Patent ID: 6879214
Filing Date: 2005-04-12
Classification: H03F

Abstract:
1. A circuit comprising: a first bias circuit configured to provide a first current to a first node in response to a reference voltage, and draw a first bias current from the first node, wherein the first current is directly related to a temperature of the circuit; and a bias control circuit configured to draw a first bias control current from the first node in response to the reference voltage, wherein the first bias control current is directly related to the temperature of the circuit wherein the bias control circuit comprises: a first transistor having a first power terminal coupled to the first node and a second power terminal coupled to ground; a resistive element having a first terminal coupled to receive the reference voltage, and a second terminal coupled to a control terminal of the first transistor; and a second transistor having a first power terminal coupled to the second terminal of the resistive element, a second power terminal coupled to ground, and a control terminal coupled to the control terminal of the first transistor.