Low power high speed low offset regenerative comparator

In high speed ADC, a comparator directly influence the overall performance of ADC. In his paper we are reviewing different techniques for designing of comparators used in analog-to-digital converters. Following is a review for different techniques of low offset, high speed and regenerative type of preamplifier and latch structure. Two stages (preamplifier and latch) of comparator is provide a high speed which can then be implemented for low offset, high gain, low threshold and low power. This implementation gives a high performance of a comparator. We are presenting details analysis of different techniques in this.