slides
Design of High Speed Analog-tかDigitalConverters
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Abstract
In order toalleviate the effect of the settling time of an operational
amplifier used in a serial A-D converter, the following two methods are
proposed :
1. The m most significant bits are obtained by a parallel converter, the
remaining bits being obtained by a serial converter.
2. The m most significant bits are obtaned by direct use of a high speed
comparator instead of the operational amplifier. Conversion errors incurred
due to the poor gain of the comparator are corrected for during the succeeding
conversion process using the operational amplifier