用于小信号电容传感的压控振荡器

2019 International Semiconductor Conference (CAS) Pub Date : 2019-10-01 DOI:10.1109/SMICND.2019.8923728

Andrei Enache, F. Draghici, G. Pristavu, G. Brezeanu

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引用次数: 2

摘要

从阿姆斯阿姆拓扑出发，设计了用于MOS电容传感器气体测量的压控振荡器(VCo)，并对样机进行了测试。VCO确保传感器上的小信号电平(< 100mV)，这是精确测量所必需的。提出了一种通过调节传感器偏置来保持振荡器频率恒定的方法。

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Voltage Controlled Oscillator for Small-Signal Capacitance Sensing

Voltage Controlled Oscillator (VCo) for gas measurement with a MOS capacitor sensor is designed starting from an Armstrong topology and a prototype is tested. The VCO ensures a small signal level across the sensor (< 100mV), necessary for precise measurement. A method in which the frequency of the oscillator is maintained constant by adjusting the sensor bias is proposed.

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2019 International Semiconductor Conference (CAS)

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