Patent ID: 7952416
Filing Date: 2011-05-31
Classification: G06G

Abstract:
1. A temperature compensation circuit for a detector having an input signal, the temperature compensation circuit comprising: a first fixed bias current source; a second fixed bias current source; a third fixed bias current source; a first junction having a first terminal connected to the first fixed bias current source; a second junction having a first terminal connected to the second fixed bias current source and a second terminal connected to a second terminal of the first junction; a first transistor having a first terminal connected to the third fixed bias current source, a second terminal connected to the first terminal of the first junction, and a third terminal to output a first current; and a second transistor having a first terminal connected to the third fixed bias current source, a second terminal connected to the first terminal of the second junction, and a third terminal to output a second current; where the first, second and third fixed bias current sources generate bias currents that are independent of the input signal.