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#1 |
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Happy Chappy
diyAudio Member
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Hi, can anyone recommend a op amp from CPC | CPC - Over 100, 000 products from one of the worlds leading distributors of electronic and related products. for CMOY headphone amp ?
It’s my first project and I can get everything for it from CPC except the Burr-Brown OPA132/134 series op-amps which is in the tutorial .. “If you’re a raw newbie, I recommend that you try one of the Burr-Brown OPA132/134 series op-amps” What I have done is match up the specs from mouser with the ones at cpc and not failed except the op amp. I don’t want the one part from Mouser as its £10 for shipping I’d rather spend that on better partsm also I only live 6 miles from CPC and I could be putting it together this weekend.. like if CPC have an op-amp that is a better spec etc. but being a total noob I’m struggling to match one up.. could someone help please ? This is a link to their selection Your Search Results | CPC |
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#2 |
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diyAudio Member
Join Date: Mar 2011
Location: St Louis, Mo
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Just going from memory, didn't the original version of that circuit use the OPA2134? I think your supplier stocks that part. One logical upgrade within T.I.'s product line would be the OPA2604. In terms of pure value (price/performance tradeoff) in an application like this it's hard to beat the NE5532. I suspect the National LM4562 would also perform nicely. If you want a part with an absolute rock-bottom price - just to plug into the circuit and make some noise, proving that you haven't done something stupid with the wiring - try a TL072.
That particular design is quite straightforward and component selection is not especially critical. At last count I think there were about a jillion blogs, tutorials, and discussion threads about it. If you seed a search engine with "cmoy opamp substitute" you will probably encounter many more suggestions. Dale |
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#3 |
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Happy Chappy
diyAudio Member
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I went for a ANALOG DEVICES|AD817ANZ|OP AMP, HI SPEED, DIP8, 817 | CPC
ANALOG DEVICES - AD817ANZ - OP AMP, HI SPEED, DIP8, 81 hope this works
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#4 |
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diyAudio Member
Join Date: May 2006
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Ive tried the 4562 in a headphone amp , while it sounded good It couldn"t drive a 32 ohm load without paralelling them .....
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#5 | |
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Happy Chappy
diyAudio Member
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Quote:
LOL sorry for a total noob like me that meant nothing.. but I intend to get this all down in a website to help total n0obs understand the speak |
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#6 |
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diyAudio Member
Join Date: Apr 2011
Location: Seaside
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Beyond a certain level of performance it does not matter that much. OPA 2134 is a very good approximation of a wire with gain (or unity gain with impedance lowering if that is what you need, or anything in between).
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