Patent ID: 8378716

Claim:
A bulk-driven current-sense amplifier, comprising: a differential amplifier having a first voltage input terminal, a second voltage input terminal, and a voltage output terminal; a first driver including a first transistor, a first switch, and a first memory unit; the first transistor having a drain coupled to a body of the first transistor and the first voltage input terminal of the differential amplifier to form a first node; and a second driver including a second transistor, a second switch, and a second memory unit; the second transistor having a drain coupled to a body of the second transistor and the second voltage input terminal of the differential amplifier to form a second node, wherein the first and the second transistors are P-type metal-oxide-semiconductor field-effect transistors; and wherein when the first switch and the second switch are turned on, the differential amplifier charges the first and the second node; and when the charging is completed, the first and the second node have a stabilized first potential and a stabilized second potential, respectively, according to currents flowing through the first and the second memory unit, and the differential amplifier generates a voltage output to the voltage output terminal.