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Conventional capacitance-to-digital converters (CDC) widely used in IoTs particularly in portable applications tend to make use of complex analog-to-digital technologies. However this can be power hungry and take long conversion time. In addition, the analog parts are hard to implement in ASICs, especially under wide working conditions, such as energy harvesting scenarios. Recently digitalized CDCs...
Capacitance sensors are widely used for sensing physical parameters. Conventional capacitance to digital methods use complex analog ADC techniques which are power hungry. Recently a fully digital solution was proposed with improved power consumption. This paper describes a number of problems in that solution, analyzes these problems, and proposes a new design free of these problems. A voltage senor...
Oscillators are needed in many systems for time keeping purposes. They are often called timers. In low duty cycle systems, such as wireless sensors, such oscillators may incur a significant portion of system power consumption. Extensive research exists in making on-chip oscillators low power. However, the other part of the time keeping function, that of computing the number of oscillation cycles,...
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