TY - GEN
T1 - CMOS oversampling ΔΣ magnetic to digital converters
AU - Ho, L. A.
AU - Chen, S. L.
AU - Kuo, C. H.
AU - Liu, S. I.
PY - 2001
Y1 - 2001
N2 - In this paper, a CMOS oversampling delta sigma (ΔΣ) magnetic to digital converter (MDC) is proposed. In the MDC, the magnetic operational amplifier (MOP) combines with the switched capacitor (SC) ΔΣ modulator, and converts the external magnetic field into digital form. Simulation and measurement results indicate that the average digital output versus the applied magnetic field is quite linear. The prototype circuit was fabricated in a 0.5um CMOS DPDM process. The circuit operates at a 5V supply voltage and the sampling rate of 2.5MHz. The maximum signal range of the converter is at least ±100mT and the resolution can reach as small as 1mT. The gain error within ±100mT is less than 3%. The conversion gain is 1.327mv/mT and the power consumption is 49.3mW.
AB - In this paper, a CMOS oversampling delta sigma (ΔΣ) magnetic to digital converter (MDC) is proposed. In the MDC, the magnetic operational amplifier (MOP) combines with the switched capacitor (SC) ΔΣ modulator, and converts the external magnetic field into digital form. Simulation and measurement results indicate that the average digital output versus the applied magnetic field is quite linear. The prototype circuit was fabricated in a 0.5um CMOS DPDM process. The circuit operates at a 5V supply voltage and the sampling rate of 2.5MHz. The maximum signal range of the converter is at least ±100mT and the resolution can reach as small as 1mT. The gain error within ±100mT is less than 3%. The conversion gain is 1.327mv/mT and the power consumption is 49.3mW.
UR - https://www.scopus.com/pages/publications/0035024683
UR - https://www.scopus.com/pages/publications/0035024683#tab=citedBy
U2 - 10.1109/ISCAS.2001.921874
DO - 10.1109/ISCAS.2001.921874
M3 - Conference contribution
AN - SCOPUS:0035024683
SN - 0780366859
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
SP - 388
EP - 391
BT - ISCAS 2001 - 2001 IEEE International Symposium on Circuits and Systems, Conference Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2001 IEEE International Symposium on Circuits and Systems, ISCAS 2001
Y2 - 6 May 2001 through 9 May 2001
ER -