ADN2871 is a 3.3V, 50 Mbps to 4.25 Gbps single-loop laser diode driver that is used in 1×/2×/4× Fibre Channel SFP/SFF modules, Multirate OC3 to OC48-FEC SFP/SFF modules, LX-4 modules, DWDM/CWDM SFP modules, 1GE SFP/SFF transceiver modules, VCSEL, DFB and FP transmitters.
The ADN2871 is a 3.3 V laser diode driver designed for SFP and SFF optical modules, supporting data rates from 50 Mbps to 4.25 Gbps. It offers both voltage‑setpoint and resistor‑setpoint control modes and includes bias and modulation current monitoring, automatic laser shutdown, and alarm outputs.
Key features include a bias current range of 2 mA‑100 mA, modulation current range of 5 mA‑90 mA, rise/fall times as low as 60 ps (single‑ended) and 47 ps (differential), and operation over an industrial temperature range of –40 °C to +85 °C. The device is supplied in a 4 mm × 4 mm LFCSP package and is pin‑compatible with the ADN2870.
| Laser Bias Current (IBIAS) range | 2 mA to 100 mA |
|---|---|
| Modulation Current (IMOD) range | 5 mA to 90 mA |
| Rise Time (Single‑Ended Output) | 60 ps typical |
| Operating Temperature Range | -40 °C to +85 °C |
| Supply Voltage (Vee) | 3.0 V to 3.6 V |
| Package | 4 mm × 4 mm LFCSP |
The bias current can be set from 2 mA to 100 mA.
It operates from 3.0 V to 3.6 V.
The device is rated for –40 °C to +85 °C.
It is offered in a 4 mm × 4 mm Lead Frame Chip Scale Package (LFCSP).