Systems and methods for ring-oscillator based operational amplifiers for scaled CMOS technologies
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United States of America Patent
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Sep 11, 2018
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Jul 20, 2017
app pub date -
Jan 17, 2017
filing date -
Jan 15, 2016
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Abstract
An area efficient amplifier that amplifies a continuous-time continuous-amplitude signal and converts it to a discrete-time discrete-amplitude signal. The amplifier includes a first oscillator having an input and a plurality of N outputs and a second oscillator having an input and N outputs. The amplifier includes N phase detectors, each phase detector has a first input, a second input, a first output, and a second output, where each first input of each phase detector is coupled to respective one of the N outputs of the first oscillator, where each second input of each phase detector is coupled to respective one of the N outputs of the second oscillator. The amplifier includes N quantizers, each quantizer has a data input, a clock input, and an output, where each data input of each quantizer is coupled to respective one first output or one second output of the N phase detectors.
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