A new low-voltage and high-speed sense amplifier is presented,based on a very simple direct currentmode comparison.It adopts low-voltage reference current extraction and a dynamic output method to realize its performance indicators such as low voltage,low power and high precision.The proposed amplifier can sense a 0.5 μA current gap and work with a lowest voltage of 1 V.In addition,the current power of a single amplifier is optimized by 15％.
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