Inphi Corp. has signed a definitive agreement to acquire ClariPhy Communications Inc. for $275 million in cash. ClariPhy provides ultra-high speed digital signal processing (DSP) systems-on-chip (SoC) for multi-terabit data, long haul and metro networks. This DSP capability complements Inphi’s fiber optic components, which will enable Inphi to offer more of the block diagram for optical networks.