Patent ID: 7692447

Claim:
Driver circuit comprising at least two main units (MU) each comprising at least two sub units (SU) coupled with a data output (dout) of the driver circuit that is connectable to a transmission line (TL), wherein: each sub unit (SU) is adapted to represent a respective predetermined impedance and is adapted to be switchable to either a first reference potential or to a second reference potential depending on a data signal to transmit over the transmission line (TL); each main unit (MU) comprises an individual enable signal input and is adapted to select either an enabled mode, in which the predetermined impedances of its sub units (SU) determine its output impedance, or a disabled mode, in which the respective main unit (MU) adopts a high impedance state independent of the predetermined impedances of its sub units (SU), dependent on an enable signal (EN) provided at the enable signal input; each main unit (MU) further comprises an individual data signal input for each sub unit (SU) and is adapted to control the switching of the respective sub unit (SU) to the first reference potential and to the second reference potential dependent on an individual data signal provided at the respective individual data signal input; and the respective data signal inputs of corresponding sub units (SU) of all main units (MU) are electrically connected; further comprising: a pre-distortion control unit (PDCTRLU) with a data input (din) for inputting the data signal to transmit and a respective data signal output for each data signal input of the corresponding sub units (SU), one time delay clement (TDE) or two or more than two time delay elements (TDE) arranged logically in series adapted to delay the data signal provided at the data input (din) for one, two or more than two predetermined time units, respectively, and a sub unit mapping logic (SL) adapted to select for each data signal output one of the delayed data signals or the undelayed data signal dependent on a predetermined pre-distortion mode (PDMODE).