From reading both datasheets, the specs are so close, if not identical,
they are the same part. Even the pinout is the same ! So use the LM4871.
Cutting the top off of one, and looking at the guts, may not reveal
anything. Chip makers periodically change the mask set of all ICs, to keep
up
Pulled the die from one of my ca 2001 LM9022s and it was indeed an LM4871
(Picture later). This makes me think that the LM9022 is a way to absorb
fallout from the LM4871 line, and if they don't have enough fallout they
could just use good LM4871s instead.
jt
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Images of LM9022 die...
http://ppl.ug/PCAptU3GN6g/
http://ppl.ug/5DTx4xMnVT4/
http://ppl.ug/dDfWdwPaa4I/
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That is most interesting! Thank you for taking the time and effort to show
us this!
/Martin
On Monday, 3 November 2014 18:19:07 UTC+1, taylorjpt wrote:
Pulled the die from one of my ca 2001 LM9022s and it was indeed an LM4871
(Picture later). This makes me think that the LM9022 is a way to
You get special points for that - very interesting!
Cheers
Nick
On Monday, 3 November 2014 19:31:04 UTC, taylorjpt wrote:
Images of LM9022 die...
http://ppl.ug/PCAptU3GN6g/
http://ppl.ug/5DTx4xMnVT4/
http://ppl.ug/dDfWdwPaa4I/
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Hi All,
I just got some B9012's from Walter. He says he has never even seen a socket
for these, so I tjink the odds of finding any are pretty low. :-(
So, over the years I have seen some discussions about various alternatives. I
tried to search through the archives but couldn't find anything
if you find anything relevant, let me know. Right now, I'm planning on
using just pins (maybe mounted on a board, maybe flying lead style, don't
know yet) so any improvement you find over that would be appreciated.
On Monday, November 3, 2014 8:30:35 PM UTC-6, Jonathan wrote:
Hi All,
I
What pins exactly are you using? I think that is what it is going to come to.
JOnathan
if you find anything relevant, let me know. Right now, I'm planning on using
just pins (maybe mounted on a board, maybe flying lead style, don't know yet)
so any improvement you find over that would be
I'll let you know when I know.
On Monday, November 3, 2014 8:55:50 PM UTC-6, Jonathan wrote:
What pins exactly are you using? I think that is what it is going to come
to.
JOnathan
if you find anything relevant, let me know. Right now, I'm planning on
using just pins (maybe
When I built my first nixie clock back in 1994, I had
no sockets and made my own. They are for NL-807 and NL-803 tubes.
They have 9 pins in a circle and three pins in the center.
Same pinout pattern as NL-840.
Here is what I did: Took one of the tubes and poked the pins through
a piece of white
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