Patent ID: 7649792
Filing Date: 2010-01-19
Classification: G11C

Abstract:
1. A sense amplifier comprising: a first FET of a first conductive type in which a drain is connected to a first output node, a gate is connected to a second output node, and a source is connected to a first power source node; a second FET of a first conductive type in which a drain is connected to the second output node, a gate is connected to the first output node, and a source is connected to the first power source node; a third FET of a second conductive type in which a drain is connected to the first output node, a gate is connected to the second output node, and a source is connected to a first input node; a fourth FET of a second conductive type in which a drain is connected to the second output node, a gate is connected to the first output node, and a source is connected to a second input node; a fifth FET of a second conductive type in which a drain is connected to the first input node, and a source is connected to a second power source node; and a sixth FET of a second conductive type in which a drain is connected to the second input node, and a source is connected to the second power source node, wherein the sense operation is started by charging or discharging the first output node from the first input node with a first current and by charging or discharging the second output node from the second input node with a second current, and the fifth and sixth FETs are turned off at starting the sense operation and turned on after starting the sense operation.