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Old 1st March 2011, 11:09 AM   #1
FNQ is offline FNQ  Australia
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Default OpAmp Advice Needed Please Guys

Hi folks. I was advised to replace the two OpAmps in my Pioneer PDS802 with two of the high quality LM4562 which are DIL 4 pins per side. They arrived today and with enormous enthusiasm I took off the cover and searched for the two OpAmps to remove. After many checks in every little nook and crannie, I did not find any OpAmps of that configuration. What I DID find were two "Single line" ic's labelled NJM5532SD.
Could you please tell me if I am supposed to somehow adapt the LM4562 to replace the 5532SD's or have I ordered completely incorrect items.
If incorrect, could a member please let me know what is the best IC to buy for replacement of the 5532SD's.
I have just earlier today completed replacement of ALL electrolytics and using the analogue out-which is my preference-I got better impression of dynamics and noticeably increase in same given volume as set before the re-cap job. So I am definitely going thru with the works (as funds permit over time that is!!) Thanks guys..
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Old 1st March 2011, 11:15 AM   #2
Mooly is offline Mooly  United Kingdom
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The 5532 is a common dual opamp, the LM4562 it's successor really. As long as the package is correct (DIL or SMD) then it's a straight swap.
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Old 1st March 2011, 11:17 AM   #3
Mooly is offline Mooly  United Kingdom
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Just re reading your post... you say SIL (Single in line). If so they won't fit.
Do they look like this ?
Google Image Result for http://www.donberg.ie/pics/b/ba_15218n.jpg
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Old 1st March 2011, 11:33 AM   #4
FNQ is offline FNQ  Australia
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Mooly the link you gave shows the configuration of what is fitted in the player-all pins in one line.
The LM4562 has 4 pins per side and is about 1/4 of an inch or so long.
So question is Can I get a LM4562 in the same configuration as the IC on your link?
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Old 1st March 2011, 11:41 AM   #5
Mooly is offline Mooly  United Kingdom
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My data sheet suggests not.

tbh the SIL package is a bit rare these days. If you are into making PCB's it's easy to etch some adapters or buy some (check the connections are correct first and they are for dual opamps). Found these.
Parts & kits

You could even hard wire them if needs be I guess.
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Old 1st March 2011, 11:58 PM   #6
Minion is offline Minion  Canada
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You can easilly do an adapter , even on strip board .... I did some 2 single opamp to one dual opamp boards a few years ago and they worked well ....
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Old 2nd March 2011, 04:01 AM   #7
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Minion yeah I think I will do a hardwire. But tell me this if you will..The LM4562 has pins 1 to 8 ......yet the 5532SD has NINE pins..????
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Old 2nd March 2011, 06:31 AM   #8
Mooly is offline Mooly  United Kingdom
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The nine pin package has pins 1 and 9 internally connected.

Look at the data sheets here (the packages) and make sure you understand
Imagine cutting off pin 1 and then renumbering all the remaining pins 1 to 8 (rather than the original 2 to 9)

Your 9 pin here (scroll down to the block diagram)
http://www.datasheetcatalog.org/data...nic/AN6551.pdf

Standard dual opamp 8 pin dil,
http://www.datasheetcatalog.org/data...A_SA5532_3.pdf

Edit... You may need to physically link with wire 1 and 9 on the PCB if circuit continuity depended on the "wire" in the opamp. A quick look at the PCB should confimr whether that's needed.
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Last edited by Mooly; 2nd March 2011 at 06:34 AM.
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Old 2nd March 2011, 07:34 AM   #9
FNQ is offline FNQ  Australia
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Ah Mooly you are a lifesaver mate. I looked at the diagrams per your links and "By Jove I think I've got it".... Many thanks for yur gr8 help. Cheers
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Old 2nd March 2011, 07:37 AM   #10
Mooly is offline Mooly  United Kingdom
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That's good.
Do you know how you will fit them ?
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