Trimming circuit, power supply including trimming circuit, and trimming method
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United States of America Patent
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Sep 29, 2015
Grant Date -
Jan 30, 2014
app pub date -
Jul 23, 2013
filing date -
Jul 27, 2012
priority date (Note) -
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Abstract
A trimming circuit, installed in a semiconductor integrated circuit that has multiple different target values, the trimming circuit to adjusts circuit characteristics of the semiconductor integrated circuit to make output values of the semiconductor integrated circuit correspond to multiple desired target values and includes a setting-value table memory to store multiple setting value groups respectively containing different combinations of multiple setting values related to the multiple target values; a trimming cell circuit to store first selection information indicating one group of the multiple setting-value groups stored in the setting-value table memory; and a selector to select one group from the multiple setting-value group stored in the setting-value table memory based on the first selection information, and select one setting value from multiple setting values in the selected setting-value group based on external second selection information to output the selected setting value.
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