| 摘要 |
PROBLEM TO BE SOLVED: To reduce radiation noise and power supply/ground noise and to attain low power consumption. SOLUTION: A differential output circuit comprises resistors 21 to 23 which are connected in series to form potential points 24, 25 obtained by dividing potential between power supply potential and ground potential, a smoothing capacitor 26 connected between both the potential points 24, 25, a first switch 27 inserted between the potential point 24 having higher potential out of the potential points 24, 25 and a first output terminal 28, a second switch 30 inserted between the potential point 25 having lower potential out of the potential points 24, 25 and the first output terminal 28, a third switch 33 inserted between the potential point 25 and a second output terminal 34, and a fourth switch 36 inserted between the potential point 24 and the second output terminal 34. The first and second switches 27, 30 and the third and fourth switches 33, 36 are respectively complementarily opened and closed to simultaneously obtain logical output signals to be transited to mutually opposite polarities from the first and second output terminals 28, 34. COPYRIGHT: (C)2006,JPO&NCIPI
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