Anyone aware where can I find SPICE models for MAX6126, MAX6250 etc? I searched a lot and could not find. If anyone knows, can you please share the link/file?
Best Answer
These are complex devices containing many transistors and components, so any SPICE model will be a macro model, made up of voltage controlled currents sources, Current controlled current sources , Voltage controlled voltage sources etc. etc. and the only people who can do that reasonably are the designers themselves.
Look on the Maxim website for these models, if they don't have them look to someone who second sources these parts and might have done it. The company that is best at this is LT itself so I'd suggest seeing if there is a close match and then it would be likely that LT has these devices in the library for LTSpice.
The LTC1065 is 5th order Bessel lowpass filter in switched-capacitor technology. You are asking if it is possible to create a SPICE model by yourself - and my answer is: In principle - yes
However, I would not recommend even to start such a project. Surely, it is a lot of work and it requires a deep knowledge of filter theory as well as switched-capacitor techniques. Use your time for other interesting tasks.
EDIT:
I think, it is also important if you are interested in a model which can be used in the time domain (TRAN analysis) and/or in the frequency domain (ac analysis). In the latter case, it seems to be a bit easier to model the filter. In this case, you need no switches but time-continuous equivalent circuits which are available.
More than that, are you interested in particular in the LTC chip or - in general - in a 5th order filter?
Best Answer
These are complex devices containing many transistors and components, so any SPICE model will be a macro model, made up of voltage controlled currents sources, Current controlled current sources , Voltage controlled voltage sources etc. etc. and the only people who can do that reasonably are the designers themselves.
Look on the Maxim website for these models, if they don't have them look to someone who second sources these parts and might have done it. The company that is best at this is LT itself so I'd suggest seeing if there is a close match and then it would be likely that LT has these devices in the library for LTSpice.