| 摘要 |
A device for ESD protection of a high frequency circuit ( 1 ) of a semiconductor device comprises first ( 3 ) and second ( 4 ) p-type and first ( 6 ) and second ( 5 ) n-type JFET's, wherein the first p-type JFET ( 3 ) is connected with its gate to a high voltage source, its source to an input/output pad ( 2 ) of the semiconductor device, and its drain to the source of the first n-type JFET ( 6 ), the second p-type JFET ( 4 ) is connected with its gate to the high voltage source, its source to the drain of the second n-type JFET ( 5 ), and its drain to an input/output terminal of the circuit ( 1 ), the first n-type JFET transistor ( 6 ) is connected with its gate to ground (GND), and its drain to the input/output terminal, and the second n-type JFET transistor ( 5 ) is connected with its gate to ground (GND), and its source to the input/output pad ( 2 ).
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