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Title: Magnetic-to-Digital Converters Using Single-Amplifier-Based Second-Order Delta-Sigma Modulators
Authors: 國立臺灣師範大學電機工程學系
Chien-Hung Kuo
Shr-Lung Chen
Shen-Iuan Liu
Issue Date: 1-Apr-2004
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Abstract: In this paper, two magnetic-to-digital converters (MDCs) using single-amplifier-based second-order delta–sigma modulators (DSMs) are presented to detect the dc magnetic field. The proposed second-order DSM required only a single-operational amplifier to achieve the second-order noise shaping. Both the proposed circuits have been fabricated in a 0.5- m CMOS DPDM process, and the resolution of 11 bits can be achieved. The measured sensitivities are 1.486 and 0.459 mV/mT, and the minimum detectable magnetic fields are 0.6 mT and 0.4 mT for the MDC with and without the pre-amplifier, respectively. Both the measured nonlinearities are smaller than 1.3% within the range of 100 mT.
ISSN: 1530-437X
Other Identifiers: ntnulib_tp_E0610_01_005
Appears in Collections:教師著作

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