2.5G TIA for APD

Product Overview
The HiLight HLR2G50 is a high sensitivity transimpedance amplifier (TIA) with automatic gain control (AGC) manufactured in a pure CMOS process. The AGC enables over 29 dB of dynamic operating range, resulting in a high performance TIA suitable for fiber optic applications such as GPON and OC-48 SONET.
The HLR2G50 is pad compatible with all popular 2.5Gbps TIAs whilst offering superior performance and additional features. The HLR2G50 can be used in new applications or as a drop-in replacement for existing TIAs without major re-design effort.
Featuring photodiode monitor and monitor invert functions the HLR2G50 offers the most flexible, high performance receiver solution for 2.5 Gbps applications available.

Main Features
 APD: Typical -34 dBm sensitivity at 2.5 Gbps when used with typical APD (CPD = 0.42 pF, BER = 10-10)
 PIN: Typical -28 dBm sensitivity, 0 dBm overload at 2.5 Gbps when used with 0.9 A/W PIN (CPD = 0.42 pF, BER = 10-10)
 Typical transimpedance: 12 kΩ
 No internal ROSA/BOSA VDD supply decoupling capacitor required for typical operation
 Single +3.3 V supply voltage and typical 21.5 mA supply current
 Internal regulated photodiode bias
 Photodiode Receiver Signal Strength Indication (RSSI) monitor output, with selectable Sink or Source current modes
 Selectable anode or cathode photodiode current monitoring function

Applications
 GPON, OC-48, 2xFC
 APD Long reach receivers
 SFF, SFP Transceivers