Sampling circuit with a hierarchical time step generator
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United States of America Patent
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Feb 27, 2024
Grant Date -
Sep 7, 2023
app pub date -
Mar 1, 2022
filing date -
Mar 1, 2022
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Abstract
A hierarchical time step generator circuit is configured to be used for a time-based analog-to-digital converter. The hierarchical time step generator is configured to generate multiphase clock signals in response to receiving a reference clock signal. The time-based analog-to-digital converter is configured to be controlled to digitize the input signal by the multiphase clock signals. The hierarchical time step generator includes a first level time step generator configured to generate the a set of first level multiphase signals in response to receiving the reference clock signal a phase interpolator circuit configured as second level to generate second level clock signals between each of the first level clock signals and a third level configured to generate the third set of multiphase clock signals using a set of time staggered multi-phase phase locked loops synchronized to each of the second level clock signals.
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