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US 12,002,822 B2Granted
Metal-oxide-semiconductor capacitor based passive amplifier
AssigneeSemiconductor Components Industries, LLC
InventorManuel H. Innocent
Life of this patent
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Abstract
A passive amplifier is provided that includes an input sampling switch, a sampling capacitance, and metal-oxide-semiconductor capacitor devices. An input signal may be sampled onto the sampling capacitance by turning on the input sampling switch while the metal-oxide-semiconductor capacitors are activated. After the sampling phase, the metal-oxide-semiconductor capacitors are deactivated to provide a voltage gain. The voltage gain can be conditionally applied depending on the signal level of the sampled input.
Claims20
An image sensor, comprising:
- an image sensor pixel;
- a column line configured to receive a signal from the image sensor pixel;
- and
- a passive amplifier circuit comprising:
- an input port configured to receive the signal from the column line;
- an output port;
- a sampling switch having a first terminal coupled to the input port and having a second terminal coupled to the output port;
- and
- a metal-oxide-semiconductor capacitor having a gate terminal configured to receive a control signal and having source-drain terminals coupled to the output port.
6 more elements
An amplifier, comprising:
- an input port;
- an output port;
- a sampling switch having a first terminal coupled to the input port and having a second terminal coupled to the output port;
- and
- a metal-oxide-semiconductor capacitor having source-drain terminals coupled to the output port and having a gate terminal configured to receive a control signal.
2 more elements
Dependencies are inferred from the claim text.