Patent ID: 7239537

Claim:
A method for calibrating an MRAM current sense amplifier, the method comprising: configuring a first plurality of trim transistors in parallel with a first side of a current mirror device within a comparator, said first side of said current mirror device associated with a data side of the sense amplifier; configuring a second plurality of trim transistors in parallel with a second side of said current mirror device, said second side associated with a reference side of the sense amplifier; and individually activating one or more of said first and said second plurality of trim transistors so as to compensate for a determined device mismatch with respect to the data and reference sides of the sense amplifier; wherein said current mirror device further comprises a first transistor on said first side thereof and a second transistor on said second side thereof; and said first and second plurality of trim transistors, when activated, are configured to increase the respective widths of said first and second transistors of said current mirror device.