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Chip Amps Amplifiers based on integrated circuits

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Old 9th May 2013, 02:46 PM   #1
The Dastardly Dad of Three
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Default Tda2030 his tory

Ok so chipamps are not really my thing but I just saw a post on a tda 2030 amp....

Doesn't time mean progress for integrated electronics? This is a chip amp from more than 20 years ago !!

So that got me thinking
What's the history of this ilittle pentawatt ?
Is it surviving still because of momentum or because theese devices have actually got some nice features? If so what are they ?

I recall building some off Thomson datasheets in my youth and they sucked then. So I'm a little surprised they are stil around.
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Old 9th May 2013, 02:59 PM   #2
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Quote:
Originally Posted by kasey197 View Post
I recall building some off Thomson datasheets in my youth and they sucked then. So I'm a little surprised they are stil around.
Yes, I did them too . Normal, bridge and superbridge !
But to take the full picture, you should describe also the rest of the system...
'cos nothing plays alone.
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Old 9th May 2013, 03:32 PM   #3
The Dastardly Dad of Three
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Well I guess I had better hf hearing then.
And maybe more testosterone.
And 3-head tape decks.
And some unmemorable Japanese 3 way spekaers that had treble control pot on the front.

I had 2N3055 based ap then that sounded nice even with the handicaps above. The 2030 chipamp.. Well let's just say that it was a special kind of sound that may have suited a special kid of person. Too bad that didn't include me,, caveat though I did not have scopes or analyzers then other than the aural kind .....
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Old 9th May 2013, 06:14 PM   #4
JMFahey is offline JMFahey  Argentina
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Fact is they are so good and practical to use that they are still an Industry standard, go figure.
Only problem is that they didn't supply as much power as your 2N3055 based amps.

But as far as distortion, flatness, etc. they beat them big way.
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Old 10th May 2013, 04:57 PM   #5
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Ok fair enough ... Just to satisfy curiosity - anyone has some idea of when these were introduced ?

I think the LM380 was in the very early 70s maybe 71/72 - and the 2030 was sometime later?
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Old 10th May 2013, 07:22 PM   #6
JMFahey is offline JMFahey  Argentina
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The GENIUS who invented the TO220 5 pin power amp was Milan based ST Engineer Bruno Murari.
All others are evolution or copies (sorry, "reverse engineering" ) of his designs.

Like most great men, he's too modest, so his story is told by others, even his competitors:

LM383

http://www.idea2ic.com/LM383/_Milan_...e_Artisan_.pdf
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Old 11th May 2013, 01:43 PM   #7
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Thank you - this is really fascinating. The human stories behind the little gems of their genius....

I wonder when it was that we stopped celebrating science and the people who make progress possible.
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Old 11th May 2013, 05:43 PM   #8
JMFahey is offline JMFahey  Argentina
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When we started worshipping TV "celebrities", Rappers and anti-heroes in general.
Typical of crumbling empires
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Old 11th May 2013, 11:36 PM   #9
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I wonder if there is any real difference between TDA2030 and TDA2030A. Looking at the data sheets there is a few volts difference in the rail voltage and that's about it. Any one vendor much better or different from the rest?
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Old 12th May 2013, 01:05 AM   #10
JMFahey is offline JMFahey  Argentina
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Production logic and costs say they are probably made using same dies and process and the better ones (there's always spread in the specs) gain the "A" label.
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