| Mr. Triatic |
hi guys (and gals)!
i have scanned the net for information/specs. on these devices (opamps) ...but nothing, does anyone have any clue regarding the specs.?
those little fellows are encapsulated in 8 pin DIP package.
Are they dual opamps or just single ones?
any HELP would be appreciated
kind regards
/Ludvig. |
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| Tube_Dude |
Hi Ludvig!
They are dual op amp and bipolars...i never find nothing about them in the net.
They are very much used by the majors japonese manufacturers.(Pioneer , Onkyo,etc) in the phono input stage!
Is not much , but is all i know!! :) |
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| Mr. Triatic |
wonderful!
then i probably can replace them with a dual OPA2134...?!
the victim is a Denon DA-500 DAC, i ripped off the cover and spotted those opamps...
Cheers mate, thanks for the quick reply!
/Ludvig. |
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| EIRA |
| Hi Ludwig... I planned to change these M5218 as well. Did you do it (back then in 2002)? and did it work out satisfactory? |
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| Leolabs |
| If i was not wrong,datasheets of both are available at www.datasheetarchive.com.Personally for replacement of them,i will try any dual audio OP-AMP as long as pins compatibility is not an issue.:) |
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| macboy |
| You'll have more luck searching for M5218 (with A, AF, or AFP suffixes) and NJM4570 or JRC4570. |
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| EIRA |
I found the datasheet here: http://www.datasheetarchive.com/sea...5218&sType=part
I changed the 5218 (slew rate 3 V/us) by and OPA2134 (slew rate 20 V/us) and put two larger capacitors in the power supply. A great improvement. more power in a shorte base, more open sound, more solid, softer mid. Absolute worthewile the 10 Euro's I paid for the 2134! |
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