Differential pH-sensitive sensor with DC electrode-offset compensation
Electronics Letters(2017)
摘要
A pH-sensitive sensor with a differential mode was developed to detect surface charges accumulated on the ion-sensitive layer. The device accurately monitors the relative pH value using the modified instrumentation amplifier with the DC electrode-offset compensation. The readout voltage is digitalised with the current-starved ring oscillator. The sensor achieves the DC offset compensation of 22.5 ...
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关键词
charge measurement,compensation,electrochemical electrodes,electrochemical sensors,instrumentation amplifiers,oscillators,pH measurement,readout electronics
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