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Old 13th July 2012, 07:58 PM   #1
Bare is offline Bare  Canada
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Default newby help for ta2020 chip

Wanting to try assembling an Amp from this chip .
No.. I don't have a PCB But have nothing against using point to point wiring... space is not an issue.
Where can I be directed to the chip pinouts and schematics for building my 2020 amp?
Or is that asking perhaps a too much?
thanks
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Old 13th July 2012, 08:06 PM   #2
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Can post something up for you on Monday when I get back to work. In the meantime, Google device name for datasheet and design ideas. Great chip, you won't be disappointed, even point to point wiring it!
Andy.
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Old 13th July 2012, 08:53 PM   #3
mjf is offline mjf  Austria
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hello.
perhaps this..........
TA2020 Datasheet catalog

.....and you can use the search button in this forum.
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Old 13th July 2012, 09:50 PM   #4
Bare is offline Bare  Canada
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Brilliant!
Gentlemen .. thank you.
Wasn't fixated on point to point, but it works well for a quick build up where space compression is not the primary criteria.
Now I can study these while awaiting HK post. The chip is $5 delivered (alegedly worldwide) by the way :-) . I can post the vendor address if someone wants it
ps; Did the search 'thing' several times, with small results.

Last edited by Bare; 13th July 2012 at 09:53 PM.
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Old 13th July 2012, 10:35 PM   #5
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90% of info you need is in the datasheet tbh as it shows a schematic + design guide.

I redesigned it to use smt components where possible (for optimal placement) in Altium and came up with a two layer prototype PCB. I also wound some multilayer inductors for the outputs as air-cored are supposedly better.

I will pass on as much info when I get back into work & if I forget, badger me with a PM kick in the bum-cheeks.

Get these little puppies right and you won't be disappointed with the results!

Andy
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Old 16th July 2012, 08:23 AM   #6
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As promised, schematic:
Click the image to open in full size.

Altium allows for 3D viewing of PCB and components (if modelled):
Click the image to open in full size.

Use of SMT components in this case allows for placement exactly where needed with minimum track lengths:
Click the image to open in full size.

GL with that then,

A
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Old 17th July 2012, 02:01 AM   #7
Bare is offline Bare  Canada
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Great! thank you for that information.
Looks Daunting.
Sadly I don't posses an SMD oven so Tiny surface mount bits are a non starter.
No matter, it's erm...problematic... to use smd's with point to point wiring:-)
While here I'm wondering IF this 2020 Type amp is suitable as a HF amp in an active crossover (a bespoke design) setup for my Tannoy Monitor Golds??
LF pretty well demands a 20+ Amp capable amplifier so that's clearly not a suitable fitment.
But HF use is possible?.. Or not?? Opinions/advise?
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Old 17th July 2012, 07:43 AM   #8
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You don't need an SMD oven to solder surface mount components, just a soldering iron. Regardless, just because I'VE used surface mount does not mean you have to!

Could still be point to point wired using through-hole components.

A
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Old 17th July 2012, 04:35 PM   #9
Bare is offline Bare  Canada
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OK :-) I did have to solder on 12! very tiny and surprisingly pricey Op amps during my Active Crossover project. I did manage however and they do work.
Eye strain and stress I'm not keen to replicate though :-)

Now to amass the parts for your circuit drawing.. of which I Thank You again for.
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Old 28th August 2012, 02:10 AM   #10
Bare is offline Bare  Canada
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I'm readying to assemble this diy Project.. However I'm a bit confused by the differences and added complexities on the yellow diagram, as opposed to the Datasheet circuitry.
Could you help me figure this out?
There are few star grounding looking diagrams But I've not deduced how/what let alone where they connect to the chip
Also the appendages to Pin 11 confuse.
As well as the wee bit of circuit adrift on the right of the diagram, which has a yellow LED. OR.. what the red led does
Or for that matter I'm finding it difficult to deduce where the Power switch and green LED connect to on the Chip.

Yes a newbie.. just needing a wee bit of hand holding... I hope.

Last edited by Bare; 28th August 2012 at 02:14 AM.
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