| 摘要 |
A reception circuit according to the present invention is a reception circuit (6) that operates based on a first power supply GND1 belonging to a first power supply system and receives, through an AC coupling element (10), a transmission signal V1 output by a transmission circuit (5) that operates based on a second power supply GND2 belonging to a second power supply system, the reception circuit including: a noise rejection unit (21) that generates a transmission-use signal V2a by reducing a signal level of noise between the power supplies generated in the AC coupling element (10) due to a potential difference between the first power supply GND1 and the second power supply GND2; and a reception buffer (22) that reproduces a data signal based on the transmission-use signal. This prevents a malfunction from occurring due to noise between the power supplies caused by a relative potential variation between the power supply of the transmission circuit and the power supply of the reception circuit. |
