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

C. H. Kuo*, S. L. Chen, S. I. Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


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 16.6kHz, the power consumption is 42.5mW under 5V supply voltage. The equivalent resolution less than 16μT can be achieved within the range of ±10mT. After off-line calibration, the remaining offset is 0.017mT and its gain error is smaller than 0.4.

Original languageEnglish
Pages (from-to)247-252
Number of pages6
JournalIEE Proceedings: Circuits, Devices and Systems
Issue number3
Publication statusPublished - 2006 Jun
Externally publishedYes

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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