Preamplifier gain of conventional double tail dynamic comparator is analyzed

and a new comparator with high gain of pre-amplifier and lower input referred offset voltage is presentd. Beside

this comparator has a low sensitivity to kickback noise since there is a high impedance path between inputs and outputs of the pre-amplifier.The proposed comparator and the previous comparators are compared and simulated in TSMC 0. 18 μm technology amd 1. 8 V. Results of simulation show that

the proposed double-tail comparator achieves a kickback noise of3 m V

and it has advantages of lower input referred offset voltage and low power consumption

the proposed doubletail comparator is suitable for low kickback noise

low offset application fields.