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Accurate Dual Slope Analog-to-Digital Converter Using Bootstrap Circuit

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6 Author(s)
Julsereewong, A. ; Fac. of Eng., King Mongkut ''s Inst. of Technol. Ladkrabang, Bangkok, Thailand ; Pongswatd, S. ; Riewruja, V. ; Sasaki, H.
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This paper presents a simple and inexpensive implementation of the accurate dual slope analog-to-digital converter (ADC). The proposed technique with positive reference voltage takes advantages of a bootstrap circuit to function as a precise noninverting/ inverting integrator. To achieve the constant reference voltage during integrating analog input voltage interval, a sample/hold (S/H) circuit is employed. Experimental results are given to confirm the operation of the proposed ADC.

Published in:

Innovative Computing, Information and Control (ICICIC), 2009 Fourth International Conference on

Date of Conference:

7-9 Dec. 2009