대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 1993년도 정기총회 및 추계학술대회 논문집 학회본부
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- Pages.335-337
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- 1993
싱글칩 마이크로프로세서에 의한 프로그래머블 2중 적분형 A/D 변환기의 개발
A Design of Programmable Dual Slope A/D Converter by Single Chip Microprocessor
- Choi, G.S. (Dept. of Electrical Engineering, Kang Won National University) ;
- Park, C.w. (Dept. of Electrical Engineering, Kang Won National University)
- 발행 : 1993.11.26
초록
Offset voltage and drift characteristics of operational amplifier are critical factor to precision AID conversion System. In this study, a method is suggested to design the programmable A/D conversion system which has high resolution and low drift characteristics. First, hardware was designed to reduce the offset voltage of integrator and comparator, and analog switches are connected to reduce the drift characteristics of operational amplifier. And then, a calibration software technique was performed to obtain the stable data from A/D converter. The main advantage of our method is high precision A/D converter can be constructed with low cost and high confidence. Therefore proposed method is expected to be used in the industrial field where a high precision measurement is required.
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