Print Email Facebook Twitter Capacitive Sensor Interface Using an Inverter-Based Period Modulator Title Capacitive Sensor Interface Using an Inverter-Based Period Modulator Author He, Y. Contributor Pertijs, M.A.P. (mentor) Faculty Electrical Engineering, Mathematics and Computer Science Department Micro-electronics and Computer Engineering Programme MicroElectronics Date 2014-10-29 Abstract This thesis discusses the basic principles, circuit implementation and measurements of an inverter-based capacitive-sensor interface based on period modulation. The interface employs an inverter-based OTA and comparator to increase the current efficiency. Moreover, it applies new circuit techniques to reduce the die size and to reduce noise. A prototype interface has been implemented in a 0.16 ?m CMOS process to prove these concepts. The measurement results show that it can achieve more than 10 bit resolution consuming 14 ?A from a 1 V supply. The die size and energy efficiency have improved by more than an order-of-magnitude compared to previous interfaces based on period modulation. Subject capacitive sensorperiod modulationenergy-efficiencylow-power To reference this document use: http://resolver.tudelft.nl/uuid:0780361f-6744-4836-9ad7-70a7df14307b Embargo date 2015-11-01 Part of collection Student theses Document type master thesis Rights (c) 2014 He, Y. Files PDF MSc_Thesis_Y.He_final.pdf 1.61 MB Close viewer /islandora/object/uuid:0780361f-6744-4836-9ad7-70a7df14307b/datastream/OBJ/view