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CMOS Microsystem for AC Current Measurement with Galvanic Isolation
- Source :
- IEEE Sensors Journal, IEEE Sensors Journal, 2003
- Publication Year :
- 2003
- Publisher :
- HAL CCSD, 2003.
-
Abstract
- In this paper, we present an integrated ac current sensor based on sensitivity-optimized horizontal Hall effect devices and a differential readout chain. This microsystem has been designed for 5-A rms nominal ac current measurement with 5-kV galvanic isolation and 0.5% accuracy after calibration from 250 mA to 5 A, over 1.5-kHz bandwidth, which allows up to 30th (25th) harmonic detection in 50-Hz (60-Hz) applications. This qualifies the current sensor microsystem for class 1 products according to international norms for energy meters (IEC44-1 and IEC1036). From the sensing element throughout 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.
- Subjects :
- Engineering
business.industry
Bandwidth (signal processing)
Electrical engineering
Electromagnetic compatibility
[SPI.TRON] Engineering Sciences [physics]/Electronics
law.invention
[SPI.TRON]Engineering Sciences [physics]/Electronics
CMOS
law
Microsystem
Electronic engineering
Current sensor
Electrical and Electronic Engineering
business
Alternating current
Instrumentation
Galvanic isolation
Signal conditioning
Subjects
Details
- Language :
- English
- ISSN :
- 1530437X
- Database :
- OpenAIRE
- Journal :
- IEEE Sensors Journal, IEEE Sensors Journal, 2003
- Accession number :
- edsair.doi.dedup.....9831bd0a1ff437350ec97393f23e833d