Miles & Stockbridge P.C.
Switching circuit and semiconductor integrated circuit device
Provided is a switching circuit capable of transmitting a signal with large amplitude and large current while suppressing deterioration when a small-amplitude signal is transmitted. The switching circuit 100 includes a first terminal a, a second terminal b, a first switch 1, a second switch 2, a first separation switch 3a, and a second separation switch 3b. The first switch 1 connects the first terminal a and the second terminal b according to a control signal. The second switch 2 has a first node n1 and a second node n2, and connects between the nodes in synchronization with the first switch 1. The first separation switch 3a transmits a signal of the first node n1 to the second node n2 when an electric potential of the first node n1 is higher than that of the second node n2 by more than a predetermined electric potential. The second separation switch 3b transmits a signal of the first node n1 to the second terminal b when an electric potential of the first node n1 is higher than an electric potential of the second node n2 by more than a predetermined electric potential.
Hitachi, Ltd.
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inventional inventional additional
Hiroyasu Na Yoshihiro Satoshi Shunsuke
Yoshizawa Li Hayashi Hanazawa Kubota