Invention Grant
- Patent Title: Calibrating on-chip resistors via a daisy chain scheme
- Patent Title (中): 通过菊花链方案校准片上电阻
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Application No.: US13468301Application Date: 2012-05-10
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Publication No.: US08451021B1Publication Date: 2013-05-28
- Inventor: Benjamin A. Fox , Nathaniel J. Gibbs , Andrew B. Maki , David M. Onsongo , Trevor J. Timpane
- Applicant: Benjamin A. Fox , Nathaniel J. Gibbs , Andrew B. Maki , David M. Onsongo , Trevor J. Timpane
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Edward P. Li; Robert R. Williams
- Main IPC: H03K19/003
- IPC: H03K19/003

Abstract:
A method for calibrating resistors on an integrated circuit chip via a daisy chain scheme. The method comprises the step of configuring one or more links of the daisy chain scheme, wherein each of the one or more links comprises one or more master resistors and one or more slave resistors. The method further comprises the steps of calibrating at least one on-chip reference resistor, the one or more master resistors, and the one or more slave resistors via the daisy chain scheme. The method using the daisy chain scheme enables resistance of at least one off-chip reference resistor to be duplicated to multiple distant locations while maintaining a low mismatch error.
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