Patent ID: 7071670
Filing Date: 2006-07-04
Classification: G05F

Abstract:
1. A circuit for producing a reference voltage between a first node and a second node, comprising: a resistive element and a junction device coupled in series between the first node and the second node, wherein the junction device includes a junction and has a negative temperature coefficient; a first and a second current sources to route respectively a first and a second bias currents to the resistive element and to the junction device such that a resulting first branch current through the resistive element is unequal to a resulting second branch current through the junction device, wherein the first current source is adapted to transmit the first bias current through the resistive element, and wherein the second current source is adapted to transmit the second bias current through the junction device for biasing the junction, without transmitting the second bias current through the resistive element; and wherein the first bias current reaches the intermediate node after the resistive element and before the junction device; and a third current source to extract a drained current from the intermediate node.