| 摘要 |
<p>Diodes (3, 4) for causing an excess signal generated in a pad because of static electricity to flow into a power supply (Vcc) are connected to the pad (2) itself not to a metallic line (6) between the pad (2) and an amplifier circuit (7). It is unnecessary to increase the length of the metallic line (6) between the pad (2) and the amplifier circuit (7) to connect the diodes (3, 4), and consequently it is possible to short the length of the line between the pad (2) and the amplifier circuit (7). Thus, noise hardly influences the high-frequency signal transmitted through the lines.</p> |
