Patent ID: 7345526

Claim:
A linear-in-dB current generator, comprising: a first transistor coupled between a first node and a first power voltage, comprising a control terminal; a first resistor coupled between the control terminal of the first transistor and a second node; a second transistor coupled between the second node and a second power voltage, comprising a control terminal coupled to the first node; a first current source coupled between the second node and the first power voltage; a third transistor comprising a first terminal coupled to the second power voltage, a control terminal coupled to the first node, and a second terminal; a second resistor coupled between the second terminal of the third transistor and a third node; a fourth transistor comprising a first terminal coupled to the first power voltage, a control terminal coupled to the third node, and a second terminal outputting an output current; a second current source coupled between the first power voltage and the third node; and a reference current source coupled between the second power voltage and the first node.