HIGH RESOLUTION OUTPUT DRIVER

专利名称：HIGH RESOLUTION OUTPUT DRIVER发明人：Amir Amirkhany,Chaofeng Huang,Kambiz

Kaviani,Wayne D. Dettloof,Kun-Yung Chang

申请号：US13391383申请日：20100914

公开号：US20120147944A1公开日：20120614

专利附图：

摘要：High resolution output drivers having a relatively small number of sub-driverbranches or slices each having nominal impedances substantially larger than a

quantization step and that incrementally differ from one another by an impedance step

substantially smaller than a quantization step. In one implementation, such

“differential” or “non-uniform” sub-driver slices implement respective elements of ann choose k equalizer, with each such differential sub-driver slice being implemented by auniform-element impedance calibration DAC. In another implementation, each

component of a uniform-slice equalizer is implemented by a differential-slice impedancecalibration DAC, and in yet another implementation, each component of a differential-slice equalizer is implemented by a differential-slice impedance calibration DAC. In anadditional set of implementations, equalization and impedance calibration functions areimplemented bilaterally in respective parallel sets of driver branches, rather than in thenested “DAC within a DAC” arrangement of the hierarchical implementations. Throughsuch bilateral arrangement, multiplication of the equalizer and calibrator quantizations isavoided, thereby lowering the total number of sub-driver slices required to meet thespecified ranges and resolutions.

申请人：Amir Amirkhany,Chaofeng Huang,Kambiz Kaviani,Wayne D. Dettloof,Kun-YungChang

地址：Sunnyvale CA US,San Jose CA US,San Francisco CA US,Cary NC US,Los Altos CAUS

国籍：US,US,US,US,US

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