ONET8501V_17 Datasheet, PDF (1/29 Pages) Texas Instruments – 11.3 Gbps Differential VCSEL Driver With Output Waveform Shaping

ONET8501V
www.ti.com
SLLS837B – JUNE 2007 – REVISED SEPTEMBER 2007
11.3 Gbps Differential VCSEL Driver With Output Waveform Shaping
FEATURES
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• Up to 11.3 Gbps Operation
• 2-Wire Digital Interface
• Digitally Selectable Modulation Current up to
24 mApp Differential
• Digitally Selectable Bias Current up to 20 mA
• Automatic Power Control (APC) Loop
• Supports Transceiver Management System
(TMS)
• Programmable Input Equalizer
• Output Waveform Control
• Includes Laser Safety Features
• Analog Temperature Sensor Output
• Selectable Monitor Photodiode Current Range
• Output Polarity Select
• Single 3.3V Supply
• Operating Temperature –40°C to 85°C
• Surface Mount Small Footprint 4mm × 4mm 20
Pin RoHS compliant QFN Package
APPLICATIONS
• 10 Gigabit Ethernet Optical Transmitters
• 8x and 10x Fibre Channel Optical Transmitters
• SONET OC-192/SDH STM-64 Optical
Transmitters
• SFP+ and XFP Transceiver Modules
• XENPAK, XPAK, X2 and 300-pin MSA
Transponder Modules
DESCRIPTION
The ONET8501V is a high-speed, 3.3V laser driver designed to directly modulate VCSELs at data rates from
2 Gbps up to 11.3 Gbps.
The device provides a two-wire serial interface which allows digital control of the modulation and bias currents,
eliminating the need for external components. Output waveform control, in the form of cross point control and
independent over- and undershoot capability on the rising and falling edges is also available to improve VCSEL
edge speeds and the optical eye diagram. An optional input equalizer can be used for equalization of up to
300mm (12 inch) of microstrip or stripline transmission line on FR4 printed circuit boards.
The ONET8501V includes an integrated automatic power control (APC) loop as well as circuitry to support laser
safety and transceiver management systems. The VCSEL driver is characterized for operation from –40°C to
85°C ambient temperatures and is available in a small footprint 4mm × 4mm 20 pin RoHS compliant QFN
package.
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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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007, Texas Instruments Incorporated