Patent ID: 7638996

Claim:
A reference current generator circuit comprising: a first current generating circuit part which generates a first current I 1 having a temperature coefficient positive for an ambient temperature T; a second current generating circuit part which generates a second current I 2 having a temperature coefficient negative for the ambient temperature T; an output circuit part which outputs a first voltage V 1 and a first reference current Iref 1 respectively corresponding to the first current I 1 , and a second voltage V 2 and a second reference current Iref 2 respectively corresponding to the second current I 2 ; control means which is inputted with a forward voltage Vd, a voltage Vt, a voltage Vr, and the first and second voltages V 1 and V 2 and generates control voltages corresponding to a difference between the forward voltage Vd and the voltage Vt, a difference between the voltage Vt and the first voltage V 1 , a difference between the forward voltage Vd and the voltage Vr, and a difference between the voltage Vr and the second voltage V 2 , and which controls the first current I 1 and the second current I 1 by the control voltages in such a manner that the inputted voltages Vd, Vt, Vr, V 1 and V 2 are kept at the same potential; and output means which combines the first reference current Iref 1 and the second reference current Iref 2 with each other and outputs a combination thereof as a third reference current Iref having a temperature dependent characteristic and capable of adjusting a current value thereof.