Magnetic-field-to-digital converter using PWM and TDC techniques

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Title:	Magnetic-field-to-digital converter using PWM and TDC techniques
Authors:	郭建宏;Kuo, Chien-hung;Chen, Shr-lung;Liu, Shen-iuan
Contributors:	淡江大學電機工程學系
Date:	2006-07
Issue Date:	2010-03-26 20:59:17 (UTC+8)
Publisher:	Stevenage:Institution of Engineering and Technology (IET)
Abstract:	A high resolution magnetic-ﬁeld-to-digital converter (MDC) is presented. It is composed of a magnetic-ﬁeld-to-pulse width converter (MPC), a cyclic pulse-shrinking time-to-digital converter (TDC) and a polarity detector. This prototype circuit has been fabricated in a 0.5μm CMOS DPDM process. With a clock rate of 16.6 kHz, the power consumption is 42.5 mW under 5 V supply voltage. The equivalent resolution less than 16μT can be achieved within the range of 710 mT. After off-line calibration, the remaining offset is 0.017 mT and its gain error is smaller than 0.4%.
Relation:	IEE Proceedings-Circuits, Devices and Systems 153(3), pp.247-252
DOI:	10.1049/ip-cds:20045168 10.1049/ip-cds:20045168
Appears in Collections:	[Graduate Institute & Department of Electrical Engineering] Journal Article

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