Digital-to-time converter and calibration of digital-to-time converter
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United States of America Patent
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Mar 31, 2015
Grant Date -
Sep 18, 2014
app pub date -
Mar 15, 2013
filing date -
Mar 15, 2013
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Abstract
A digital-to-time converter (DTC) comprises a gate controller configured to generate a gate enable signal based on first and second digital values so that the gate enable signal has a first enable period and a second enable period for each pair of a first digital value and a second digital value. A gate conditionally passes a main clock signal to a gate output in response to the gate enable signal, the gate thus providing a gated signal at a gate output. A frequency divider generates a frequency divided signal as the output signal of the digital-to-time converter based on the gated signal. The DTC may be calibrated by a time-to-digital converter connected between an input for the main clock signal and an output of a delay element of the DTC.
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