|Chip Amps Amplifiers based on integrated circuits|
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|7th October 2006, 03:56 PM||#1|
Join Date: Jan 2005
LM3875 spice - first try
It's pretty ropey model based on the LM386; transistors may be connected incorrectly, transistors are missing, uses LM386 model for pnp and npn transistors., bias currents are inorrect..
It seems to oscillate very easily!
.asy file in C:\Program Files\LTC\SwCADIII\lib\sym\Opamps folder
.sub file in C:\Program Files\LTC\SwCADIII\lib\sub
.asc file in C:\Program Files\LTC\SwCADIII
Did anyone get any further making a LM3875 model ?
|7th October 2006, 06:36 PM||#2|
Join Date: Dec 2005
Location: the north
I was almost SURE National should have spice model
for LM3875 for download.
But looks like NOT.
there has got be several persons that has done such a model
or for some similar IC by themselves.
I read somewhere a person used model of OPA541, Burr-Brown for LM3875 simulations.
Here is someone that did a spice model of LM3886, in January 2004
LM3886 Spice Model done
And he tried to use this information,when doing his model:
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