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US 2025/0047279 A1Published application
Multiplexer with highly linear analog switch
AssigneeSTMicroelectronics International N.V.
InventorsVaibhav GARG, Abhishek JAIN, Anand KUMAR
Life of this patent
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Abstract
A multiplexer includes an input, an output, and a main switch configured to pass a signal from the input to the output. The multiplexer includes two bootstrap circuits that collectively maintain a constant voltage between terminals of the main switch during alternating phases.
Claims20
A method, comprising:
- passing a signal from an input terminal of a multiplexer through a main transistor of the multiplexer to an output terminal of the multiplexer;
- coupling a first bootstrap capacitor between a gate terminal and a source terminal of the main transistor during a first phase;
- and
- coupling a second bootstrap capacitor between the gate terminal and the source terminal of the main transistor during a second phase alternating with the first phase.
1 more element
An integrated circuit, comprising:
- a multiplexer, including:
- an input;
- an output;
- a main transistor having a source terminal coupled to the input, a drain terminal coupled to the output, and a gate terminal;
- a first bootstrap circuit coupled to the input, the first bootstrap circuit including:
- a first pair of transistors;
- a first bootstrap capacitor;
- and
- a second pair of transistors, the first bootstrap capacitor coupled between the first pair of transistors and the second pair of transistors;
- and
- a second bootstrap circuit coupled to the input, the second bootstrap circuit including:
- a third pair of transistors;
- a second bootstrap capacitor;
- and
- a fourth pair of transistors, the second bootstrap capacitor coupled between the third pair of transistors and the fourth pair of transistors.
12 more elements
An integrated circuit, comprising:
- a multiplexer, including:
- an input;
- an output;
- a main transistor having a source terminal coupled to the input, a drain terminal coupled to the output, and a gate terminal;
- a first bootstrap circuit coupled to the input;
- and
- a second bootstrap circuit coupled to the input.
4 more elements
Dependencies are inferred from the claim text.