Impedance calibration circuit

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United States of America Patent

PATENT NO 10003323
SERIAL NO

15697076

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Abstract

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An impedance calibration circuit is disclosed, which relates to a technology for improving precision of pad resistance. The impedance calibration circuit includes: a first On Die Termination (ODT) circuit selected by a first selection signal, configured to tune its own resistance using a first code signal, and output a first resistance value to an output terminal; and a second ODT circuit selected by a second selection signal, configured to tune its own resistance using a second code signal, and output a second resistance value to the output terminal.

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Patent Owner(s)

  • SK HYNIX INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Baek, Seung Geun Seoul, KR 14 24
Kim, Jae Il Icheon-si, KR 158 648

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