A 10-Gb/s trans-impedance amplifier (TIA) with insensitive characteristics to photodiode junction capacitance is demonstrated in 0.13-µm CMOS technology. The TIA has LC-ladder input configuration which allows large bandwidth even with large photodiode capacitance (C_PD). In addition, the circuit bandwidth is enhanced with capacitive degeneration and shunt peaking techniques. With C_PD of 1.5-pF, our TIA has about two times larger bandwidth compared with conventional TIAs.