Abstract
AbstractWith the development of microcomputers and signal processors in recent years, A/D and D/A converters have increased their importance as analog/digital interfacing circuits. In the past, various types of A/D and D/A converters have been proposed and implemented for practical use. However, they do not necessarily satisfy the requirements for miniaturization, power saving, and low cost. In this paper we have proposed two A/D converters and one D/A converter which utilize the characteristics of a switched capacitor amplifier with switched capacitor bias and load circuits. Their principle, circuit configurations and experimental results are presented. In the proposed A/D and D/A converters only one active element is used. Also the capacitor is much smaller than in the conventional converters. Therefore, the proposed converters are advantageous as an analog/digital interfacing circuit with respect to miniaturization, power saving, and low cost. Experimentally, 5‐bit A/D and D/A converters were built with discrete components and tested. The obtained result confirmed their proper application with a linearity of ± 1/2 LSB.
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