Abstract
A sensing amplifier using the capacitive coupling to realize a dynamic reference voltage includes a bit line, used to receive charging and discharging signals; a sensing amplifier, connected to the bit line and used to receive the bit line and a reference voltage for comparison and enlarge the voltage difference between a high point and a low point; and a reference voltage generator, connected to the sensing amplifier to generate the reference voltage required for the sensing amplifier to compare. The sensing amplifier effectively enhances the sensing margin of the sensing amplifier circuit; and in addition to accelerate the access speed, the sensing amplifier can easily determine the correct stored data and further quickly solve the problems of high-speed storing the data by the storage units.