Sense amplifier with low common mode differential input signal

摘要

A sense amplifier includes a first amplifier with differential input devices and load inverters for the differential input devices with the load inverters being cross-coupled in a latching configuration. The sense amplifier also includes a second amplifier coupled to the first amplifier, and the second amplifier includes latching inverters cross-coupled in a latching configuration. The double inverter latching action in the first and second amplifiers enhances response speed even with a low common mode reference voltage.