四通道28Gbps TIA + CDR + LA；-12dBm典型灵敏度，LOS阈值可编程；平均光电流监视；输出摆幅可编程及去加重功能
。

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.