Dynamic comparator, electronic equipment and implementation method thereof

Abstract

The invention relates to a dynamic comparator, electronic equipment and an implementation method thereof, and belongs to the field of dynamic comparators. The dynamic comparator comprises a preamplifier, a first-stage tail current switch Mn0b, a capacitor CT1, a capacitor CT2, a second-stage tail current switch Mp4 and a comparison component, and the preamplifier is connected with the comparison component through a node o1n and a node o1p. The dynamic comparator is realized by adopting a charge rudder structure formed by the switch and the capacitor, and the speed of the dynamic comparator isincreased while the circuit layout area and the power consumption are reduced.

Description

technical field

[0001] The invention belongs to the field of dynamic comparators, and in particular relates to a dynamic comparator, electronic equipment and a realization method thereof. Background technique

[0002] The most basic building block in an analog-to-digital converter is the comparator unit. Its function is to compare the voltage level of the two ends of the input, and then output a valid signal. The accuracy, speed, and power consumption of the comparator directly determine the performance of the analog-to-digital converter. Commonly used comparators include static comparators and dynamic comparators. Since the tail current of the static comparator always exists, it consumes more power than the dynamic comparator. The dynamic comparator has the advantages of high comparison speed, zero static power consumption and small occupied area, and is widely used in high-speed and low-power analog-to-digital converters.

[0003] A commonly used high-speed dynamic comp...

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