Research of the 1.5Bit Flash ADC unit circuit
Han Zhi-gan · Microcomputer Information · 2010
This paper completes the design of a dynamic comparator and a Flash ADC unit circuit with CMOS technology. In all kinds of ADC,since the structure of the Flash can maintains low power consumption,and reduce the time of AD conversion at the same time,is a more optimal choice. With a switched-capacitor dynamic structure of whole difference,the comparator can effectively reduce the voltage imbalance. In this paper,the ADC unit circuit is simulated and verified with HSPICE. This circuit can process 20MHz analog signal under 100MHz clock signal.