Random number generator on IC with significantly improved independence of both signals

摘要

The random number generator has first and second clock generator circuits (2,13) with separate power supplies (4,15) for producing signals of a first and second frequency or frequency range with the second signal's mean frequency lower than the first and a generator in which the first signal is sampled using the second signal to enable generation of at least one random number. The clock generator circuits and/or voltage supplies are mounted as far apart as possible on the IC (1) and/or each circuit has a guard ring (20,21).