Patent ID: 7084614
Filing Date: 2006-08-01
Classification: G11C,H03K

Abstract:
1. A reference voltage generator which generates bias reference voltages in a semiconductor integrated circuit connected to first and fourth potentials to operate, comprising: a first conductivity type first transistor whose source is connected to a second potential between the first and fourth potentials and whose gate and drain are connected to a first node; a current-limiting resistor having one end connected to a third potential between the second and fourth potentials and the other end connected to the first node; a first conductivity type second transistor having a source connected to the second potential, a gate connected to the first node and a drain connected to a second node from which a first reference voltage is outputted; a second conductivity type third transistor having a drain and gate connected to the second node and a source connected to the fourth potential; a second conductivity type fourth transistor having a source connected to the fourth potential, a gate connected to the second node and a drain connected to a third node from which a second reference voltage is outputted; and a first conductivity type fifth transistor having a source connected to the first potential and a gate and drain connected to the third node.