| 主权项 |
1. A signal filtering device, comprising:
a photoelectric conversion unit, converting a light signal into an electric signal; a transimpedance amplifier, having a positive input terminal coupled to a ground; a feedback impedance unit, coupled between an output terminal of the transimpedance amplifier and a negative input terminal of the transimpedance amplifier; a direct current (DC) filtering unit, coupled between the photoelectric conversion unit and the negative input terminal of the transimpedance amplifier, and filtering a DC component of the electric signal; and an input signal adjusting unit, coupled to the photoelectric conversion unit, reducing the DC component of the electric signal flowing through the DC filtering unit, and adjusting an alternating current (AC) component of the electric signal. |
