OFFSET COMPENSATION FOR SENSE AMPLIFIERS

摘要

A sense amplifier includes a first transistor having a first gate, a second transistor having a second gate in series with the first transistor, a third transistor having a third gate, and a fourth transistor having a fourth gate in series with the third transistor. A first input node is coupled to the third gate and the fourth gate, a second input node is coupled to the first gate and the second gate, and a first compensation transistor is in series with the first and second transistors or the third and fourth transistors, the first compensation transistor having a first compensation bulk. The first compensation bulk receives a first compensation voltage to modify the first compensation threshold, the first compensation voltage having a value calculated to compensate for an offset associated with the first and second input nodes.

主权项

1. A sense amplifier comprising:
a first transistor having a first gate; a second transistor in series with the first transistor, the second transistor having a second gate; a third transistor having a third gate; a fourth transistor in series with the third transistor, the fourth transistor having a fourth gate; a first input node coupled to the third gate and the fourth gate; a second input node coupled to the first gate and the second gate; and a first compensation transistor in series with the first transistor and the second transistor or the third transistor and the fourth transistor, the first compensation transistor having a first compensation bulk, wherein the sense amplifier is configured to have the first compensation bulk receive a first compensation voltage to modify a first compensation threshold, the first compensation voltage having a value calculated to compensate for an offset associated with the first input node and the second input node.