Patent ID: 7920436

Claim:
A sense amplifier, comprising: a first cascode transistor; a second cascode transistor; a first feedback circuit; a second feedback circuit; and a comparator; wherein the drain of the first cascode transistor is connected to a first voltage source, the gate of the first cascode transistor is connected to the first feedback circuit and a first input of the comparator, and the source of the first cascode transistor is connected to the first feedback circuit and a first column decoder; wherein the drain of the second cascode transistor is connected to a second voltage source, the gate of the second cascade transistor is connected to the second feedback circuit and a second input of the comparator, and the source of the second cascode transistor is connected to the second feedback circuit and a second column decoder a first enabling transistor and a second enabling transistor, wherein the source of the first enabling transistor is connected to the first voltage, the gate is connected to an enabling voltage, and the drain is connected to the drain of the first cascode transistor, and wherein the source of the second enabling transistor is connected to the second voltage, the gate is connected to the enabling voltage, and the drain is connected to the drain of the second cascode transistor.