PAM-4 receiver using pattern-based clock and data recovery circuitry
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United States of America
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Dec 31, 2024
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Dec 28, 2023
app pub date -
Dec 14, 2022
filing date -
Dec 14, 2022
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Abstract
Disclosed in a PAM-4 receiver using pattern-based clock and data recovery circuitry, which includes an analog front end that receives an external signal and recovers channel loss to output a refined PAM-4 signal, a comparison unit that receives the PAM-4 signal and compares the PAM-4 signal with a reference voltage to generate a recovery signal, and a recovery unit that receives the recovery signal and recovers data and a clock. The analog front end includes an equalizer that matches amplitudes of all frequency components of the external signal and an amplifier that amplifies an output signal of the equalizer.
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