Invention Grant
- Patent Title: Voltage mode transmitter equalizer
- Patent Title (中): 电压模式变送器均衡器
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Application No.: US13260549Application Date: 2010-03-26
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Publication No.: US08633733B2Publication Date: 2014-01-21
- Inventor: Wayne D. Dettloff , John W. Poulton , John M. Wilson
- Applicant: Wayne D. Dettloff , John W. Poulton , John M. Wilson
- Applicant Address: US CA Sunnyvale
- Assignee: Rambus Inc.
- Current Assignee: Rambus Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Hamilton, Brook, Smith & Reynolds, P.C.
- International Application: PCT/US2010/028871 WO 20100326
- International Announcement: WO2010/111619 WO 20100930
- Main IPC: H03K19/094
- IPC: H03K19/094

Abstract:
A voltage mode transmitter equalizer has high efficiencies, yet consumes substantially constant supply current from the power supply and provides constant back-match impedance. The voltage mode transmitter equalizer is configured such that the output voltage of the signal to be output on a pair of transmission lines can be controlled according to the input data, but its return impedance is substantially matched to the differential impedance of the transmission lines and it draws substantially constant supply current from the power supply regardless of the output voltage of the signal. Further, an equalizer for a voltage-mode transmitter provides fine-granularity equalization settings by employing a variable pull-up conductance and a variable pull-down conductance. Conductance is varied by selectively enabling a plurality of conductance channels, at least some of which have resistance values that are distinct from one another.
Public/Granted literature
- US20120025800A1 VOLTAGE MODE TRANSMITTER EQUALIZER Public/Granted day:2012-02-02
Information query
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