Invention Grant
- Patent Title: Impedance control circuit and integrated circuit chip including the same
- Patent Title (中): 阻抗控制电路和集成电路芯片包括相同
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Application No.: US13334022Application Date: 2011-12-21
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Publication No.: US08476923B2Publication Date: 2013-07-02
- Inventor: Dong-Wook Jang , Yong-Mi Kim
- Applicant: Dong-Wook Jang , Yong-Mi Kim
- Applicant Address: KR Gyeonggi-do
- Assignee: Hynix Semiconductor Inc.
- Current Assignee: Hynix Semiconductor Inc.
- Current Assignee Address: KR Gyeonggi-do
- Agency: IP & T Group LLP
- Priority: KR10-2011-0017666 20110228
- Main IPC: H03K17/16
- IPC: H03K17/16
Abstract:
A circuit, including a first impedance unit having an impedance value based on a first impedance code and configured to drive a first node coupled with a resistor with a first voltage, a first code generation unit configured to generate the first impedance code so that an impedance value of the first impedance unit and an impedance value of the resistor are at a ratio of X:Y, dummy impedance units that receive the first impedance code and drive a second node with the first voltage, a second impedance unit having an impedance value based on a second impedance code and configured to drive the second node with a second voltage, and a second code generation unit configured to generate the second impedance code so that an overall impedance value of the dummy impedance units and an impedance value of the second impedance unit are at a ratio of X:Y.
Public/Granted literature
- US20120217991A1 IMPEDANCE CONTROL CIRCUIT AND INTEGRATED CIRCUIT CHIP INCLUDING THE SAME Public/Granted day:2012-08-30
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