Amplifier bandwidth calibration of continuous time circuit
AssigneeMediatek Inc.
InventorsHung-Yi Hsieh, Jui-Yuan Tsai
Life of this patent
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Abstract
The present invention provides a continuous time circuit including an amplifier and a RC calibration circuit. In the operations of the continuous time circuit, the amplifier is configured to amplify an input signal to generate an output signal, and the RC calibration circuit is configured to adjust a capacitance of a compensation capacitor of the amplifier according to a RC product measurement result.
Claims19
A continuous time circuit, comprising:
- an amplifier, for amplifying an input signal to generate an output signal, wherein the amplifier comprises a compensation capacitor connected to at least one of amplifying stages within the amplifier;
- and
- a resistance-capacitance (RC) calibration circuit, for receiving a resistance-capacitance (RC) product measurement result, wherein the RC product measurement result indicates if an RC product is less than or greater than a desired value;
- and the RC calibration circuit further refers to the RC production measurement result to generate a control signal to adjust a capacitance of a compensation capacitor of the amplifier.
A method for calibrating a continuous time circuit, wherein the continuous time circuit comprises an amplifier, the amplifier comprises a compensation capacitor connected to at least one of amplifying stages within the amplifier, and the method comprises:
- obtaining a resistance-capacitance (RC) product measurement result, wherein the RC product measurement result indicates if an RC product is less than or greater than a desired value;
- referring to the RC production measurement result to generate a control signal to adjust a capacitance of a compensation capacitor of the amplifier.
Dependencies are inferred from the claim text.