Patent ID: 8476973

Claim:
A switch device, comprising: a plurality of differential switches formed in a semiconductor substrate, each of the plurality of differential switches having a first differential transistor and a second differential transistor, wherein: in each of the plurality of differential switches, one of a source and a drain of the first differential transistor is electrically connected to a first output node, the other one of the source and the drain of the first differential transistor is electrically connected to an input node corresponding to the differential switch, and a first control signal corresponding to the differential switch is supplied to a gate of the first differential transistor, one of a source and a drain of the second differential transistor is electrically connected to a second output node, the other one of the source and the drain of the second differential transistor is electrically connected to the input node corresponding to the differential switch, and a second control signal corresponding to the differential switch is supplied to a gate of the second differential transistor, all first output nodes of the plurality of differential switches are electrically connected to a common first output terminal and all second output nodes of the plurality of differential switches are electrically connected to a common second output terminal, and the plurality of differential switches are placed in the semiconductor substrate in such a manner that the first differential transistors are adjacent to each other and the second differential transistors are adjacent to each other.