CMOS microsystem for AC current measurement with galvanic isolation
SENSORS, 2002 IEEE - Tập 2 - Trang 1445-1450 vol.2
Tóm tắt
In this paper, we present an integrated AC current sensor based on sensitivity-optimised horizontal Hall effect devices (HHDs) and a differential readout chain. It has been designed for 5A nominal AC current measurement with 5 kV galvanic isolation and 0.5% accuracy over 1.5 kHz bandwidth, which allows up to 30/sup th/ (25 th) harmonic detection in 50 Hz (60 Hz) applications. From the sensing element to the instrumental chain's output the signal conditioning is exclusively performed by low-noise standard CMOS analog blocks. Moreover the whole microsystem features a mixed signal structure dedicated to auto-balancing.
Từ khóa
#Current measurement #Galvanizing #Magnetic field measurement #CMOS technology #Packaging #Hall effect #Instruments #Hall effect devices #Isolation technology #Electromagnetic compatibilityTài liệu tham khảo
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