At 09:02 AM 11/20/2007, you wrote:
Hello All,
I am having trouble tracking down a MC1495 or SG1495 or 1826-0437.
Its a 'wideband linear 4-quadrant multiplier' used in the AM and
Amplitude levelling in a 3325A.
Does anyone sell this chip anymore?
It has been obsolete for some time.
Although I have never tried this trick in a 3325A, I have used the
Analog Devices AD633 (readily available from DigiKey and others) in
other applications where I originally used the MC1495. It might be
worth some investigation.
I don't think I have the schematics of the 3325A, but if you can post
or email me the appropriate section I can try to sketch something out for you.
John Day
Toronto
Is there a functional / electrical equivalent?
Best regards,
Mark.
PS I have 3x A3 boards, all with the same problem!
Symptom is A-Cal fail, All 3 self test fail.
The voltages around this IC are all wrong.
mcs
