Current modulation circuit

Various embodiments of the invention relates to a current modulation circuit. A modulated digital input signal is passed through a conditioning circuit to generate a first input signal. An error amplifier circuit receives the first input signal and a second input signal, and controls the operation o...

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Bibliographic Details
Main Authors ALESSANDRO GASPARINI, ANTHONY JUNIOR CASILLAN, NAREN K SAHOO, TOM YOUSSEF, YAMU HU
Format Patent
LanguageEnglish
Published 25.11.2015
Subjects
CONTROLLING
PHYSICS
REGULATING
SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
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Summary:Various embodiments of the invention relates to a current modulation circuit. A modulated digital input signal is passed through a conditioning circuit to generate a first input signal. An error amplifier circuit receives the first input signal and a second input signal, and controls the operation of a MOS transistor to generate an output signal that is current modulated. The output signal is sensed to generate a feedback signal. A switching circuit selectively applies the feedback signal as the second input signal in response to a transition of the modulated digital input signal from a first logic state to a second logic state. The switching circuit alternatively selectively applies a fixed reference signal as the second input signal to the error amplifier in response to a transition of the modulated digital input signal from the second logic state to the first logic state.
Bibliography:Application Number: CN20151224931