Nxp B.v.

Volker Stefan Gierenz

Hendrik Ten Pierick

An automatic gain control circuit has a gain determination circuit (B) which determines a first gain factor (g), and a first gain controller (B) which controls an amplitude of an input signal (S) with the first gain factor (g) to supply a gain controlled signal (S). A processing circuit (B; B, B) with a predetermined limited dynamic range processes the gain controlled (S) to obtain an output signal (S; S). The automatic gain control circuit further comprises a compensation circuit (B) which determines a second gain factor (dg) based on the first gain factor (g) and input parameters (DL, TR, DV) which define a time variation of the second gain factor (dg), and a second gain controller (B; B) which receives the second gain factor (dg) to obtain a compensated output signal (S) that is substantially compensated for an amplitude change of the gain controlled signal (S) due to a change of the first gain factor (g).

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Aachen, Germany

Volker Stefan Gierenz