HIGH-SPEED COMPARATOR FOR ANALOG-TO-DIGITAL CONVERTER

摘要

A comparator for an analog-to-digital converter is provided. The comparator includes a differential amplifier unit that receives a sampling signal and provides an output signal, based on a voltage provided by the sampling signal. The differential amplifier unit includes an input stage that receives the sampling signal and integrates a current on the integration nodes based on potentials of the sampling signal. The comparator includes a sense amplifier coupled with the integration nodes that detects a potential difference and amplifies the potential difference to generate the output signal. The comparator includes a charge injection circuit (30) to inject equal charges into the integration nodes.

主权项

1. An analog-to-digital comparator, comprising:
a differential amplifier unit wherein the differential amplifier unit receives a sampling signal and provides an output signal based on a voltage provided by the sampling signal, wherein the differential amplifier unit includes: an input stage wherein the input stage receives the sampling signal and integrates a current on integration nodes based on potentials of the sampling signal; a sense amplifier coupled with the integration nodes wherein the sense amplifier detects a potential difference and amplifies the potential difference to generate the output signal; and a charge injection circuit wherein the charge injection circuit injects equal charges into the integration nodes.