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In this paper, a low supply static 2:1 frequency divider based on 0.13 mum CMOS is presented. It is designed for 40-Gb/s optical communication systems. Current-mode logic (CML) is adopted because of the higher speed compared to static CMOS and the robustness against common-mode disturbances. This frequency divider is designed with output buffer to drive the external 50 Omega loads. On-chip shunt peaking...
Low supply digital blocks for OC-768/STM-256 optical communication systems such as 1:2 demultiplexer (DEMUX), 2:1 multiplexer (MUX), 2:1 frequency divider and data decision circuit in 0.13 mum CMOS are presented. All proposed blocks are based on fully differential MOS current-mode logic (CML). Multi-stage output buffers are used to drive the external 50 Omega loads. On-chip shunt peaking (SP) inductors...
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