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Old 26th March 2010, 05:50 AM   #1
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Default anyone have any experiences with low wattage chip amps?

Like the little says, any input on low powered chip amps in the 1-10 watt per channel range, I have been looking at some of the low wattage Philips chips and would like some opinions or reviews of amps in that power range.
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Old 27th March 2010, 01:33 PM   #2
sasmit is offline sasmit  India
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Quote:
Originally Posted by AltecDarpa View Post
Like the little says, any input on low powered chip amps in the 1-10 watt per channel range, I have been looking at some of the low wattage Philips chips and would like some opinions or reviews of amps in that power range.
You could look at TDA1010A or TDA 2020A beautiful sounding IC's ..albeit quite old. These have been around for 15years now.

http://www.selectronic.fr/includes_s...s/TDA1010A.pdf
http://www.datasheetcatalog.org/data.../378196_DS.pdf

I had made an amp based on TDA1010A somewhere around '97 and it sounded really nice to me back then
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Old 27th March 2010, 11:42 PM   #3
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Or you could just as well use a 'normal powered' chipamp with reduced supply voltage. At the specified minimum of 10 V the LM1876, 3875, 3886, etc. deliver 3,5..4 W into 8 Ohm. The TDA2030 and its brothers can work with even lower supply voltages.
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Old 27th March 2010, 11:52 PM   #4
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I've used the TDA7350 for a while,in an amp that I built.. not a bad little chip.
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Old 28th March 2010, 12:07 AM   #5
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Quote:
Originally Posted by sasmit View Post
You could look at TDA1010A or TDA 2020A beautiful sounding IC's ..albeit quite old. These have been around for 15years now.

http://www.selectronic.fr/includes_s...s/TDA1010A.pdf
http://www.datasheetcatalog.org/data.../378196_DS.pdf

I had made an amp based on TDA1010A somewhere around '97 and it sounded really nice to me back then
TDA2020 sounds gash and is ancient. I've had a few amps with this chip as my dad used to design hifi in the 70s with them.
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Old 28th March 2010, 12:54 AM   #6
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They're OK, but they tend to be older designs, and consequently not as good as more recent ones. There are some newer ones, often some kind of technology or (SMT?) packaging change, not necessarily major and possibly involving some trade-offs. That's about as much as you can say as a general rule...

T-amp (TA2024) is a good amp operated in that power range... but it's not in production, so although you can get them, not necessarily what you would choose for a new commercial design. A comparatively difficult build, you can get them (built, cheap, stereo) so it gets my recommendation for DIY. Only things, will it fit, does it match your supply?

w
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Old 28th March 2010, 03:52 AM   #7
johnr66 is offline johnr66  United States
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TDA1517 6 watt x 2 stereo amp. Vs 14.4 volts. Expect around 4 to 4.5 watts of "clean power (before clipping) with 4 Ohm loads.

TDA7267A 3 watt x 1 mono amp. 2.3 clean watts with 8 Ohm load at 14.5 Vs.

Both chips are super easy to use thanks to fixed gain, complementary output stage (not bootstrap cap needed for full output swing) and no boucherot cell. They sound fine to my ears, although I don't profess to have "golden" ears. Scoping the outputs, I was not able to cause instability as long as good circuit board layout is used.
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Old 21st January 2012, 10:58 PM   #8
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Tda1517p or tpa3110 (can u found
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Old 22nd January 2012, 05:18 PM   #9
johnr66 is offline johnr66  United States
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TDA7267A Very low part count, sounds great, highest output swing at given supply voltage without bootstrap cap. Said to use fully complementary output design. Fixed gain.

TDA1517 Very low part count, great sound, high output swing, two amps in one IC (stereo) SIP or DIP versions.

TDA2003 5 pin easy to use chip amp. Handles down to 1.6 ohm loads in single ended mode. High output swing without the extra parts (bootstrap). External negative feedback loop for adjustability.

TDA2050 easy to use, dual or single supply setup, sounds fantastic, Works on low voltages. External negative feedback loop for adjustability. Better output swing than the older LM1875 or the TDA2040.
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