"uuid","repository link","title","author","contributor","publication year","abstract","subject topic","language","publication type","publisher","isbn","issn","patent","patent status","bibliographic note","access restriction","embargo date","faculty","department","research group","programme","project","coordinates" "uuid:0780361f-6744-4836-9ad7-70a7df14307b","http://resolver.tudelft.nl/uuid:0780361f-6744-4836-9ad7-70a7df14307b","Capacitive Sensor Interface Using an Inverter-Based Period Modulator","He, Y.","Pertijs, M.A.P. (mentor)","2014","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.","capacitive sensor; period modulation; energy-efficiency; low-power","en","master thesis","","","","","","","","2015-11-01","Electrical Engineering, Mathematics and Computer Science","Micro-electronics and Computer Engineering","","MicroElectronics","",""