A low-power sensor interface circuit for remotely powered implants

This paper proposes an interface circuit for wirelessly powered implants for mice temperature monitoring. The circuit contains the read-out circuit and a data converter. By using a novel approach to cancel the non-linear effects of thermistor sensors, the circuit achieves 27dB higher SFDR. The syste...

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Bibliographic Details
Published inProceedings of the 2013 9th Conference on Ph.D. Research in Microelectronics and Electronics (PRIME) pp. 321 - 324
Main Authors Xiao Liu, Dehollain, Catherine
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2013
Subjects
Capacitors
Clocks
Monitoring
Power demand
Temperature measurement
Temperature sensors
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Summary:This paper proposes an interface circuit for wirelessly powered implants for mice temperature monitoring. The circuit contains the read-out circuit and a data converter. By using a novel approach to cancel the non-linear effects of thermistor sensors, the circuit achieves 27dB higher SFDR. The system is designed in UMC CMOS 0.18μm technology, which has 200KHz sampling rate, 8-bit resolution, and total power-consumption of 29μW. The successive approximation analog-to-digital convertor (SAR ADC) is fabricated. The measurement result shows an Effective Number of Bits (ENOB) of 7.
ISBN:9781467345804
1467345806
DOI:10.1109/PRIME.2013.6603173