| 摘要 |
PROBLEM TO BE SOLVED: To provide a selector circuit that can surely reduce switching noise with a simple configuration. SOLUTION: The selector circuit for selecting either of a signal source [1]: 1 and a signal source [2]: 2 providing a different reference voltage is provided with a selector switch SW [1]: 3 and a selector switch SW [2]: 4 provided respectively corresponding to the signal source [1]: 1 and the signal source [2]: 2, a switch control circuit 5 that applies a control signal to the selector switch SW [1]: 3 and the selector switch SW [2]: 4 to conduct on/off control, and a signal control means comprising an integrator 8 placed between the selector switch SW [1]: 3 and the selector switch SW [2]: 4 and the switch control circuit 5 to slowly control the switching operation of the selector switch SW [1]: 3 and the selector switch SW [2]: 4 from on to off or vice versa in response to lapse of time.
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