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Title: CMOS Magnetic Field to Frequency Converter
Authors: 國立臺灣師範大學電機工程學系
Shr-Lung Chen
Chien-Hung Kuo
Shen-Iuan Liu
Issue Date: 1-Apr-2003
Publisher: Institute of Electrical and Electronics Engineers�(IEEE)
Abstract: In this paper, a CMOS magnetic field to frequency converter with high resolution is presented. It is composed of two voltage-controlled ring oscillators whose output frequency differences linearly vary with the magnetic field perpendicular to the chip surface. The prototype circuit has been fabricated in a 0.5- m CMOS process and operated at a 5-V supply voltage. The measured sensitivity is 24 kHz/mT and the power consumption is 5.1 mW. The small equivalent resolution of at least 20 T can be achieved. The frequency offset is 42 kHz when no magnetic field applied. Its nonlinearity within 120 mT is smaller than 0.56%.
ISSN: 1530-437X
Other Identifiers: ntnulib_tp_E0610_01_007
Appears in Collections:教師著作

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