simple analysis of the NMOS like this: What kind of command should I use?

2017年5月13日 · Can anyone explain me how I can find gm from this schematic below (for a nmos transistor)when VGS=6V and VDS=6V?

The text I read assumes the source of the NMOS connect to ground, while a positive voltage is applied at the gate. Because the source is grounded, VGS (voltage between gate and the source) = VG (voltage of the gate).

2015年11月26日 · I understand how the logic levels of an NMOS work with a pull-up resistor. 1. What would happen though if there was no resistor attached? (What would the logic levels look like and why?) 2. What ...

2018年12月18日 · By increasing the P-doping in an NMOS, threshold voltage is increased. How does it happen? And why? And what elements do they use for this? can anyone give me a reference or explain?

2020年10月17日 · I notice that in solution manuals to problems like these, when the gate is shorted to the drain on an NMOS, Vds = Vgs. So Vds >= Vds - Vtn, making the MOSFET always in saturation.