Switch circuit device
First Claim
1. A switch circuit device that complementarily switches a path between a common terminal and a first terminal and a path between said common terminal and a second terminal to an ON state and an OFF state, comprising:
- one or a plurality of first field-effect transistors connected in one stage or in a plurality of stages between a first node connected to said common terminal and said first terminal, and each having a gate electrode receiving a first control voltage, one electrode on the side of said first node and the other electrode on the side of said first terminal;
one or a plurality of second field-effect transistors connected in one stage or in a plurality of stages between a second node connected to said common terminal and said second terminal, and each having a gate electrode receiving a second control voltage complementary to said first control voltage, one electrode on the side of said second node and the other electrode on the side of said second terminal; and
a switching circuit for applying a given pull-up voltage to one of said first and second nodes that is connected to a field-effect transistor in an OFF state and isolating from said pull-up voltage one of said first and second nodes that is connected to a field-effect transistor in an ON state.
1 Assignment
0 Petitions
Accused Products
Abstract
A first FET is connected between first and third nodes, a second FET is connected between second and fourth nodes, a third FET is connected between third and fifth nodes and a fourth FET is connected between fourth and fifth nodes. A fifth FET is connected between first and sixth nodes and a sixth FET is connected between second and sixth nodes. The gates of the first, fourth and sixth FETs are connected to a first control terminal and the gates of the second, third and fifth FETs are connected to a second control terminal. A power-supply terminal is connected to the fifth and sixth nodes. The first and second nodes are connected to a common terminal through first and second capacitors, respectively. The fifth and sixth FETs form a pull-up switching circuit. The pull-up switching circuit pulls up the source of an FET in an OFF state to the power-supply voltage and isolates the source of an FET in an ON state from the power-supply voltage.
-
Citations
17 Claims
-
1. A switch circuit device that complementarily switches a path between a common terminal and a first terminal and a path between said common terminal and a second terminal to an ON state and an OFF state, comprising:
-
one or a plurality of first field-effect transistors connected in one stage or in a plurality of stages between a first node connected to said common terminal and said first terminal, and each having a gate electrode receiving a first control voltage, one electrode on the side of said first node and the other electrode on the side of said first terminal; one or a plurality of second field-effect transistors connected in one stage or in a plurality of stages between a second node connected to said common terminal and said second terminal, and each having a gate electrode receiving a second control voltage complementary to said first control voltage, one electrode on the side of said second node and the other electrode on the side of said second terminal; and a switching circuit for applying a given pull-up voltage to one of said first and second nodes that is connected to a field-effect transistor in an OFF state and isolating from said pull-up voltage one of said first and second nodes that is connected to a field-effect transistor in an ON state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A switch circuit device that complementarily switches a path between a common terminal and a first terminal and a path between said common terminal and a second terminal to an ON state and an OFF state, comprising:
-
a plurality of first field-effect transistors connected in a plurality of stages between said common terminal and said first terminal, and each having a gate electrode receiving a first control voltage, one electrode on the side of said common terminal, and the other electrode on the side of said first terminal; a plurality of second field-effect transistors connected in a plurality of stages between said common terminal and said second terminal, and each having a gate electrode receiving a second control voltage complementary to said first control voltage, one electrode on the side of said common terminal, and the other electrode on the side of said second terminal; a plurality of first resistances each connected between said one electrode and said other electrode of a corresponding one of said plurality of first field-effect transistors; and a plurality of second resistances each connected between said one electrode and said other electrode of a corresponding one of said plurality of second field-effect transistors. - View Dependent Claims (16, 17)
-
Specification