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US 2018/0007294 A1Published application
Sample-and-hold circuit with rts noise reduction by periodic mode switching
AssigneeSony Corporation
InventorsNoam Eshel, Golan Zeituni
Life of this patent
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Abstract
A sample-and-hold-circuit includes an amplifier transistor, a resistor connected between a source terminal of the amplifier and a voltage, a first switch connected in parallel with the resistor, and a second switch connected between a gate terminal of the amplifier transistor and the voltage. When the first switch is closed and the second switch is open, the amplifier transistor is in an inversion mode; and when the first switch is open and the second switch is closed, the amplifier transistor is in an accumulation mode.
Claims20
A sample-and-hold circuit, comprising:
- an amplifier transistor;
- a resistor connected between a source terminal of the amplifier transistor and a predetermined voltage;
- a first switch connected in parallel with the resistor;
- and
- a second switch connected between a gate terminal of the amplifier transistor and the predetermined voltage.
2 more elements
An image sensor, comprising:
- a pixel circuit configured to configured to convert incident light into an analog signal;
- and
- a sample-and-hold circuit configured to receive the analog signal, the sample-and-hold-circuit including:
- an amplifier transistor;
- a resistor connected between a source terminal of the amplifier transistor and a predetermined voltage;
- a first switch connected in parallel with the resistor;
- and
- a second switch connected between a gate terminal of the amplifier transistor and the predetermined voltage.
5 more elements
Dependencies are inferred from the claim text.