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Current-to-Voltage Converter Using Current-Mode Multiple Reset and its Application to Photometric Sensors
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  • Current-to-Voltage Converter Using Current-Mode Multiple Reset and its Application to Photometric Sensors
  • Current-to-Voltage Converter Using Current-Mode Multiple Reset and its Application to Photometric Sensors
저자명
Park. Jae-Hyoun,Yoon. Hyung-Do
간행물명
Journal of sensor science and technology
권/호정보
2012년|21권 1호|pp.1-6 (6 pages)
발행정보
한국센서학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

Using a current-mode multiple reset, a current-to-voltage(I-V) converter with a wide dynamic range was produced. The converter consists of a trans-impedance amplifier(TIA), an analog-to-digital converter(ADC), and an N-bit counter. The digital output of the I-V converter is composed of higher N bits and lower bits, obtained from the N-bit counter and the ADC, respectively. For an input current that has departed from the linear region of the TIA, the counter increases its digital output, this determines a reset current which is subtracted from the input current of the I-V converter. This current-mode reset is repeated until the input current of the TIA lies in the linear region. This I-V converter is realized using 0.35 ${mu}m$ LSI technology. It is shown that the proposed I-V converter can increase the maximum input current by a factor of $2^N$ and widen the dynamic range by $6^N$. Additionally, the I-V converter is successfully applied to a photometric sensor.