A charge sharing technique for high-speed double-tail comparators is presented. This technique is applied to the pre-amplifier stage of the dynamic comparators so that the maximum differential gain is applied to the latch during the latching process reducing the input referred offset voltage. In dynamic comparators a large portion of the input referred offset voltage is coming from the latch, and the proposed technique is introduced to alleviate this issue. Monte- Carlo simulations show that the proposed technique reduces the offset voltage from 16 ​mV to 8 ​mV. Due to the charge sharing technique, the pre-amplifier draws just enough power for its operation reducing the average power by 40% compared to the conventional comparator. Therefore, the proposed charge sharing technique considerably reduces the offset voltage and power consumption while the speed is better in the whole range of the input common mode voltage.

提出了一种用于高速双尾比较器的电荷共享技术。这项技术应用于动态比较器的前置放大器级，从而在锁存过程中将最大差分增益应用于锁存器，从而降低了输入参考偏置电压。在动态比较器中，输入参考偏置电压的很大一部分来自锁存器，因此引入了所提出的技术来缓解这一问题。蒙特卡罗模拟表明，所提出的技术将失调电压从16 mV降低到8 mV。由于采用了电荷共享技术，因此与常规比较器相比，前置放大器仅消耗足够的功率来进行操作，从而将平均功率降低了40％。因此，