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Products => Test Equipment => Topic started by: sorenkir on August 16, 2015, 02:46:11 pm

Title: Help to identify 10V reference chip in AOIP MN5121 DMM (1983 vintage)
Post by: sorenkir on August 16, 2015, 02:46:11 pm

Hi,
I could not find any data about the MP5532, 10V reference of this DMM, see attached picture.
According to the schematic, pinout is :
2 - +15V power supply
4 - GND
5 - TRIM
6 - +10V output

Thanks,
Michel.

Title: Re: Help to identify 10V reference chip in AOIP MN5121 DMM (1983 vintage)
Post by: papou_79 on August 16, 2015, 03:54:25 pm

Hi sorenkir,

Manufacturer of MP5532 was ( in 1983) MICRO POWER SYSTEMS INC.
You can find the schematic of AOIP MN5121 to this URL:
http://www.radiomuseum.org/r/aoip_multipreci_mn_5121.html (http://www.radiomuseum.org/r/aoip_multipreci_mn_5121.html)
Regards.
papou_79

Title: Re: Help to identify 10V reference chip in AOIP MN5121 DMM (1983 vintage)
Post by: sorenkir on August 19, 2015, 09:52:15 am

Merci papou_79 !
Never heard of this chip maker before. Seems to have disappeared.
Did not find any info or datasheet about MP5532   :(
Michel.