CMOS reference structures (e.g., voltage, current and resistance structures) are provided that are substantially insensitive to temperature, supply voltages and track fabrication processes. The structures include a V.sub.t -referenced source, a sensor and a summer. The source generates a source voltage...http://www.google.se/patents/US6107868?utm_source=gb-gplus-sharePatent US6107868 - Temperature, supply and process-insensitive CMOS reference structures