Clock generator for use in a time-interleaved ADC and methods for use therewith
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United States of America Patent
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Dec 2, 2014
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app pub date -
Nov 22, 2013
filing date -
Nov 8, 2013
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Abstract
A first clock generator receives an input clock, generates a first clock signal for use in a first level of a multilevel track and hold circuit of a time-interleaved analog to digital convertor, and generates a time-leading version of the first clock signal. A plurality of second clock generators receive the input clock and generate a corresponding plurality of second clock signals for use in a second level of the multi-level track and hold circuit. The plurality of second level clock generators include an adjustable delay that delays a corresponding one of the plurality of second clock signals by a delay amount that is determined based on a delay control signal. A feedback controller generates the delay control signal based on the time-leading version of the first clock signal and further based on the corresponding one of the plurality of second clock signals.
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