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US 9,847,760 B1Granted
Switched capacitor gain stage
AssigneeTexas Instruments Incorporated
InventorsShagun Dusad, Rajendrakumar Joish
Life of this patent
Estimating the term…
Abstract
The disclosure provides a circuit. The circuit includes a gain stage block. The gain stage block is coupled to an input voltage through a first switch. A first capacitor is coupled between the first switch and a ground terminal. A second capacitor is coupled between the first switch and a second switch. A third switch is coupled between the second capacitor and a fixed terminal of the gain stage block.
Claims20
A circuit comprising:
- a gain stage block coupled to an input voltage through a first switch;
- a first capacitor coupled between the first switch and a ground terminal;
- a second capacitor coupled between the first switch and a second switch;
- and
- a third switch coupled between the second capacitor and a fixed terminal of the gain stage block.
2 more elements
A method comprising:
- closing a first switch and a second switch;
- opening a third switch;
- charging a first capacitor and a second capacitor to an input voltage, the first capacitor and the second capacitor are coupled to a gain stage block;
- opening the first switch and the second switch;
- closing the third switch;
- and
- charging the first capacitor to a third voltage, wherein a voltage generated at a fixed terminal of the gain stage block is proportional to the third voltage.
4 more elements
A transceiver comprising:
- a gain stage configured to receive an input voltage;
- and
- an analog to digital converter (ADC) coupled to the gain stage, and configured to generate a digital output signal, wherein at least one of the gain stage and the ADC comprises a switched capacitor gain stage circuit, the switched capacitor gain stage circuit comprising:
- a gain stage block coupled to the input voltage through a first switch;
- a first capacitor coupled between the first switch and a ground terminal;
- a second capacitor coupled between the first switch and a second switch;
- and
- a third switch coupled between the second capacitor and a fixed terminal of the gain stage block.
5 more elements
Dependencies are inferred from the claim text.