Patent attributes
In order to further develop a circuit arrangement (CR; CR′) for receiving optical signals (SI) from at least one optical guide (GU), said circuit arrangement (CR; CR′) comprising:at least one light-receiving component (PD) for converting the optical signals (SI) into electrical current signals (IPD),at least one transimpedance amplifier (TA), being provided with the electrical current signals (IPD) from the light-receiving component (PD),at least one automatic gain controller (AG) for controlling the gain or transimpedance (R) of the transimpedance amplifier (TA),at least one integrator (IN) in a feedback path (FP), said integrator (IN) generating a control signal (Vint),at least one voltage-controlled current source (CS), being provided with the control signal (Vint) from the integrator (IN),at least one limiter (LI) acting as a comparator and generating in its output a logic level for positive or negative voltages in its input,and a corresponding method in such a way that a multilevel optical link can be provided,at least one second transimpedance amplifier (TA2) arranged in parallel to the transimpedance amplifier (TA), andat least one automatic offset controller (AO) for setting the voltage (Voffset) for the second transimpedance amplifier (TA2)are proposed.
