Help find datasheet for M6306 multimeter ADC IC

[retiredcaps]

I have searched on/off over the past 2 years trying to find a datasheet for this 80 pin QFP multimeter IC.  It is used in Yokogawa multimeters or in HP rebranded Yokogawa meters.  It is 3200 count.

I can't find anything online, so I'm hoping someone has a printed copy or can tell me who makes it and if this is a clone of another popular IC?

Picture taken from modemhead's website.

http://mrmodemhead.com/blog/yokogawa-7534-03-multimeter/

[barijan]

I know it's an old thread, but here's some information that might be useful for the fellow forumers.
This M6306 chip is actually the discontinued OKI MSM6306 3 3/4 DMM IC, used on several Yokogawa digital multimeters such as Model 7534-03 and also on some units rebranded as HP (E2378A and E2377A) and Soar (3255).

Samsung released the KAD7001, a MSM6306 clone, supposed to be a direct replacement, but there are rumors that a few pins are numbered differently.
Other than that, all the rest still exactly the same and it's datasheet could be a very useful resource for repairing some of these nice multimeters.

Here's the Samsung KAD7001 datasheet for download:
https://cdn.datasheetspdf.com/pdf-down/K/A/D/KAD7001-Samsung.pdf

[retiredcaps]

Thanks, barijan. I appreciate the info and links in your post.

[DaveM]

Hi barijan:

Thanks for the information you shared. I found it as I was trying to find information to repair my HP E2373A multimeter. It was invaluable.

Much appreciated!