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A fully-digital capacitive sensor readout circuit based on capacitance controlled oscillators is presented. A two-step quantization scheme using SAR for coarse conversion and ΔΣ for fine conversion is introduced to extend the sensor input range while preserving the sensing accuracy. Systematic error analysis and optimization for the finite switch on-resistance and buffer input dependent delay are...
The embedded fully self-biased switched-capacitor (FSBSC) with single-inductor high voltage bipolar-output (SIHBO) converter is proposed to achieve the energy and area-efficient driving scheme for the paper-like cholesteric liquid crystal display (Ch-LCD), which becomes the next generation of electronic readers in the consumer markets. As the compact power management module, SIHBO converter can provide...
The Avalanche Photodiodes (APDs) are widely used in a variety of optical application requiring high sensitivity, such as long-distance optical communication and optical distance measurement, because the APDs can detect the low level light. APDs accompanied with the Transimpedance Amplifier (TIA) are utilized on the receiver side in the communication system. The trend of integrating the active optical...
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