Nested transimpedance amplifier
AssigneeMarvell World Trade Ltd.
InventorSehat Sutardja
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Abstract
A nested transimpedance amplifier circuit includes a first-order nested transimpedance amplifier having an input and an output. The first-order nested transimpedance amplifier is configured to be powered by a first voltage. A charge pump module is configured to receive the first voltage and a second voltage. The second voltage is different from the first voltage. The charge pump module generates a third voltage based on the first voltage and the second voltage. A first operational amplifier has an input and an output. The input of the first operational amplifier communicates with the output of the zero-order transimpedance amplifier, and the first operational amplifier is configured to be powered by the third voltage.
Claims11
A nested transimpedance amplifier circuit, comprising:
- a first-order nested transimpedance amplifier having an input and an output, the first-order nested transimpedance amplifier configured to be powered by a first voltage;
- a charge pump module configured to
- receive the first voltage and a second voltage, the second voltage being different from the first voltage, and
- generate a third voltage based on the first voltage and the second voltage;
- and
- a first operational amplifier having an input and an output,
- wherein the input of the first operational amplifier communicates with the output of the zero-order transimpedance amplifier, and the first operational amplifier is configured to be powered by the third voltage.
The device of claim 11, wherein the device comprises an optical sensor.
Dependencies are inferred from the claim text.