Patent ID: 8049535

Claim:
A sense amplifier comprising: a comparator including a first input coupled to a reference voltage node, a second input coupled to a data voltage node, and an output providing a signal indicative of a difference in voltages on the reference and data voltage nodes; circuitry coupled to the comparator that loads one or both of a reference cell and/or a data cell, the circuitry comprising a first transistor including first and second terminals spaced apart with a channel there between and including a gate for controlling current in said channel, wherein the first terminal is coupled to a voltage supply, and the second terminal is coupled to the reference cell, the data cell, and/or the comparator; an impedance circuit coupled to the first input, the impedance circuit comprising circuitry including one or more resistors, wherein the circuitry is configured to apply a voltage to the reference voltage node; wherein the first transistor functions as a current mirror to a second transistor of a load circuit serving as a load to the data column.