Sense Amplifier Regeneration Stage Without Switch IR Drop

The patent removes the third regeneration-stage switch from the signal path by using clock-driven inverters to dynamically control the cross-coupling connections. This extraction eliminates the IR voltage drop that occurred across the switch, maintaining full supply voltage across the cross-coupled inverters during the decision phase while preserving phase operation capability through the clock-driven control mechanism.

The patent employs clock-driven inverters that dynamically switch the cross-coupling connections between the differential pairs and the cross-coupled inverters based on the clock signal phase. During the decision phase, the cross-coupling is enabled to provide strong regenerative feedback, while during sensing and reset phases, the cross-coupling is disabled. This dynamic control eliminates the need for a third switch in the supply path, maintaining maximum supply voltage and improving bit decision speed.

The patent uses clock-driven inverters to dynamically control the cross-coupling connections. During the decision phase, the cross-coupling is activated to maximize regenerative gain, while during sensing and reset phases, the cross-coupling is deactivated. This dynamic switching allows the circuit to achieve maximum regenerative gain when needed while maintaining the ability to perform all required operations.

The patent employs periodic clock signals to control the activation and deactivation of the cross-coupling connections in a phased manner. The clock-driven inverters switch the cross-coupling state periodically, enabling strong regenerative feedback during the decision phase while allowing sensing and reset operations during other phases. This periodic action ensures that high regenerative gain is achieved only when required for bit decision rendering.