SYMMETRICAL OPTICAL RECEIVER

摘要

The invention relates to a symmetrical optical receiver comprising a photodiode (Ph) and a symmetrical transimpedance amplifier (TIA). The cathode (K) and the anode (A) of the photodiode (Ph) are connected via a first capacitor (C1) and second capacitor (C2), respectively, to the first input and second input, respectively, of the symmetrical transimpedance amplifier (TIA). By means of first means (1) and second means (2), a current corresponding to the low-pass-filtered cathode voltage and anode voltage, respectively, is conducted into the cathode (K) and conducted away from the anode (A), respectively. The symmetrical optical receiver according to the invention makes it possible to realize, in particular, a lower limiting frequency at a low level with comparatively small coupling capacitances (C1, C2) and with a small circuitry outlay. Moreover, a relatively high voltage drop across the photodiode can be created even with small supply voltages.