Patent attributes
The invention relates to a sense amplifier comprising the following element: a first current mirror unit coupled to a high voltage source, outputting a first current and a second current according to a first reference current, wherein the second current is twice the first current; a second current mirror unit coupled to a high voltage source, outputting a third current according to a second reference current; a first impedor coupled to the second current and a low voltage source; a second impedor coupled to the third current and a low voltage source; a third current mirror coupled to the first, second and third currents, and the first current is regarded as the reference current of the third current mirror unit, thus, the current which flows through the first impedor is the first current, and the current which flows through the second impedor is a fourth current.
