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US 2014/0152375 A1Published application
Multiplexer and dynamic bias switch thereof
AssigneeHimax Technologies Limited
InventorWei-Kai Tseng
Life of this patent
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Abstract
A multiplexer and a dynamic bias switch thereof are provided. The dynamic bias switch includes a switch transistor and a dynamic bulk bias (DBB) unit. A first terminal and a second terminal of the switch transistor are respectively coupled to a first terminal and a second terminal of the dynamic bias switch. A bulk of the switch transistor is coupled to the DBB unit. The DBB unit selectively couples the first terminal or the second terminal of the switch transistor to the bulk of the switch transistor.
Claims19
A multiplexer, comprising:
- a first switch, having a first terminal and a second terminal respectively coupled to a first port and a second port of the multiplexer;
- a second switch, having a first terminal and a second terminal respectively coupled to a third port and the second port of the multiplexer;
- a third switch, having a first terminal and a second terminal respectively coupled to the first port and a fourth port of the multiplexer;
- and
- a fourth switch, having a first terminal and a second terminal respectively coupled to the third port and the fourth port of the multiplexer;
- wherein at least one of the first switch, the second switch, the third switch and the fourth switch is a dynamic bias switch, the dynamic bias switch comprises a first switch transistor and a dynamic bulk bias (DBB) unit, a first terminal and a second terminal of the first switch transistor are respectively coupled to the first terminal and the second terminal of the dynamic bias switch, a bulk of the first switch transistor is coupled to the DBB unit, and the DBB unit selectively couples the first terminal or the second terminal of the first switch transistor to the bulk of the first switch transistor.
3 more elements
A dynamic bias switch, comprising:
- a first switch transistor, having a first terminal and a second terminal respectively coupled to a first terminal and a second terminal of the dynamic bias switch;
- and
- a DBB unit, coupled to a bulk of the first switch transistor, and selectively coupling the first terminal or the second terminal of the first switch transistor to the bulk of the first switch transistor.
Dependencies are inferred from the claim text.