Patent ID: 7016220

Claim:
A magneto-resistive random access memory (MRAM), comprising: a first current sinking circuit to convert a current flowing from an MRAM cell to a sense amplifier node into a voltage and to control an amount of said current at a predetermined level during a data read operation; a second current sinking circuit to convert a current flowing from a reference MRAM cell to a reference node into a reference voltage and to control an amount of said current at a predetermined level; and a sense amplifier to compare the voltage from the first current sinking circuit with the reference voltage from the second current sinking circuit, and amplify the comparison result; wherein the first current sinking circuit comprises a first pull-down element to convert the current from the MRAM cell into a first voltage, a first inverting element to invert and amplify the first voltage from the first pull-down element and a switching means to output a stable signal in response to the output signal from the first inverting element; and wherein the second current sinking circuit comprises a second pull-down element to convert the current from the reference MRAM cell into a second voltage, a second inverting element to invert and amplify the second voltage from the second pull-down element and a second switching means to output a stable signal in response to the output signal from the second inverting element.