Laser Driver 4.25Gbps 1-CH 24-Pin VQFN EP T/R

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.

Multirate Operation From 155 Mbpsup to 4.25 Gbps

Bias Current Programmable From 1 mA to 100 mA

Modulation Current Programmable From 5 mA to 85 mA

APC and Fault Detection

Fault Mode Selection

Bias and Photodiode Current Monitors

CML Data Inputs

Temperature Compensation of Modulation Current

Single 3.3-V Supply

Surface-Mount, Small-Footprint, 4 mm × 4 mm 24-Lead QFN Package

APPLICATIONS

• SONET/SDH Transmission Systems
• Fibre Channel Optical Modules
• Fiber Optic Data Links
• Digital Cross-Connects
• Optical Transmitters