| 摘要 |
<p>PURPOSE: To reduce the noise effects when the digital signals are transmitted within an integrated circuit. CONSTITUTION: The clock signal CLK (the digital signal to be transmitted) which is outputted from a buffer circuit 1 is transmitted via a conductor pattern 8. Then a signal the inverse of CLK is transmitted via a conductor pattern 9. A differential amplifier 7 reproduces the signal CLK based on the result of voltage comparison obtained between both patterns 8 and 9 which are placed close to each other. Therefore, if a noise occurs on the digital signal of the pattern 8, the noise having a similar waveform to the noise of the pattern 8 occurs also on the pattern 9. In other words, the difference has substantially no variance between both patterns 8 and 9 even if the levels of these patterns vary by the noises. As a result, the noise effects can be eliminated for the output of the amplifier 7.</p> |
