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Author Topic: anyone know the monte carlo method A/D convert  (Read 1023 times)
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DreamCat
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« on: June 01, 2011, 12:12:10 12:12 »

I just saw it from a book, but not detailed. anyone have more?

it use a monte carlo generator to compare with input voltage, and count times of the high level ...

dose it can replace with an analog noise generator ?

btw, I just done a A/D's simulation, it employ a built-in comparator of AVR chip (AT90S2313, i have about 20 pcs),  a capacitor and a CCS. it have not too bad liner.. error rate between 0.005V~0.05V,  I will wire it and test on my breadboard.




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ktek
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« Reply #1 on: June 19, 2011, 06:46:18 06:46 »

hello
I suggest you ask in the forum this doc

http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?tp=&arnumber=1703915
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optikon
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« Reply #2 on: June 29, 2011, 01:42:12 01:42 »

I am familiar with the concept of Monte Carlo simulation.

Can you be more clear about what you are asking?

In short, Noise analysis and monte carlo are two different things.

Monte Carlo uses distributions to randomly change values in your circuit to see the effect of things like part tolerance.
In large numbers of runs and including worst "corner" cases, you can gain confidence that your circuit will remain working properly
despite part tolerances. It is a statistical analysis and measurement technique.

Noise analysis will replace each component with an equivalent noise model and find for you the output noise due to the noise of the particular component.
For total uncorrelated noise sources, you may vector add the individual results (RSS) for a total output noise answer.


These are very *Brief* descriptions.
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solutions
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« Reply #3 on: June 29, 2011, 04:55:30 04:55 »

Just tie the analog and digital grounds together, not at a point, but in as big of a loop as you can make on the board....at that point you are throwing the dice as to whether the ADC will work or not.
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