Texas Instruments ONET4201LD
The ONET4201LD 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. The device is available in a small-footprint, 4-mm × 4-mm, 24-pin, QFN package.FEATURES
1● Multirate Operation From 155 Mbps up 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
● Active Back-Termination at the Output
● 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
DESCRIPTION
Also provided are automatic power control (APC), temperature compensation of modulation current, fault detection, and current monitor features. The circuit requires a single 3.3-V supply. This power-efficient laser driver is characterized for operation from –40°C to 85°C. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.