In a non-volatile semiconductor memory device, a constant current circuit is arranged in parallel with an NMOS diode converting a detected current on the array cell side to a voltage, and a constant current circuit is arranged in parallel with an NMOS diode converting a detected current on the reference...http://www.google.es/patents/US6611468?utm_source=gb-gplus-sharePatente US6611468 - Non-volatile semiconductor memory device having sensitive sense amplifier structure
Non-volatile semiconductor memory device having sensitive sense amplifier ...