Amplification systems and methods with distortion reductions

摘要

System and method for integrating an input signal to generate an output signal. The system includes a first integrator configured to receive the input signal and generate an integrated signal based on at least information associated with the input signal, a second integrator configured to receive the integrated signal and generate the output signal based on at least information associated with the integrated signal, and a compensation capacitor coupled to the first integrator and the second integrator. The first integrator includes a first integration capacitor and a first operational amplifier including a first input terminal and a first output terminal, the first integration capacitor being coupled between the first input terminal and the first output terminal. The second integrator includes a second integration capacitor and a second operational amplifier including a second input terminal and a second output terminal.

主权项

1. A system for integrating an input signal to generate an output signal, the system comprising:
a first integrator configured to receive an input signal and generate an integrated signal based on at least information associated with the input signal; a second integrator configured to receive the integrated signal and generate an output signal based on at least information associated with the integrated signal; a compensation capacitor coupled to the first integrator and the second integrator; a switch coupled to the compensation capacitor and configured to receive a control signal associated with the output signal; a first resistor coupled to the switch; a signal generator configured to receive a supply voltage and generate a first signal associated with a first amplitude, the first amplitude being proportional to a magnitude of the supply voltage; a comparator configured to receive the output signal and the first signal and generate a comparison signal based on at least information associated with the output signal and the first signal; a driver component configured to receive the comparison signal and the supply voltage and generate a second signal based on at least information associated with the comparison signal and the supply voltage; a first comparator configured to receive the output signal and a first reference signal and generate a first comparison signal; and a second comparator configured to receive the output signal and a second reference signal and generate a second comparison signal; wherein:
the first integrator includes a first integration capacitor and a first operational amplifier including a first input terminal and a first output terminal, the first integration capacitor being coupled between the first input terminal and the first output terminal;the second integrator includes a second integration capacitor and a second operational amplifier including a second input terminal and a second output terminal, the second integration capacitor being coupled between the second input terminal and the second output terminal; andthe compensation capacitor includes a first capacitor terminal and a second capacitor terminal, the first capacitor terminal being connected directly to the first output terminal of the first operational amplifier, the second capacitor terminal being connected directly to the second input terminal of the second operational amplifier; wherein:
the switch is further coupled to the second input terminal of the second operational amplifier;the first resistor is further coupled to the second output terminal of the second operational amplifier;the switch is further configured to be open if the output signal satisfies one or more first predetermined conditions and to be closed if the output signal satisfies one or more second predetermined conditions; andthe switch is further configured to be open if the output signal is within a predetermined range in magnitude and to be closed if the output signal is outside the predetermined range; wherein the predetermined range is associated with the first reference signal and the second reference signal.