| 摘要 |
In the optical receiving device, two anti-parallel-connected photodiodes are provided. The output signals of the photodiodes are supplied to the two inputs of a differential amplifier, preferably via transimpedance amplifiers. In this manner, the useful output signals of the photodiodes occur amplified at the output of the differential amplifier, but the electromagnetic interference signals coupled into the photodiode circuit branches with the same phase cancel out. |
