CALIBRATION CIRCUIT AND SEMICONDUCTOR DEVICE INCLUDING THE SAME

A calibration circuit includes a first, second and third pull-up units each connected to a first power supply node, and first and second pull-down units each connected to a second power supply node. A first code generator is configured to generate a first code by comparing a voltage of a pad at whic...

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Bibliographic Details
Main Authors KWON, Daehyun, KWON, Hyejung, BAEK, Jaehyeok, AN, Donggun, LEE, Daewoong
Format Patent
LanguageEnglish
Published 15.06.2023
Subjects
INFORMATION STORAGE
PHYSICS
STATIC STORES
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Summary:A calibration circuit includes a first, second and third pull-up units each connected to a first power supply node, and first and second pull-down units each connected to a second power supply node. A first code generator is configured to generate a first code by comparing a voltage of a pad at which the first pull-up unit is connected to an external resistor with a reference voltage, and a second code generator is configured to generate a second code by comparing a voltage of a first intermediate node with the reference voltage and output the second code to the first and second pull-down units. A third code generator is configured to generate a third code by comparing a voltage of a second intermediate node between the second pull-down unit and the third pull-up unit with the reference voltage.
Bibliography:Application Number: US202217903578