"Safe" value of Vgs in sub-threshold design (4.5nUT < Vgs - Vth < -2nUT)?

Hello, Usually, by biasing Vgs < Vthreshold of MOSFET, we can push MOS into sub-threshold region. My curious question is: How much value of Vgs is "good" as a "rule of thumb"? I have referenced...

11 December 2019 1,858 0 View

Discussion about True Random Number Generator (TRNG) - Chaos, noise, or quantum-based TRNG?

True random number generator (TRNG) for secure application in IoT has emerging as a hot topic nowaday (IoT devices + big data). For example in security of money transaction. There are many kind of...

05 June 2018 440 0 View

Voltage-mode controlled DC-DC Converter: Ramp or triangular generator for PWM?

"A time-varying piece-wise linear waveform is necessary for PWM operation. In the case of voltage mode control, a ramp signal is generated inside the controller and used for the time-varying...

08 September 2017 8,063 8 View

Surges in dead-time of PMOS and NMOS power switches (Buck converter) - How to solve it?

There are surges in the current of PMOS and NMOS during dead-time (as in the attached figure). I have several questions: - First, is it serious or bad in my design? And if it is not good, how to...

05 June 2017 2,175 3 View

Should the inductor and capacitor should be measured before simulating DC-DC converter in Cadence?

05 June 2017 7,520 4 View

Any opinion about the choise of opamp topology used in design of LDOs?

Dear all, In design of Low Drop-out Voltage Regulator (LDO), what type of opamp should be used? I usually design LDO with folded cascode opamp and it seems to get matched with the...

09 October 2016 4,002 3 View

Method of sizing power MOS switches in Power converter IC (integrated switches)?

In the design of power converter ICs, sometimes the power switches are not given by the PDK. That means we have to design the power transistors as the switches (NMOS and PMOS). Since the power...

01 January 1970 6,636 8 View

What are hot trends of CMOS analog integrated research topics in near future

I am curious what could be hot research/study topics in the fields related to CMOS integrated circuits (both analog and digital). My specific questions should be: 1. At device level: - What are...

01 January 1970 721 6 View

"Local feedback" concept in Opamp and OTA

Dear, In compensation networks, we use OTA and Opamp as EA in DC-DC converters (also another applications). The different between them is the physical connection of the compensation network with...

01 January 1970 2,134 2 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

What techniques can I use to determine the miscibility of polymer blends?

The term miscibility refers to the single-phase state in thermodynamics. I do not mean the compatibility of different components. To determine the miscibility I know several techniques such as...

03 March 2021 4,107 4 View

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View