The ADN2830 is a closed-loop controller from Analog Devices for the average optical power of continuous wave laser diodes in fiber optic communications.
The ADN2830 from Analog Devices provides closed‑loop control of the average optical power of a continuous‑wave laser diode. It monitors the back‑facet photodiode current and adjusts the laser bias current (IBIAS) to keep output power constant. The device includes programmable FAIL and DEGRADE alarms and supports 5 V operation over a –40 °C to +85 °C temperature range.
The datasheet details specifications, absolute maximum ratings, pin configuration, power consumption, alarm interfaces, and mode operation for parallel current‑boosting. It also includes ordering information for the 32‑lead LFCSP package and evaluation board.
| Laser Bias Output Current (IBIAS) | 4–200 mA |
|---|---|
| Compliance Voltage | 1.2 V |
| Input Voltage | 1.6 V |
| Power Set Input Capacitance | 80 pF |
| Alarm Set Allowable Resistance Range | 1.2–13 kΩ |
| Logic Input VIH | 2.4 V |
| Logic Input VIL | 0.8 V |
| Alarm Output VOH | 2.4 V |
| Alarm Output VOL | 0.4 V |
| Supply Current ICC | 225 mA |
| Operating Temperature Range | –40 °C to +85 °C |
The device operates from –40 °C to +85 °C.
The bias current is set via the IBIAS pin and can be adjusted between 4 mA and 200 mA.
It provides two active‑high alarms: FAIL and DEGRADE.
It is supplied in a 32‑lead LFCSP (Lead Frame Chip Scale Package).