Patent ID: 7965476

Claim:
A current producing circuit comprising: a first current source that applies a first current, the first current being changed at a first rate with respect to a temperature; a second current source that applies a second current, the second current being changed at a second rate with respect to the temperature, and the second rate being different from the first rate; a third current source that applies a third current, the third current being changed at a third rate with respect to the temperature; a fourth current source that applies a fourth current, the fourth current being changed at a fourth rate with respect to the temperature; a fifth current source that applies a fifth current, the fifth current being changed at a fifth rate with respect to the temperature and the fifth rate being different from the fourth rate; a first differential output unit that supplies a first differential current based on a difference between the first current and the second current; a differential output unit that supplies a second differential current based on a result of subtracting the fourth current from the fifth current; a computing unit that adds or subtracts the first differential current to or from the third current; a computing unit that adds or subtracts the second differential current to or from the third current; a first differential current producing circuit that produces a current with a temperature higher than a first temperature at a point where a current value of the first current and a current value of the second current intersect; and a second differential current producing circuit that produces a current with a temperature lower than a second temperature at a point where a current value of the fourth current and a current value of the fifth current intersect.