四通道28Gbps TIA + CDR + LA；；；-12dBm典型活络度，LOS阈值可编程；；；均匀光电流监督；；；输出摆幅可编程及去加重职能。

4 Channel 28Gbps TIA + CDR + LA; -12dBm typical sensitivity.High-sensitivity limiting amplifier with programmable LOS threshold.Average photodiode current monitor,

Programmable output swing and de-emphasis.