OPA2132P vs OPA2132PA WHAT'S THE DIFFERENCE? - Page 2 - diyAudio
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Old 7th June 2012, 07:26 AM   #11
teleman is offline teleman  Norway
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Yes,yes... I do see now a few different parameters between these two, sorry! I did observe one thing though...the markings on the devices. I noticed that the BB logo is printed smack in the middle on top section of the device on some as is in the original BB, but more to the left or right on others! I'm not sure how significant or helpful this is in identifying the various manufacturers? There are also other give away tell tale signs like production date/batch no/origin etc. Perhaps someone would care to give us a photo of the original?

I've also encountered similar problems with NE5532 chips!

I'm not sure if BB moved their production to any far eastern countries or not. So,we amay be well at looking at numerous variables I think!

Btw,OPA2132x is BFET & 2134x is JFET I believe.


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File Type: jpg OPA 2132-3.jpg (15.1 KB, 152 views)
File Type: jpg OPA2132-5.jpg (18.0 KB, 151 views)
File Type: jpg OPA2132 PA-7.jpg (18.3 KB, 150 views)
File Type: jpg OPA 2132-2.jpg (47.9 KB, 150 views)

Last edited by teleman; 7th June 2012 at 07:39 AM.
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Old 7th June 2012, 12:56 PM   #12
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The parts I have look similar to the first photo....
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Old 7th June 2012, 02:13 PM   #13
teleman is offline teleman  Norway
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So, is this the original BB chip then? Looks exactly the same as my 1st picture. I think it would be safer to buy. The TI 2132 will be the closest one would ever come to the the original, since BB is still manufacuring these under TI logo at present.
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Old 7th June 2012, 03:53 PM   #14
jitter is offline jitter  Netherlands
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It would be the other way around. TI owns BB since 2000 but many products designed by BB are still manufactured under the BB logo.

The problem with relying on the position of printing is that even on genuine products it can be all over the place. For a few pics of several different OPA627s (because of the high price very counterfeit-prone) through the years, please take a look at this thread: genuine OPA627 info. Some might look very similar to some of the OPA2132s in this thread.

In it you'll also find a test setup for measuring quiescent current and a test I did on some different opamps with a diy ~100 kHz square wave generator using an LM393 and a couple of components.

With some alterations, both should be suitable to check out OPA2132/2134s too.

The best chance of getting genuine items is through authorized resellers. Reputable resellers are the next best bet. Chances of getting counterfeits are huge on eBay and from brokers.

Last edited by jitter; 7th June 2012 at 04:17 PM.
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Old 7th June 2012, 04:40 PM   #15
teleman is offline teleman  Norway
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I agree with you-Jitter-entirely on the points you have raised in your last post. Seems like nothing is static or certain these days! Different locations, factories,regions, production deviations & so on do culminate in products looking progressively different from the original.On the other hand, counterfeiting has been, still is & will be a perennial problem. "If you can't make it fake it" must be their motto of many of these cowboys.

I did read through your other thread on OPA627's & found it very interesting & alarming to say the least. I think the customer will be well served buying only from authorized sellers. However,the biggest hinderance to many elec. enthusiasts, both individuals & small companies IMHO is the near prohibitive high postage charges levied by these big distributors & sellers on small quantities.,thus forcing many customers to source from dubious vendors!

'nough said!
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Old 7th June 2012, 06:47 PM   #16
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Quote:
Originally Posted by teleman View Post
....I think the customer will be well served buying only from authorized sellers. However,the biggest hinderance to many elec. enthusiasts, both individuals & small companies IMHO is the near prohibitive high postage charges levied by these big distributors & sellers on small quantities.,thus forcing many customers to source from dubious vendors!
Teleman, if you ever need more genuine 2132pa just send me a PM. I have over 20pcs sitting here for the last few years that came from Digikey, so guaranteed they are genuine. My shipping charge is 3USD.
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Old 7th June 2012, 07:38 PM   #17
teleman is offline teleman  Norway
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Thank you the Anonymous1 for the kind offer. I've made a note of it. It's just I have a few fake?/generic/counterfeit devices ,which I need to use up or sell first. Any takers?
These don't sound bad at all..actually a little better than OPA2134 in this particular application (acoustic guitar blender preamp) it's just I want to hear how the real stuff sounds! Perhaps I should go in to baking "Fake bread" to sell on the Bay & be content for the rest of my life! Lol!

Thanks.

Last edited by teleman; 7th June 2012 at 08:01 PM.
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