The ONET4211LD is a laser driver for multiple fiber optic applications up to 4.25 Gbps. The device accepts CML input data and provides bias and modulation currents for driving a laser diode. Also provided are automatic power control (APC), temperature compensation of modulation current, fault detection, and current monitor features.
The device is available in a small-footprint, 4 mm × 4 mm 24-pin QFN package. The circuit requires a single 3.3-V supply.
This power-efficient laser driver is characterized for operation from -40°C to 85°C.
| Type | Laser driver |
| Data rate (max) (Mbps) | 4250 |
| Features | Automatic power control loop, Bias current digital select, Modulation current digital select |
| Supply current (typ) (µA) | 22000 |
| Imod (A) | 0.085 |
| Supply current (max) (µA) | 45000 |
| Deterministic jitter (typ) (ps) | 13 |
| Operating temperature range (°C) | -40 to 85 |
| VQFN (RGE) | 24 | 16 mm² 4 x 4 |
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