Patent ID: 7428177
Filing Date: 2008-09-23
Classification: G11C

Abstract:
1. A reference potential generating circuit supplied with an input reference potential for generating an output reference potential, said circuit comprising a current mirror amplifier supplied with said input reference potential and a feedback level, an output transistor supplied with an output of said current mirror amplifier as an input for producing said output reference potential as an output, a monitoring portion for generating said feedback level from the output of said output transistor, a first switch for controlling power supply to said current mirror amplifier, a second switch for controlling power supply to said monitoring portion, and an output switch for controlling connection of the output of said output transistor to a next stage, said first and said second switches and said output switch being simultaneously turned off, said first and said second switches being turned on when a first predetermined period elapses after said first, said second, and said output switches are turned off, said output switch being turned on when a second predetermined period elapses after said first and said second switches are turned on.