ADN2848 is a 3.3V dual-loop 50Mbps to 1.25Gbps laser diode driver produced by Analog Devices. It supports SONET OC-1/3/12/24, SDH STM-0/1/4, Fibre Channel and Gigabit Ethernet applications.
The ADN2848 is a 3.3 V dual‑loop laser diode driver supporting data rates from 50 Mbps to 1.25 Gbps. It offers closed‑loop control of laser power and extinction ratio, programmable alarms for laser fail and degradation, and an automatic laser shutdown feature.
The handbook includes a feature list, detailed specifications, absolute maximum ratings, pin configuration, theory of operation, loop bandwidth selection, alarm descriptions, data and clock input guidelines, outline dimensions, and ordering information for the 32‑lead LFCSP_VQ package.
| Laser Bias Current | 2 mA to 100 mA |
|---|---|
| Modulation Current | 5 mA to 80 mA |
| Supply Voltage (Vee) | 3.0 V to 3.6 V |
| Operating Temperature Range | -40 °C to +85 °C |
| Package | 32‑Lead LFCSP_VQ |
| Maximum Data Rate | 50 Mbps to 1.25 Gbps |
The device operates from 3.0 V to 3.6 V supply voltage.
It provides laser fail, laser degrade, and automatic laser shutdown (ALS) alarms.
The driver supports data rates from 50 Mbps up to 1.25 Gbps.
Pin 20, labeled ALS, is the automatic laser shutdown pin.