Bob Pease on the New LM4562

[glennb]

Samples

This is what I got:We regret that we are unable to fulfill the sample request as follows:

The most likely scenario is that the NS warehouse which supplies requests to your part of the world is out of stock, due to high demand or unavailability. I've always been successful with ordering samples, but my LM4562 samples came out of their Singapore office.

 

[clem_o]

Seems right - wonder how they decide if they will charge for S/H or not...

Cheers!

 

[BrianDonegan]

Arrow finally started showing some inventory on these. National even added the Buy Now button to their page. Unfortunately, it was only 70 pieces and I bought all of them.

At least they are starting to hit the streets.

 

[Ryssen]

Does it come in one opamp/IC also?The LM4562.

 

[BrianDonegan]

Not yet.

 

[Colescuttle]

Audio cavemen group request.

Speaking on behalf of the handful of audio cavemen in the forum, if one were to implement the "Line Amp" design found on page 24 of the data sheet, using a +12, 0, -12 volt supply, could one expect to be able to drive a 92db-efficient full range horn to reasonable levels?

Valedictcaveman

 

[Russ White]

Re: Audio cavemen group request.

Speaking on behalf of the handful of audio cavemen in the forum, if one were to implement the "Line Amp" design found on page 24 of the data sheet, using a +12, 0, -12 volt supply, could one expect to be able to drive a 92db-efficient full range horn to reasonable levels?

Valedictcaveman

You would probably run out of current, but if you added something like a class A output stage good for 5W or so...

 

[Colescuttle]

Re: Audio cavemen group request.

Uggh! I should probably stick to the LM 3875. But thanks anyway, Russ.

Savesmuchtimeandfrustrationbyaskingfirstman

 

[jez]

There was some mention earlier in the thread about a Bob Pease web site and book.......any details would be welcome🙂

 

[BrianDonegan]

Bob Pease web site

http://www.elecdesign.com/Authors/AuthorID/904/904.html

 

[jez]

Ah yes THAT web site. I was curious as to the existance of a personal web site of his Oh well, thanks anyway🙂

 

[VT67]

For the first time in my life I applied for free samples. Today I received an email from NS which goes as follows:

"Dear Walter Geeraerts,

Thank you for the sample request from National Semiconductor.
We regret that we are unable to fulfill the sample request as follows:

Part Number : LM4562NA for 3 pieces.

Regards,

Regional Administrator"

Am I lucky or what

Regards

 

[Ryssen]

Same as me..

 

[BrianDonegan]

I get the impression they are having stocking issues. It seems no one in Europe can get samples. No suppliers have stock. The problems of being popular?

BTW, I saw Analod Devices has a new op-amp out with supposedly fantastic specs, but not even the datasheet is available yet: AD8599

More here and here.

 

[VT67]

Arrow finally started showing some inventory on these. National even added the Buy Now button to their page. Unfortunately, it was only 70 pieces and I bought all of them.

And you wonder why they are having stocking issues? 😀

Regards

 

[Russ White]

And you wonder why they are having stocking issues? 😀

Regards

They will go to good use

 

[BrianDonegan]

I hope they can produce them faster than *we* can use them. We don't sell that many kits... 😉

 

[classd4sure]

Got some of my samples (soic) in just this morning. DIP was approved a little later, probably be here tomorrow though.

I imagine they're overburdened with sample requests right now.

 

[TikiGod]

vs opa2604

Is this a good drop-in replacment for an opa2604?
TikiGod

 

[Spev]

yes, it walks the floor with the opa2604...

imo of course