Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Does anyone know the upper limit of the number of points that user can specify for vpwl model (Cadence analogLib)?
For my own testing, it can only be upto 50 points. Is there anyway to extend that? Or is this the upper limit already?
Thanks!
Added after 3 minutes:
PS. If trying to set the...
Yes. You are right. In fact, to measure the gain and BW of the amplifier, I think simple ac analysis will do. The reason why i need transient noise is that I need to show the results are indeed random bits, i.e. '1' or '0'.
As the input noise source, it was specified to be thermal noise of...
Thank you so much!
Well, in fact, I'm trying to make use of thermal noise to build a random number generator.
Added after 1 minutes:
amplify thermal noise and pass through ADC to get random bits
Added after 2 minutes:
However, noise is hard to modeling. And if over-estimate the input...
Do you think the noise analysis and transient noise using the same algorithm to calculate noise? If so, i think i can use noise analysis to get the frequency information directly.
Re: Is the resistor model in analogLib of Cadence noise-free
Well, i think i've got the meaning of the "Generate noise" option. If I put "no", the transient noise simulation will give zero as a result.
Added after 1 hours 2 minutes:
Well. Here's how i did this simulation. Maybe anyone can...
Re: Is the resistor model in analogLib of Cadence noise-free
Danke schön!
You guys are amazing!!!
Added after 2 minutes:
"The analogLib res resistor owns a Generate noise? option. By default it doesn't produce noise, but the checkBox may be set to yes: "
I've tried this one, but even if I...
Ya. That's what I've done just now. And it's been proven that transient analysis doesn't include noise.
Really thank you a lot!
Added after 1 minutes:
But for the noise source you mentioned, em... do you have any idea how i can modeling the thermal noise of a resistor?
To analysis a simple differentiator build from an op amp with a resistor R and a capacitor C in the negative feedback path, when can i simply assume the capacitor being shorted? In that case, is this configuration equivalent to a shunt-shunt-feedback transimpedance amplifier?
Thanks. [/img]
Hi, guys! I'm now trying to design an amplifier to amplify thermal noise of a resistor, say, 1GΩ. I'm quite new to this topic as well as the software-Cadence. The simulation is supposed to be done by Spectre. But how can I simulate the thermal noise? Can anybody help?
Thanks a lot!
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
