Patent ID: 7227399

Claim:
A differential voltage level shifting circuit, comprising: a differential input voltage receiving means for coupling to a pair of complementary differential voltages; a pair of voltage level shifting means connected to the differential input voltage receiving means, each of the pair of voltage level shifting means being configured to concurrently produce both a shifted version of said differential input voltage and a non-shifted version essentially equal to and in phase with said shifted version; a pair of current regulation means associated with the pair of level shifting means being configured to provide a regulated current; and a voltage regulation means for configuring said current regulation means, wherein said voltage regulation means is a current mirror configured as a voltage generation means coupled in series with a reference current device; said reference current device is configured to produce a current which passes through said voltage generation means producing said regulated voltage, whereby a magnitude of said regulated voltage produced is proportional to a magnitude of said current passing through said voltage generation means.