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Other CAD Tools >> Unmet Needs in Analog CAD >> Real World Output
https://designers-guide.org/forum/YaBB.pl?num=1167381543

Message started by avlsi on Dec 29^th, 2006, 12:39am

Title: Real World Output
Post by avlsi on Dec 29^th, 2006, 12:39am

Can we come out with some new simulation setup,which can give the output taking all factors into consideration.

Like for an opamp,

Common Mode signal,differential signal, noise,power supply coupling,transient behaviour. This will help us more than just check each one individually.

It was just an idea.

Comments are welcome.

Title: Re: Real World Output
Post by Croaker on Jan 12^th, 2007, 4:03pm

With all types of software the trend seems to be to give the user a very generic set of tools, which, if they're lucky, allows them to build what they want. Also, they'll be able to modify the tools to some extent. Open-source software seems to be the ultimate expression of empowering the user. Then again, the user is only empowered as far as they can program.

As for EDA, everyone is busy writing their own scripts etc. to solve their problems with the minimum headache. You pose an interesting idea though. It would be very useful to have tools which are customized to common, if not specific, needs. People spend a lot of time checking things manually, though scripting languages such as Ocean (part of Cadence tools) can help automate such tasks.

The problem is that there's so much variation in what you can do with circuits that it's tricky to provide much more than the basic types of analysis.

A company called Analog Design Automation did some work on this type of stuff and was acquired by Synopsys. The founder is working on another start-up, though I haven't checked in on them in a while.

Title: Re: Real World Output
Post by weber8722 on Nov 18^th, 2011, 1:51am

I think the idea is good :). One might argue that analog design is so special, but in reality it is not sooo much, just

references for I & V, power-on reset blocks

amplifiers: audio PA, RF PA, op-amps, transimpedance, OTA, VGA, PGA, level-shifters, voltage regulators, buffers, instrumentation amps, comparators, latched- comparators, gyrators, limiters, charge-amps, LNAs,

oscillators, VCOs, CCOs, xtal osc, temp sensors, quadrature generators, frequency multipliers, dividers, random generators, switches, S&H, T&H

mixers, rectifiers, modulators, exp/log-amps, sqr/sqrt circuit, RSSI circuits, pfd, charge-pumps,

sub-systems like filters, PLL, DLL, ADC, DAC, RF receivers, transmitters, SMPS, dc-dc converters

On each and any there are hundreds of good papers, and at the end what counts is power consumption, accuracy, linearity, noise, dynamic range, etc. within usal constraints (costs, load, supply, temperature, technology, time..).

I think it is not that complex ;). Just step-by-step.
However, the major requirement is indeed flexibility 8-).

I think it is like music. The fundamentals are just tones with 20...20kHz spaced & modulated in time created by different means.
Bye Stephan

Title: HerrIvanov
Post by JustPavlov on Jan 25^th, 2012, 8:54am

Subject threatened to be interesting, perhaps the stock chips :)