12.5 Gbps 1:16 DEMUXIC with high speed synchronizing circuits

A 12.5 Gbps 1:16 demultiplexer (DEMUX) integrated circuit is presented for multi-channel high-speed data transmission. A novel high-speed synchronizing technique is proposed and integrated in this DEMUX chip. Compared with conventional synchronizing techniques, the proposed method largely simplifies the system configuration. The experimental result demonstrates that the proposed circuit is effective in two-channel synchronization under a clock frequency of 12.5 GHz. The circuit is realized using 1 μm GaAs heterojunction bipolar transistor technology with die area of 2.3 × 2.3 mm2. (semiconductor integrated circuits)