Patent ID: 7764059

Claim:
A voltage reference circuit comprising: a first transistor having a first active area, a first current carrying electrode, a second current carrying electrode, and a control electrode wherein the first active area is configured to form a first Vbe and wherein the first transistor is not coupled in a diode configuration; a second transistor having a first current carrying electrode, a second current carrying electrode, a control electrode, and a second active area that is smaller than the first active area wherein the second active area is configured to form a second Vbe that is greater than the first Vbe and wherein the second transistor is not coupled in a diode configuration; a first resistor coupled to receive a difference between the first Vbe and the second Vbe, the first resistor having first and second terminals; and an operational amplifier having a first input coupled to the first current carrying electrode of the first transistor and a second input coupled to the first current carrying electrode of the second transistor.