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1. 发明授权

US5805089A Time-division data multiplexer with feedback for clock cross-over adjustment 失效
标题翻译：具有时钟交叉调整反馈的时分数据复用器
公开(公告)号：US5805089A
公开(公告)日：1998-09-08
申请号：US734691
申请日：1996-10-21
申请人： Alan S. Fiedler , Shoba Krishnan
发明人： Alan S. Fiedler , Shoba Krishnan
IPC分类号： H03M9/00
CPC分类号： H03M9/00
摘要： A time-division data multiplexer has feedback for adjusting the select clock cross-over voltage. The multiplexer includes a multi-phase clock generator having a plurality of select clock outputs with different phases, a plurality of parallel data inputs and first and second serial data outputs. A first set of gating transistors is coupled between the first data output and a common node. Each transistor in the first set is gated by a corresponding data input and at least one corresponding select clock output. A second set of gating transistors is coupled between the second data output and the common node. Each transistor in the second set is gated by a corresponding data input and at least one corresponding select clock output. A first current source is coupled to the common node. An amplifier has a first input which is coupled to the common node, a second input which is coupled to a reference voltage generator and a cross-over control output which is coupled to the plurality of select clock outputs for adjusting the cross-over voltage of the select clock outputs in response to a comparison of the voltages on the first and second amplifier inputs. A loop filter is coupled to the cross-over control output.
摘要翻译：时分数据多路复用器具有用于调整选择时钟交叉电压的反馈。多路复用器包括具有多个具有不同相位的选择时钟输出的多相时钟发生器，多个并行数据输入和第一和第二串行数据输出。第一组选通晶体管耦合在第一数据输出和公共节点之间。第一组中的每个晶体管由对应的数据输入和至少一个对应的选择时钟输出选通。第二组选通晶体管耦合在第二数据输出和公共节点之间。第二组中的每个晶体管由对应的数据输入和至少一个对应的选择时钟输出选通。第一电流源耦合到公共节点。放大器具有耦合到公共节点的第一输入端，耦合到参考电压发生器的第二输入端和耦合到多个选择时钟输出的交叉控制输出端，用于调整交叉电压所述选择时钟输出响应于所述第一和第二放大器输入端的电压的比较。环路滤波器耦合到交叉控制输出。

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