A brief review on novel comparator design

This paper reviewed three different kinds of comparators to show their respective advantage range. The Dynamic-bias comparator extends its pre-amplifier part with a capacitor and has a smaller power with a smaller input referred noise than Elzakker’s comparator but has a higher delay. The Quad high-speed comparator introduced the Quad into the comparator’s latch part. It has a lower delay and also make the calculation of the output voltage easier for it only depends on the skew factor. The low-power dynamic bias has a cross-couple device on its pre-amplifier part which slows down the discharge of the capacitors. It has a higher delay but lower the energy consumption by 30%.