Clock synchronizer with offset prevention function against variation of output potential of loop filter
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United States of America Patent
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Nov 2, 2004
Grant Date -
N/A
app pub date -
Jan 14, 2002
filing date -
Jun 5, 2000
priority date (Note) -
Expired
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Abstract
A change pump circuit included in a clock synchronizer is capable of preventing occurrence of an offset even though an output potential of a loop filter is varied, and includes a control circuit controlling a gate potential of a transistor such that predetermined constant current flows through the transistor connected between the line of a power-supply potential and an output node of the loop filter by a switching circuit, based on the output potential of the loop filter.
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