Questions tagged [nmos]

Question 1

I am trying to calculate and simulate the output resistance of a stacked NMOS transistor used as current mirror load and I have a few doubts about hand calculation and simulation setup. The circuit ...

Question 2

It is apparent to me through simulations that the effect of a Cascode transistor on a current mirror actually works as intended, along with the high-level intuition. But, I can not find a reasonable ...

Question 3

I have the following circuit in Virtuoso: I've set I1 = 5uA, VCC = 2V, and Vb2 = 0.939V. Here's the graph of IOUT vs VOUT (running a DC sweep over VOUT from 0-2V): We can see that until around VOUT =...

Question 4

I went through an overvoltage protection circuit (schematic image attached) that uses a TL431, 2N7002 NMOS, and a PMOS (IPD380P06NMATMA1). The circuit is designed for a 13 V threshold. From my ...

Question 5

I have the following circuit: And I plotted the graphs of gm1, gmb1, and ROUT2 (in green) as I do a DC sweep on VIN from 0V (VSS) to 2V (VCC). (In Virtuoso, I defined ROUT2 as 1/gds2, which was ...

Question 6

I have the following circuit: I want to sketch the VOUT vs VIN for VIN from 0-2V. I know that Vg2 = 619mV, and VCC=2V. I start by checking M2 (as I have fewer variables with it). VGS2 = Vg2-0 = Vg2, ...

Question 7

I have simulated nfet_01v8 in Xschem using Ngspice To find \$\lambda\$ I need to obtain \$...

Question 8

I have an argument with a friend regarding the voltage between N and P and the voltage at OUT. I say that for A = '1' and B = '0': If Kn > Kp, so the voltage between the NMOS and PMOS is Vdd-Vtn ...

Question 9

I'm reading Microelectronic Circuits, 7th edition by Sedra/Smith and on the section for channel length modulation of an NMOS, it says the following: I'm trying to justify why the \$v_{DS}-v_{OV}\$ ...

Question 10

I am currently using an Arduino board and I need to connect an external 12V digital signal source to it. I have done it using an N-MOS. The external switch can provide 12 V to the gate pin. I am using ...

Question 11

I've been reviewing the fundamentals of analog transistor design, and recently ran into some confusion when introducing PMOS devices alongside NMOS. My typical design approach is to start from the ...

Question 12

I'm working on a circuit that converts a 3.3V PWM signal to 5V (level translation). I'm trying to implement this using a single MOSFET. The circuit works fine at lower frequencies, but at higher ...

Question 13

I'm a beginner to LTspice and I'd like to know where I'm going wrong. When I run .tran 10ms and plot Vin and Vout together I get flat DC lines at different offsets. ...

Question 14

I have a relay based audio line-out switching circuit. To drive the relays I was thinking of using a switch with an nMOS, but the issue was that when the switch is floating, both nMOS can conduct. I ...

Question 15

So the first part of this question How to switch power to a sensor has been asked in a few posts before (e.g. here). However, I want to find out a more nuanced part of this question. The setup ...

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Questions tagged [nmos]

Current Mirror: Output resistance of stacked MOS used as current source

NMOS Cascode Current Mirror Early Effect

What causes the ROUT of this NMOS cascode circuit to fall after around VOUT=1.5V?

Overvoltage protection circuit using TL431, 2N7002, and PMOS not giving expected output in LTspice

Why does the plot of ROUT2 in this NMOS circuit look like this?

How to sketch VOUT vs VIN in this simple NMOS circuit? in DC - Large signal

Skywater 130nm NMOS parameters

NMOS and PMOS in a series with VDD as voltage source, what will be the voltage between them?

NMOS Channel Length Modulation

Using a PMOS as a level shifter from 12V to 5V

How to control DC operating point of NMOS cascode amplifier with PMOS Load?

Level translator for a PWM signal

LTspice Common Source MOSFET Amplifier Shows Flat lines for Vin and Vout

Cascading nMOS to replace pMOS?

Switching power to a sensor: High-Side or Low-Side switching

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