A Study on the Offset Voltage of Dynamic Comparators
نویسندگان
چکیده
Dynamic latched comparators are most used in analog-to-digital converters. In this paper expressions for the calculation of the offset voltage for two most used topologies are derived. These expressions corroborate previously stated results with analytical support as well as providing useful insight for the design of these comparators by analyzing the influence of each transistor pair individually. The results are validated by Monte Carlo simulations considering all the comparators in the input range of a Flash ADC using a 130nm CMOS Technology. Keywords—comparator; resistive divider comparator; differential pair comparator; offset voltage.
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