ADN2870 is a 3.3V dual-loop laser diode driver with a range of 50Mbps to 3.3Gbps operation. It features multirate operation, dual-loop control of average power and extinction ratio, typical rise/fall time of 60ps, and more.
The ADN2870 is a 3.3 V dual-loop laser diode driver designed for advanced SFP and SFF modules using SFF-8472 digital diagnostics. It features dual-loop control of average power and extinction ratio to automatically compensate for variations in laser characteristics over temperature and aging. The device supports single-rate operation from 50 Mbps to 3.3 Gbps or multirate operation from 155 Mbps to 3.3 Gbps.
| Operating Temperature Range | -40°C to +85°C |
|---|---|
| Bias Current Range | 2 mA to 100 mA |
| Modulation Current Range | 5 mA to 90 mA |
| Typical Rise/Fall Time | 60 ps |
| Package Type | 4 mm x 4 mm LFCSP |
The device supports single-rate operation from 50 Mbps to 3.3 Gbps or multirate operation from 155 Mbps to 3.3 Gbps.
Yes, the device includes a laser fail alarm and automatic laser shutdown (ALS) feature.
Average power can be set with a voltage provided by a microcontroller DAC or by a trimmable resistor.