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US 12,146,999 B2Granted
Amplifier for dark noise compensation
AssigneeShenzhen Xpectvision Technology Co., Ltd.
InventorsHuabin Cheng, Zhigang Wang, Xin Li
Life of this patent
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Abstract
Disclosed herein is an amplifier, comprising: an op-amp configured to receive at an input thereof a first electric current; a first MOS capacitor connected to the input and an output of the op-amp.
Claims16
An amplifier, comprising:
- an op-amp configured to receive at an input thereof a first electric current;
- a first MOS capacitor connected to the input and an output of the op-amp;
- an adjustable current source feeding a second electric current to the input;
- wherein the adjustable current source is adjustable by an electric signal;
- wherein the adjustable current source comprises a second MOS capacitor;
- wherein the adjustable current source comprises a third MOS capacitor in parallel to the second MOS capacitor;
- wherein a gate electrode of the second MOS capacitor is connected to the input and a bulk contact of the third MOS capacitor is connected to the input;
- wherein a gate electrode of the third MOS capacitor is connected to the input of the op-amp and a bulk contact of the third MOS capacitor is connected to the electric signal.
5 more elements
Dependencies are inferred from the claim text.