[sdiy] IC Prototyping was: SSM2040

[ASSI]

On Samstag 03 November 2007, Dave Manley wrote:
> Looking at voltage ratings, CEM parts are typically +/-15V,

If you look closely at the datasheets, you'll find that the -15V are 
dropped to -6.5V via an internal Zener diode.

> while the 700 Series is limited to 20V, so I doubt there is a direct
> connection.

There is a direct line of ancestry from the Interdesign arrays that Doug 
Curtis designed his first chips on and the 700 series, though I doubt 
they are identical (the breakdown voltages assumed in the CEM 
datasheets and the ones listed for the 700 series don't match well).  
OnChip is even listed as a (design) partner company at the Zetex site 
for the 700 series.

> Still, if someone wants to decap some dead parts and 
> publish photos that would be cool.  I'm a little surprised no one has
> done that before. There must be piles of dead CEM parts laying
> around.

Where?  I'm mighty glad all my CEM chips are working...


Achim.
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