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Replacement for µPC4570HA-1 opamp?

kotofei

kotofei

permanent gear evolution
Subscriber
Greetings everyone,

I am going to tweak a Luxman R-117 phono stage and one of the things I'd like to do is to replace the NEC µPC4570HA-1 opamp.

This is an old, ca 30 years dual operational opamp and I believe better substitutions could be found. The problem is it's "9-pin in a row" SIP IC rather than 8-pin "regular" DIP (only 8 pins out of 9 are used though).

Anyone knows good 9-pin substitution or perhaps an adapter from 9-pin SIP to 8-pin DIP socket?
 
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BinaryMike said:
This ought to do it: http://cimarrontechnology.com/silsingle-to-dualop-ampadapterpn040701.aspx
Click to expand...

Thansks BinaryMike,

I didn't know such adapters exist at all!

I found this one at the same Website and believe it will be better match: http://cimarrontechnology.com/so8dip8tosiladapterpn060301.aspx

This is SO8/DIP8 to SIL Adapter (p/n 060301) that accepts DIP8 dual opamps. The uPC4570HA is a dual opamp and I would like to replace it with the dual DIP8 one such as OPA 2134. The adapter in your original URL accepts single DIP8 opamps.
 
kotofei said:
Avionic,

The URL you posted is for exactly the same opamp that I have now, uPC4570HA.

Perhaps, you just posted the wrong URL?
Click to expand...

Nope just miss understood your question.Thought you were needing a like replacement..Somewhere I´ve seen dip to sip adapters.Don´t remember where though.
 
HypnoToad said:
Lm4562
Click to expand...

Great choice. That's what I used to improve the Nak TA-4A phono stage.

Since Nak phonostage won over Luxman one by a great margin, it might be LM 4562 "to blame" for this.

Or I might solder a DIP8 socket into the SO8/DIP8 to SIL Adapter in order to roll opamps.
 
kotofei said:
Great choice. That's what I used to improve the Nak TA-4A phono stage.

Since Nak phonostage won over Luxman one by a great margin, it might be LM 4562 "to blame" for this.

Or I might solder a DIP8 socket into the SO8/DIP8 to SIL Adapter in order to roll opamps.
Click to expand...

Sounds like a plan.
 
Sidenote: Be sure to note that the original chip was symmetrical, so you could install it either direction. On the 8-pin adaptor, be sure to align pin-8 of the adaptor with pin-9 on the board. Pin-1 on the board will be empty. ;)

Artie

Edit: Btw, its too bad, I don't see a 7-pin adapter on Bdent's page. I need to do the same substitution to an old TA7136AP 7-pin op amp. :scratch2:
 
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