Patent ID: 7859929

Claim:
A sense amplifier, comprising: a first supply node having associated therewith a first supply voltage level; a second supply node having associated therewith a second supply voltage level; the first supply voltage level being greater than the second supply voltage level; a ground node having associated therewith a ground voltage level; cross-coupled inverters having a first sense node and a second sense node; the cross-coupled inverters operatively coupled between the ground node and the second supply node for sensing voltage; a first sampling transistor and a first supply transistor coupled in series for pass gating between the first supply voltage level and the first sense node; a second sampling transistor and a second supply transistor coupled in series for pass gating between the first supply voltage level and the second sense node; each of the first sampling transistor and the second sampling transistor gated by a sample signal; the first supply transistor having a transfer bus coupled to a gate thereof; the second supply transistor being gated by a sense reference voltage; the sense reference voltage being between the first supply voltage level and the second supply voltage level; each of the first supply transistor and the second supply transistor back body biased with a write voltage; and the write voltage having a write voltage level being between the second supply voltage level and the ground voltage level.