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US 8,013,668 B1Granted
Bias current compensation device and method
AssigneeMarvell International Ltd.
InventorKan Li
Life of this patent
Estimating the term…
Abstract
A compensation device that can include a bias-able device, a bias circuit that provides the bias-able device with a bias current, a signal conditioner selectively coupled to the bias-able device, and an emulator. The signal conditioner and emulator can divert current from the bias-able device in an operational and calibration mode, respectively. In calibration mode, the emulator generates a compensation current that is combined with a sense current so that the sense current equals the bias current.
Claims21
A compensation device comprising:
- a first component configured to receive a bias current during a calibration of the first component, the bias current being a sense current less a given current;
- and
- a second component configured to provide the first component with the bias current, to divert the given current from the first component, and to generate a compensation current during the calibration, the compensation current being combined with the sense current so that the sense current equals the bias current.
A compensation method, comprising:
- providing a bias current to a first component of a compensation device during a calibration of the first component, the bias current being a sense current less a given current;
- and
- providing the first component with the bias current by a second component that is configured to divert the given current from the first component, and to generate a compensation current during the calibration, the compensation current being combined with the sense current so that the sense current equals the bias current.
Dependencies are inferred from the claim text.