ONET4291VA
www.ti.com SLLS674 – SEPTEMBER 2005 1 GBPS TO 4.25 GBPS MULTI-RATE VCSEL DRIVER
FEATURES Multi-Rate Operation from 1 Gbps Up
To 4.25 Gbps
2-Wire Digital Interface
Digitally Selectable Modulation Current
Digitally Selectable Bias Current
Automatic Power Control (APC) Loop
Supports Transceiver Management
System (TMS)
Includes Laser Safety Features
Analog Temperature Sensor Output
Single 3.3-V Supply Operating Temperature –40°C to 85°C
Small Footprint Surface Mount 4 mm Г— 4 mm,
20-Pin QFN Package APPLICATIONS Multirate SFP/SFF Modules
1.0625 Gbps, 2.125 Gbps, and 4.25 Gbps Fibre
Channel Transmitters
Gigabit Ethernet Transmitters DESCRIPTION
The ONET4291VA is a versatile high-speed multi-rate VCSEL driver for fiber optic applications with data rates up
to 4.25 Gbps.
The device provides a 2-wire interface which allows digital control of the modulation and bias currents,
eliminating the need for of external components.
The ONET4291VA includes an integrated automatic power control loop as well as circuitry to support laser safety …
