| 摘要 |
<p>PROBLEM TO BE SOLVED: To directly drive a coaxial transmission line by providing a serial terminating circuit for serially terminating and matching the characteristic impedance of the transmission line by being directly inserted between a differential driver and the differential transmission line and including a prescribed impedance at a differential driver output point. SOLUTION: A matched termination circuit 31 is composed of an impedance matching part 31m and a serial terminating circuit 31st. The impedance matching pet 31m is composed of two resistors and a bypass capacitor, and the positive/negative output terminal of a differential driver and the circuit ground are connected by the impedance of prescribed resistance in the manner of high frequency. Therefore, an output impedance at the output terminal of the differential driver can be made into prescribed low impedance. Thus, by combining the serial terminating circuit 31st, impedance matching part 31m and differential driver, the serial termination can be matched with the transmission line and a high frequency component caused by a peaking circuit in the serial terminating circuit 31st can be compensated.</p> |
