四通路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沉职能。

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.