Look at the underpants of our chips

[olaf]

Perhaps you like to have a look inside:

https://www.richis-lab.de/index.htm

It is interesting that there are so many different designs for the
same chip.

Olaf

 

[Winfield Hill]

olaf wrote...

Perhaps you like to have a look inside:
https://www.richis-lab.de/index.htm

Very nice indeed, by Richard Kaußle.


--
Thanks,
- Win

 

[Tim Williams]

All super old ones though... like, just how many die pics of LM339 do you
need to see before you realize you're never going to design one in again?..

Zeptobars has done quite a lot:
https://zeptobars.com/en/
you can even send them chips to decap and they'll photograph them.

Tim

--
Seven Transistor Labs, LLC
Electrical Engineering Consultation and Design
Website: https://www.seventransistorlabs.com/

"olaf" <olaf@criseis.ruhr.de> wrote in message
news:eu5ahg-hne.ln1@criseis.ruhr.de...

Perhaps you like to have a look inside:

https://www.richis-lab.de/index.htm

It is interesting that there are so many different designs for the
same chip.

Olaf

 

[Phil Hobbs]

On 2020-02-11 09:21, Tim Williams wrote:

All super old ones though... like, just how many die pics of LM339 do
you need to see before you realize you're never going to design one in
again?..

Zeptobars has done quite a lot:
https://zeptobars.com/en/
you can even send them chips to decap and they'll photograph them.

Tim

Nah, I use LM393s all the time, for things like overtemperature
lockouts. Wire-OR saves parts. Of course there are software limits as
well, but having a backup in analogue is very comforting.

You can also overvolt their inputs up to about +40V regardless of the
supplies, and that's not a capability that grows on trees with newer
chips, especially at nine cents for a dual in TSSOP.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

 

[George Herold]

On Tuesday, February 11, 2020 at 9:21:58 AM UTC-5, Tim Williams wrote:

All super old ones though... like, just how many die pics of LM339 do you
need to see before you realize you're never going to design one in again?..

Did you mean the LM399? I saw no pics of the lm339 on the above link.
(Besides the price, lm399 seems ok to me.)

George H.

Zeptobars has done quite a lot:
https://zeptobars.com/en/
you can even send them chips to decap and they'll photograph them.

Tim

--
Seven Transistor Labs, LLC
Electrical Engineering Consultation and Design
Website: https://www.seventransistorlabs.com/

"olaf" <olaf@criseis.ruhr.de> wrote in message
news:eu5ahg-hne.ln1@criseis.ruhr.de...
Perhaps you like to have a look inside:

https://www.richis-lab.de/index.htm

It is interesting that there are so many different designs for the
same chip.

Olaf

 

On Tue, 11 Feb 2020 09:57:26 -0500, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

On 2020-02-11 09:21, Tim Williams wrote:
All super old ones though... like, just how many die pics of LM339 do
you need to see before you realize you're never going to design one in
again?..

Zeptobars has done quite a lot:
https://zeptobars.com/en/
you can even send them chips to decap and they'll photograph them.

Tim


Nah, I use LM393s all the time, for things like overtemperature
lockouts. Wire-OR saves parts. Of course there are software limits as
well, but having a backup in analogue is very comforting.

You can also overvolt their inputs up to about +40V regardless of the
supplies, and that's not a capability that grows on trees with newer
chips, especially at nine cents for a dual in TSSOP.

Cheers

Phil Hobbs

Yeah, 339s and 393s are still useful.

I like to use a MAX809 as a powerup reset chip, but pull down its
input with multiple open collectors to check multiple supplies,
thermistors, whatever.

(The TI version of course. Never Buy Maxim!)




--

John Larkin Highland Technology, Inc

The cork popped merrily, and Lord Peter rose to his feet.
"Bunter", he said, "I give you a toast. The triumph of Instinct over Reason"