Patent ID: 8693240
Filing Date: 2014-04-08
Classification: G11C,H01L

Abstract:
1. A magnetic random access memory (MRAM) array comprising: a magnetic tunnel junction (MTJ) to be read using a magnetic state of the MTJ, the MTJ being read by applying a current therethrough; a reference MTJ; a sense amplifier coupled to the MTJ and the reference MTJ, the sense amplifier operable to compare the voltage of the MTJ to the reference MTJ in determining the state of the MTJ; a first capacitor coupled to the sense amplifier at a first end and to ground at a second end; and a second capacitor coupled to the sense amplifier at a first end and to ground at a second end, wherein a sequence of short voltage pulses are applied to the first end of each of the first and second capacitors when reading the MTJ thereby making the current flowing through the MTJ flow therethrough for small time intervals and avoiding read disturbance to the MTJ.