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Hall-effect sensor/ASIC integration shrinks current transducers (Part 1 of 2)

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batero
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re: Hall-effect sensor/ASIC integration shrinks current transducers (Part 1 of 2)
batero   2/22/2008 7:51:53 AM
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Allegro Microsystems has been offering Hall-Effect current sensors for years. They are precise (I used them in several designs), have good linearity, are not expensive and the current actually goes thru the IC.. What happens to LEM's chips when they are not perfectly aligned to the measured current track? Assembly machines not always align the components perfectly when the assembly is in process. Might wonder what the current path resistance might be for Allegro's chip? Around 130 micro-OHM, and they provide 2100Vrms or 3000Vrms isolation... No, I'm not in any way endorsed by Allegro. I just used them with great results, they offered these ICs for many years (I've seen them for the first time around 4 or 5 years ago), and they never received their deserved attention from the media.

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