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Process Technology Advances

Small form factor sensors save PCB area and can save overall BOM costs over current transformer (CT) or resistor op-amp solutions (current sense amplifier, CSA). Depending on the application, Allegro current sensor IC packages can be as small as the 3 x 3 mm footprint of the QFN package shown here. Some packages can handle up to 400 A continuous current, thanks to a very unique custom and patented package (CA/CB). Many more surface mount packages are available for core-based, coreless, or internal conductor current sensing. They feature many different isolation levels, current ranges, programmable options, and temperature ranges.

PTM Published on: 2011-10-13
PTM Updated on: 2020-11-13