Semtech is sampling additions to its Tri-Edge clock and data recovery (CDR) transmitter ICs for data centre long reach (LR) optical links. The GN2555 is a quad channel PAM4 CDR with integrated directly modulated laser (DML) drivers. The GN2556 is a quad channel PAM4 CDR with integrated externally modulated laser (EML) drivers. The GN2555 and ...

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