FAGD1657132BA Laser Diode Driver, 2.5 Gbps, 70 mA modulation, 50 mA bias, -4.7V ~ -5.5V supply, 32-LQFP Exposed Pad, -40°C to 85°C.
| Parameter | Value |
|---|---|
| Type | Laser Diode Driver |
| Mounting type | Surface Mount |
| Voltage | -4.7V ~ 5V, -4.7V ~ -5.5V |
| Current - bias | 50 mA |
| Current - supply | 75 mA |
| Current - modulation | 70mA |
| Operating temperature | -40°C ~ 85°C |
| Package | Bulk |
| Data rate | 2.5Gbps |
| Case | 32-LQFP Exposed Pad |
| Number of channels | 1 |
This driver runs on a dual supply: a positive rail from -4.7 V to 5 V and a negative rail from -4.7 V to -5.5 V. The negative rail is the laser cathode supply.
The 70 mA modulation current sets the optical extinction ratio and eye amplitude. The 50 mA bias current keeps the laser above threshold.
No. The supply range requires a negative rail (-4.7 V to -5.5 V) for the laser bias and a positive rail from -4.7 V to 5 V. A 3.3 V logic supply may be needed for the control interface, but the driver itself does not run on 3.3 V alone.
Yes, a laser diode driver typically requires external bias and modulation current-setting resistors, a laser diode, and a photodiode feedback path. The evidence does not list a specific external component bill, but the part is not a standalone module — it needs a supporting circuit.