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Old 3rd February 2003, 02:29 PM   #1
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Default Spice models LM3875 and TDA2050

Hello all,

Does anybody have models of these two power opamps?

Greetings,

Jarno.
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Old 3rd February 2003, 04:50 PM   #2
halojoy is offline halojoy  Sweden
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Default 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
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Old 3rd February 2003, 05:12 PM   #3
Netlist is offline Netlist  Belgium
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Default 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
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Old 3rd February 2003, 06:58 PM   #4
Philo is offline Philo  United States
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Location: Ever sunny San Diego
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.
__________________
Philip
"If you didn't make it with your own two hands, its not really yours".
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Old 3rd February 2003, 08:49 PM   #5
blmn is offline blmn  Brazil
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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,
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Old 3rd February 2003, 11:06 PM   #6
blmn is offline blmn  Brazil
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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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