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US 2022/0029593 A1Published application
Chopper-stabilized programmable gain amplifier
AssigneeTexas Instruments Incorporated
InventorShang-Yuan CHUANG
Life of this patent
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Abstract
A circuit including an amplifier having an input and an output. The circuit also includes a current-to-voltage amplifier having an input. The circuit further includes a current mirror coupled between the output of the amplifier and the input of the current-to-voltage amplifier. The current mirror is configured to chop current flowing through the first current mirror.
Claims9
A circuit, comprising:
- a first plurality of metal oxide semiconductor field effect transistors, each transistor of the first plurality having a gate, a drain, and a source;
- a second plurality of metal oxide semiconductor field effect transistors, each transistor of the second plurality having a gate, a drain, and a source;
- the sources of each transistor of the first and second pluralities coupled together;
- the drains of each transistor of the first plurality coupled together at a first node;
- the drains of each transistor of the first plurality coupled together at a second node, the first node not coupled to the second node;
- the gates of each transistor of the first and second pluralities is configured to receive separate control signals.
3 more elements
A circuit, comprising:
- an amplifier having an input and an output;
- a current-to-voltage amplifier having an input;
- and
- a current mirror coupled between the output of the amplifier and the input of the current-to-voltage amplifier, the current mirror configured to chop current flowing through the first current mirror, and the current mirror having a 1:M current mirror ratio, wherein M is greater than 1.
1 more element
Dependencies are inferred from the claim text.