Products > Test Equipment
Hioki DT4282 handheld multimeter, High resolution tear down images
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tsman:

--- Quote from: Synthtech on May 04, 2018, 09:26:07 pm ---Hioki make their own custom multimeter IC which they claim is the reason for the high speed of their meters. Can you see which IC in there has “Hioki” stamped on it? Hard to tell from the pictures.

--- End quote ---
I couldn't find any in the photos. The big chip is a Renesas uC UPD78F1518A with an Analog Devices ADC nearby. The rest of the board is just a huge pile of opamps and analog switches/muxes. They're doing everything themselves and not using one of the all-in-one multimeter chips.
coromonadalix:
@ fungus   could they be some precision capacitors
TiN:
They are film SMT capacitors.
BravoV:
Wonder why still use color bands these days ? As printing label at SMD component is norm.  :-//
Fungus:

--- Quote from: Synthtech on May 04, 2018, 09:26:07 pm ---Hioki make their own custom multimeter IC which they claim is the reason for the high speed of their meters. Can you see which IC in there has “Hioki” stamped on it? Hard to tell from the pictures.

--- End quote ---

Looks to me like they "make" it from TTL components.  :popcorn:

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