5532 replacement and improved!!

[StephenGiles]

The NJM 2114 has better slew rate, wider bandwidth and lower offset voltage - there you go, see here:
http://www.profusionplc.com/news/press/latenewsfm.htm
Stephen

 

[Kev]

I'm confused
:?

I think that link you have posted may regularly change
currently it displays a Tripath TK2019 Amplifier chipset

STEREO 20W (4Ω) CLASS-T? DIGITAL AUDIO AMPLIFIER
DRIVER USING DIGITAL POWER PROCESSING (DPP?)
TECHNOLOGY
http://www.profusionplc.com/static/images/data%20sheets/tk2019.pdf

cool but it is a two chip solution and not a 5534 replacement

Class T amplifiers !
I can't keep up with all this stuff

 

[Rossi]

Here's the correct link:
http://www.profusionplc.com/cgi-bin/gex/pcatdtl?ipartno=NJM2114D

The NJM2114 has been around for a while. I have been interested too, since I spotted it in the profusion catalogue. So far I haven't heard any real world experiences, though.

Another cool thing about the 2114 is that it is also available in a single line package, so you could use it to replace other single line opamps often found in chinese budget audio equipment such as M@ackie or B*ringer.

 

[clintrubber]

Interesting, the pdf-datasheet itself suggest to replace the described type with a 5532 :wink:
The first time I see such honesty.

The desclibing page says it as intended though, evelything sorved :thumb:

 

[peranders]

[quote author="StephenGiles"]The NJM 2114 has better slew rate, wider bandwidth and lower offset voltage - there you go, see here:
....[/quote]
... so? I think you have more options than NJM2114 if you want a good dual opamp but maybe it's hard to find in the similar price range.

 

[Mendelt]

And now to the stuupid questions....

On the site they claim "Compared to the NJM5532, it has superior slew rate, bandwidth and offset voltage. Its low noise and distortion make it suitable for high fidelity and audio equipment. "

What's the difference between the NE5532 and the NJM5532?

 

[clintrubber]

Manufacturer

 

[Rossi]

What's particulary interesting regarding the NJM2114 is that it is not just another high performance opamp but specifically designed as a supercharged 5532. It has the same operating parameters such as +/- 22V rails but improved audio performance. Plus it is cheap and available in various packages. I just wish we had someone who has real world experiences with it.

 

[clintrubber]

Hmm, pdf-datasheet, bottom of page 2. Haven't seen such a resistor-requirement for the 5532. I see no value BTW.

Anybody an idea how recent this '2114 is ?

Regards,

Peter

 

[Rossi]

The same resitor recommendation is in the NJM5532 datasheet, last page. They give a value there: 1 K. My guess is that they put in that recommendation so they can say "see, we told ya" just in case anything happens.

There's no date on the datasheet. The oldest newsgroup post I could find relating to the NJM2114 is from 1992.

 

[clintrubber]

Thanks for the info. Hmm, I see, so it's no just arrived thing - I had no idea.
That 'legal'-resistor, ah. Can't recall to have seen it in 'NE-' datasheets as well but who knows it'd be required there as well to be safe on all accounts. Doesn't feel to good though to have a low noise opamp and then spoiling certain applications a bit by having to add a 1k series-resistor for safety.

regards,

Peter

 

[bcarso]

"What's the difference between the NE5532 and the NJM5532?"

"Manufacturer"

This manufacturer (JRC) gets mixed reviews. I used to think they were very good although their sales presence and customer relations in the US were ludicrously poor for a while. Maybe it has improved now, but it used to be sort of the prototypically insular Japanese company. I remember a particularly funny meeting when the purchasing agent asked a visitor about quality. "Quarity GOOD!!!" The gentleman couldn't understand why we needed to see data to support that assertion.

They do have some funny datasheets: look at the one for the 4580, which I believe says it is "no noise". IIRC it also recommends its use in tone controls, where the usual fairly high Z of the potentiometers would make things distinctly noisy due to the relatively high input bias currents.

A fellow consultant used a different criterion: he would open the hood on consumer equipment and see what S*ny and P*nasonic et al. were using. Based on that he decided JRC had to be o.k. as they were all over the place.

I've had no bad luck with them so far, although an incoming engineering veep said that at his previous company (L*btech) they had had no end of difficulties.

 

[featherpillow]

I just don't understand you guys sometimes...is it nostalgia? Is that why you like the 5532 so much?

I'm not dogging it, and I hope I'm not offending anyone, I just don't get it...

 

[gyraf]

It's just that it does it's job very well indeed... if used right..

 

[mattmoogus]

[quote author="StephenGiles"]The NJM 2114 has better slew rate, wider bandwidth and lower offset voltage - there you go, see here:
http://www.profusionplc.com/news/press/latenewsfm.htm
Stephen[/quote]

But does it sound better?


M

 

[Svart]

I am sorry to say that I have *tried* to use many NJM/NJR parts and have run into many issues especially with their switch PSU JUNK. I've been repairing small CCD camera modules that had NJM/NJR parts. 9 out of 10 modules that don't work can be traced directly to at least 1 to 3 NJR parts being burned, shorted or generally grenaded for no apparent reason. I've been playing with their version of the 5532 and so far testing confirms that it is of considerably poorer performance than the signetics 5532..

I say use with caution and test completely before commiting.. :thumb:

 

[bcarso]

Followup as I recalled some morre experiences: I used their TL431 shunt regulators and found them to be very accurate in voltage, but noisier than others. I used R*hm BA4560's and measured voltage noise, and midband found it to be about 8nV/root Hz. The JRC datasheet for the NJM4560 was about twice as much, but I don't believe I ever measured them.

 

[peranders]

[quote author="featherpillow"]I just don't understand you guys sometimes...is it nostalgia? Is that why you like the 5532 so much?

I'm not dogging it, and I hope I'm not offending anyone, I just don't get it...[/quote]
I think you don't can find any opamp with better price/performance ratio but I must admit that I'll get much more excited with other opamps like OPA627 and AD8610/20. In my SMD gainclone I have used an AD8620 in the DC servo which is probably the best DC servo in the world(?).
Picture here and here

 

[Rossi]

I remember a post from a guy who rechipped old consoles and had ordered 5532s in large quantities from various manufacturers. He reported that the NJM ones hadthe fewest dead on arrivals by far.

Too bad distribution of NJM parts in small quantities is pretty bad. I'd like to test before ordering 100+ parts. What's tempting about the NJM2114 is that it is almost the same price as the 5532. But better specs don't mean much if there's no (subjective) improvement in sound.

 

[featherpillow]

I think you don't can find any opamp with better price/performance ratio but I must admit that I'll get much more excited with other opamps like OPA627 and AD8610/20. In my SMD gainclone I have used an AD8620 in the DC servo which is probably the best DC servo in the world(?).

Now that's what I'm talking about!

I haven't used the 8620 yet, although I just got done building a simple front end gain stage for a Marshall JCM900 that uses the AD8066. I bypassed that crap-tacular proprietary solid state input stage that makes the amp sound like it's under a stack of pillows.

But I do see the point about the 5532.