基于非延时积分器Delta-Sigma调制的电容传感器探测电路OA北大核心CSCDCSTPCD
A Delta-Sigma Modulator with Non-Delay Integrator for Capacitance Detection
研究一种基于非延时积分器Delta-Sigma调制的差分电容探测接口电路,该电路的Delta-Sigma调制使用非延时积分器将采样与积分同时进行,减小普通Delta-Sigma调制型电容探测电路中积分保持阶段的电荷泄露效应,仿真结果表明该结构可明显提高探测较小电容的信噪比,增加了调制器可探测电容的动态范围.
This paper introduces a Delta-Sigma modulator with non-delay integrator for capacitance detection, which reduces the leak charge by integrating and sampling simultaneously instead of taking them separately in most occasions. This structure can greatly improve the performance of Delta-Sigma modulator u-sing in small capacitance detection. The end of this paper shows the simulation results of a 2nd order modulation which achieve a great increase ability in det…查看全部>>
严博;曾韡;高峰
复旦大学国家微分析中心,上海,200433复旦大学国家微分析中心,上海,200433复旦大学国家微分析中心,上海,200433
信息技术与安全科学
传感器接口电路电容探测Delta-Sigma调制积分器积分漏电流
transducer interface circuitcapacitance detectionDelta-Sigma modulationintegratorleak current
《传感技术学报》 2009 (11)
1581-1585,5
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