The CMOS high-voltage sensor circuit has a voltage reference including, for example, of four N-channel MOS transistors; one pass-gate P-channel transistor; one current-mirror P-channel MOS transistor; and a conventional high-voltage sensor including, for example, of two P-channel MOS transistors and...http://www.google.fr/patents/US5397946?utm_source=gb-gplus-shareBrevet US5397946 - High-voltage sensor for integrated circuits
