Does anyone know somewhere that has stock of genuine JRC5534DD?
Mouser and Digikey etc are showing them as 'no longer manufactured'.
I should add that I'm not interested in 5534's produced by TI, On-semi, Philips or Signetics.
Thanks
Mouser and Digikey etc are showing them as 'no longer manufactured'.
I should add that I'm not interested in 5534's produced by TI, On-semi, Philips or Signetics.
Thanks
JRC is a wholly owned subsidiary of --Nisshinbo Holdings Inc which is also Japanese owned.
I was going to say try direct from Japan but it seems several Japanese audio chip manufacturers were recently burnt down .
This website is saying they sell---and quote --- " the JRC5534DD parts manufactured by JRC are available at"------
JRC5534DD JRC Integrated Circuits (ICs) - Jotrin Electronics
The company say -yes we are Chinese but a distributor and source our products (among them ) Japan ,it depends how much you believe that but otherwise you should look for a Japanese website selling old stock.
I was going to say try direct from Japan but it seems several Japanese audio chip manufacturers were recently burnt down .
This website is saying they sell---and quote --- " the JRC5534DD parts manufactured by JRC are available at"------
JRC5534DD JRC Integrated Circuits (ICs) - Jotrin Electronics
The company say -yes we are Chinese but a distributor and source our products (among them ) Japan ,it depends how much you believe that but otherwise you should look for a Japanese website selling old stock.
If you can, put 5532 in the circuit, I think 34 is the1 channel version.
32 should be easier to source.
Or AD797 for low noise...
32 should be easier to source.
Or AD797 for low noise...
I have a lifetime supply of the NJM5534M, this is the DMP package on a very big reel. I’m not sure if it’s the ‘D’ grade, I have to check.
You will need a DIP adapter. The JRC DMP package is slightly wider than the more common 3.9mm narrow SOIC package so some of the SOIC-8 to DIP-8 adapters might not work if the SMD pads for the toe is not long enough.
PM me if you need more details.
I just checked, it’s not the ‘D’ grade.
You will need a DIP adapter. The JRC DMP package is slightly wider than the more common 3.9mm narrow SOIC package so some of the SOIC-8 to DIP-8 adapters might not work if the SMD pads for the toe is not long enough.
PM me if you need more details.
I just checked, it’s not the ‘D’ grade.
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No, not pin compatible, 5534A is not unity-gain stable as it lacks internal compensation too - so not necessarily circuit compatible either.
The AD797 is very noisy if you're in a high impedance circuit, since it only has low voltage noise, not low current noise. Best used for source impedances of a 100 ohms or thereabouts such as MC phono amp or dynamic mic amp.
At >2k souce impedances the 5534A will outperform an AD797 (in noise and price).
Why is that? The Philips/Signetics NE5534s were always highly regarded for their superb sound.
I am in a search for the same JRC5534DD too. The ones on ebay from China can't be fake, ore not? This where cheap op amp when still made.
I need about 10 pieces.
Mike, do you have found a good source?
I need about 10 pieces.
Mike, do you have found a good source?
Profusion PLC are listing just quantity 8 x NJM5534D DIP 8 op amps in stock, but plenty of the surface mount version.
Inexpensive - and genuine.
Profusion Ltd - Audio Semiconductors
Inexpensive - and genuine.
Profusion Ltd - Audio Semiconductors
TL072, OPA2134, AD797, and others may be available, you can build from new.
Ebay is not reliable.
Ebay is not reliable.
Assuming your rails aren't over 36V, why not use OPA1641 on an SMD adapter? 1kHz noise performance will be slightly worse with low impedance feedback networks (4nV vs 5nV) but practically all other parameters will be improved.
The “D” suffix are exactly the same die as the none-“D”. The “D” are cherry-picked from the same NJM5534 wafer and has guaranteed noise performance.
IC testing adds to the cost of the product. A none-“D” grade in some cases can qualify as a “D” grade if only it was screened. Think of how 1%, 5% and 10% film capacitors are graded. Capacitor testing is far simpler than ICs but the general grading idea is the same.
A similar situation exists on MPU and MCU speed grading.
It IS true that the cherry-picked versions of the 5534 are quieter. But it is practically only a difference of about 1 db, and this would not be noticeable/audible in a line-level circuit; just barely audible for a phono, tape head or microphone circuit.
This would be much later (~20yr.). Someone here might remember who selected the Raytheon parts for noise and made up a part number of their own as an audio op-amp.
Analog Systems. It was the MA-332. I built a number of mic pre's with them back in the day and still have a few laying around. They were also widely used in test equipment. They were selected for more than just noise, though.
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