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-   -   Spice models LM3875 and TDA2050 (http://www.diyaudio.com/forums/solid-state/10682-spice-models-lm3875-tda2050.html)

Jarno 3rd February 2003 02:29 PM

Spice models LM3875 and TDA2050
 
Hello all,

Does anybody have models of these two power opamps?

Greetings,

Jarno.

halojoy 3rd February 2003 04:50 PM

Re: Spice models LM3875 and TDA2050
 
Quote:

Originally posted by Jarno
Hello all,
Does anybody have models of these two power opamps?
Jarno.

Jarno
I have never SPICED, myself.
I read data, datasheets, looks at curves in diagrams.
Then I use my calculator.
And lots of paper and pen.

Spice or not, we still can get some (disappointing!) surprises,
when we do the real life setup.

SPICE for TDA2050/TDA2040 LM3875/LM1875?
I am 100% sure there are several guys here at Fourm,
that have such data.
I bring your thread to top now - then we see
"if any fish catch the bait" ;)

halo - the fisherman :D :D :D :hot:

Netlist 3rd February 2003 05:12 PM

Re: Spice models LM3875 and TDA2050
 
Quote:

Originally posted by Jarno
Hello all,

Does anybody have models of these two power opamps?

Greetings,

Jarno.


Here's all the data from National regarding LM3875:
http://www.national.com/pf/LM/LM3875.html

and here for the TDA2050:
http://us.st.com/stonline/books/pdf/docs/1461.pdf

Spicy-models, indeed, but no spice data.
Hugo - whishes he could caculate:bawling: ;)

Philo 3rd February 2003 06:58 PM

A model of these ICs would have to be generated by someone using data unavailable from the company. The "discrete equivelant" is shown but but I think some of the necessary values are missing.

blmn 3rd February 2003 08:49 PM

Jarno,

I think I have one of these ICs in my simulator. When I come home today I'll try to obtain the spice model for you.

BTW, you guys have seen the thread about a free and UNLIMITED simulator + pcb (AutoTRAX eda)? I saw it yesterday and downloaded the soft. At a first galnce it seemed very nice.

regards,

blmn 3rd February 2003 11:06 PM

Jarno,

Bad news. I tried to export a spice for LM1875 and the Electronic Workbench returned a blue screen on windows!!

But I found this link - http://eu.st.com/stonline/books/pdf/docs/8665.pdf - and I suppose it will be useful for you.

regards


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