IC opamp replacement experts please help

[ferninando]

Having hard time finding cross ref of 2 opamps.
1. LM4562NA/NOPB
2. CX21097 (sony)

#2 used in a Sony CDP.
#1 possible plugin replacement?

Can anyone help me?
I AM DESPERATE

thank you

 

[gslikker]

no 1 you can buy at Mouser

 

[ferninando]

wrong answer

 

[ConradH]

What are you looking for? You won't find much better than the 4562, just different. There are lots of parts that are different and will plug in. You could try an NJM4562. I see no data on the 21097 at all so you'd have to say what CDP it's actually in.

 

[gslikker]

wrong answer

http://nl.mouser.com/search/ProductDetail.aspx?R=0virtualkey0virtualkeyLM4562NA-NOPB

enough stock here

 

[ferninando]

What are you looking for? You won't find much better than the 4562, just different. There are lots of parts that are different and will plug in. You could try an NJM4562. I see no data on the 21097 at all so you'd have to say what CDP it's actually in.

thanks conradH. I too cannot get 21907 data. And so I am here.
the CX21907 is in my SONY cdp 302. It is used in the low pass filter at the output.
Id like to compare data of the 20197 with the 4562 to be sure its a match.
Much obliged

 

[w1jim]

Do you have a schematic for the Sony?
If so try to compare the pin outs.
I'd put a socket in and give it a try - but then that's me.

 

[ConradH]

Filters can be fussy about opamps, but this looks pretty simple. I too would put in a socket and try the 4562. Just look for oscillations, as that would be the thing to worry about. The filter slope itself should be OK. Or, try the other well known audiophile approved duals!

 

[ferninando]

Do you have a schematic for the Sony?
If so try to compare the pin outs.
I'd put a socket in and give it a try - but then that's me.

I do and I sure will.

 

[ferninando]

Filters can be fussy about opamps, but this looks pretty simple. I too would put in a socket and try the 4562. Just look for oscillations, as that would be the thing to worry about. The filter slope itself should be OK. Or, try the other well known audiophile approved duals!

Sockets are a must do. I have the svc mnl.
can you give me a hint of the other well known audiophile approved duals. ?
would they be drop ins?
thanks for the help conradH

 

[ferninando]

Do you have a schematic for the Sony?
If so try to compare the pin outs.
I'd put a socket in and give it a try - but then that's me.

pin outs do match, good.

 

[ferninando]

So I ordered a quad of Nat. LM4562s for $13 no shipping.
thanks for the help conradH and w1jim.

 

[ConradH]

Here's some info on other types to think about...

Not a bad list here- http://www.cycfi.com/projects/six-pack/op-amp-shootout/
These people should know a thing or two- https://e2e.ti.com/support/amplifie...gn_notes/upgrading-op-amps-in-audio-equipment
230 pages on the topic!- http://www.diyaudio.com/forums/chip-amps/154106-best-sounding-audio-integrated-opamps.html
SMT is the rule, so you need these people- http://cimarrontechnology.com/audioupgradeadapters.aspx

I just stick with a few parts I know and love, not having the infinite amount of time it would take to test all this stuff!

 

[ferninando]

thanks conrad for the links. just what I like for reference. all my opamp library ends in the 80s when i was working at HP.
I accumulated all the databooks I could get my hands on.. especially the National Linear APP Handbook and Audio opamp handbook. and others.
but soooo many new designs have been produced since then and i simply have not kept up.

So what ARE you fav amps?