Semiconductor device, module, and electronic device including a conversion circuit having a second switch rendered conductive together with a first switch
First Claim
1. A semiconductor device comprising:
- an input terminal to receive an input potential, anda conversion circuit to receive and shift a first signal to output a second signal based on said input potential as a reference, wherein said conversion circuit includes;
a capacitor connected between a first node to which said first signal is input and a second node from which said second signal is output,a first switch provided between said second node and an intermediate node, anda second switch provided between said intermediate node and said input terminal, rendered conductive together with said first switch.
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Accused Products
Abstract
The breakdown voltage between the potential of a terminal and the ground potential (or power supply potential) is improved by increasing the gate width of an MOS transistor included in a switch. Accordingly, another switch and the like are protected even when surge is applied to the terminal. By increasing the gate width of the MOS transistor included in the switch, the size of the other switch does not have to be increased. Therefore, variation in the potential at a node occurring when the other switch attains a non-conductive state from a conductive state can be suppressed. Therefore, a semiconductor device having the electrostatic breakdown voltage improved without influence on processing carried out based on an input potential from an external source, a module including a plurality of such semiconductor devices, and an electronic device including such a module can be provided.
151 Citations
18 Claims
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1. A semiconductor device comprising:
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an input terminal to receive an input potential, and a conversion circuit to receive and shift a first signal to output a second signal based on said input potential as a reference, wherein said conversion circuit includes; a capacitor connected between a first node to which said first signal is input and a second node from which said second signal is output, a first switch provided between said second node and an intermediate node, and a second switch provided between said intermediate node and said input terminal, rendered conductive together with said first switch. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A module, comprising:
a plurality of semiconductor devices, each of said plurality of semiconductor devices including; an input terminal to receive an input potential, and a conversion circuit to receive and shift a first signal to output a second signal based on said input potential as a reference, wherein said conversion circuit includes; a capacitor connected between a first node to which said first signal is input and a second node from which said second signal is output, a first switch provided between said second node and an intermediate node, and a second switch provided between said intermediate node and said input terminal, rendered conductive together with said first switch. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An electronic device, comprising:
a module including a plurality of semiconductor devices, each of said plurality of semiconductor devices including; an input terminal to receive an input potential, and a conversion circuit to receive and shift a first signal to output a second signal based on said input potential as a reference, wherein said conversion circuit includes; a capacitor connected between a first node to which said first signal is input and a second node from which said second signal is output, a first switch provided between said second node and an intermediate node, and a second switch provided between said intermediate node and said input terminal, rendered conductive together with said first switch. - View Dependent Claims (14, 15, 16, 17, 18)
Specification