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A 7-bit 26MS/s SAR (successive approximation register) ADC is presented in this paper for the application of ZigBee receiver. Compared to the conventional method, the set-and-down method reduces the average switching energy by around 80%. Dynamic comparator is chosen to diminish the signal-dependent offset caused by the non-fixed input common-mode voltage. A prototype ADC was implemented in a CMOS...
A novel thermal-bubble-based micromachined accelerometer with advantages of low solid thermal conductance and high sensitivity is presented in this paper. With our proposed micro-link structure, a new accelerometer was built with a micro heater, two pairs of thermopiles which were floating over an etched cavity. The micro-heater is centered on the membrane and two pairs of thermopiles besides are...
In this paper, we design and fabrication a novel thermal-bubble-based micromachined accelerometer with advantages of minimum solid thermal conductance and high sensitivity successfully. It can detect two-dimension acceleration changed and apply to technology of inclinometers, anemometers and flow meters. A new accelerometer consists of a micro heater and two pairs of thermopiles floating over an etched...
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