SENSE AMPLIFIER EMPLOYING CONTROL CIRCUITRY FOR DECOUPLING RESISTIVE MEMORY SENSE INPUTS DURING STATE SENSING TO PREVENT CURRENT BACK INJECTION, AND RELATED METHODS AND SYSTEMS

摘要

Sense amplifiers employing control circuitry for decoupling resistive memory sense inputs during state sensing to prevent current back injection, and related methods and systems are disclosed. In one embodiment, sense amplifier is provided. The sense amplifier comprises a differential sense input coupled to bit line. The sense amplifier also comprises a differential reference input coupled to reference line. First inverter inverts first inverter input into first inverter output coupled to second inverter input of second inverter, first inverter output configured to provide state of bitcell. Second inverter inverts second inverter input into second inverter output coupled to first inverter input. Control circuit couples differential reference input to first inverter and differential sense input to second inverter in latch mode, and decouples differential reference input to first inverter and differential sense input to second inverter in sensing mode to provide sensed state of bitcell on first inverter output.