Process variation tolerant sense amplifier flop design

摘要

One embodiment of the present invention sets forth a sense amplifier flop design that is tolerant of process variation. Specific staging of signal transitions through the sense amplifier flop circuit eliminate operational phases involving short-circuit currents between n-channel field-effect transistors (N-FETs) and p-channel field effect transistors (P-FETs) in a complementary-symmetry metal-oxide semiconductor process. By eliminating short-circuit currents between N-FETs and P-FETs within the sense amplifier flop, a large variation in conductivity ratio between N-FETs and P-FETs may be tolerated by the sense amplifier flop. This tolerance to conductivity ratio translates to a tolerance for process variation by the sense amplifier flop circuit.