Patent ID: 7495485

Claim:
An integrated circuit, comprising a phase locked loop ( 1 ), in which a controllable current source ( 12 ) is provided for at least indirect control of a controllable oscillator ( 16 ) of the phase locked loop ( 1 ), wherein the controllable current source ( 12 ) comprises: a first and a second supply terminal (K 1 , K 2 ) for the application of a first and a second supply potential (V 1 , V 2 ) respectively, an output terminal (Kout) for the delivery of an output current, connected via a first controllable current path (T 1 ) with the first supply terminal (K 1 ), and via a second controllable current path (T 2 ) with the second supply terminal (K 2 ), and a replica (T 1 ′, T 2 ′) of the current paths (T 1 , T 2 ) in their non-controlled state, of which a replica output terminal (Kout′) is connected via a current mirror (T 5 -T 8 ) with the output terminal (Kout), and wherein a supply voltage of the current mirror (T 5 -T 8 ) is adjusted as a function of a voltage or a potential that is tapped in the region of the oscillator ( 16 ).