The authors describe an 8-bit, extremely low-power, flash A/D converter LSI for video-frequency image signal processing. This converter uses a shallow-groove-isolated bipolar VLSI technology. It consumes only 150 mW, which is half the amount of the lowest power consumption so far reported. This low level of power consumption is achieved by the use of a comparator circuit, which is newly designed. This converter can digitize video signals of up to 10 MHz at a conversion rate of 30 MHz. A differential gain (DG) error of 1% and a differential phase (DP) error of less than 0.5/spl deg/ were observed.
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Hotta et al. (1986) studied this question.
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