ONET1141L Datasheet, PDF (1/30 Pages) Texas Instruments – 11.3 Gbps Modulator Driver

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ONET1141L
SLLSEB7 – MAY 2012
11.3 Gbps Modulator Driver
Check for Samples: ONET1141L
FEATURES
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• Digitally Selectable Output Amplitude up to
2.0VPP Single-Ended
• Digitally Selectable Bias Current up to 145mA
Source
• 2-wire Digital Interface with Integrated DACs
and ADC for Control and Diagnostic
Management
• Automatic Power Control (APC) Loop
• Adjustable Rise and Fall Times
• Programmable Input Equalizer
• Cross-Point Control
• Selectable Monitor PD Current Range and
Polarity
• Includes Laser Safety Features
• Single 3.3V Supply
• –40°C to 100°C Operation
• Surface Mount Small Footprint 4mm × 4mm 24
Pin RoHS Compliant QFN Package
APPLICATIONS
• 10 Gigabit Ethernet Optical Transmitters
• SONET OC-192/SDH STM-64 Optical
Transmitters
• 10G-EPON and XG-PON
• SFP+ and XFP Transceiver Modules
• XENPAK, XPAK, X2 and 300-pin MSA
Transponder Modules
DESCRIPTION
The ONET1141L is a high-speed, 3.3V electroabsorption modulator driver designed to bias and modulate an
electroabsorptive modulated laser (EML) at data rates from 1 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 adjustment
and rise and fall time adjustment are available to improve the optical eye mask margin. An optional input
equalizer can be used for equalization of up to 150mm (6”) of microstrip or stripline transmission line on FR4
printed circuit boards. The device contains internal analog to digital and digital to analog converters to eliminate
the need for special purpose microcontrollers.
The ONET1141L includes an integrated automatic power control (APC) loop which compensates for variations in
laser average optical power over voltage and temperature and circuitry to support laser safety and transceiver
management systems.
The modulator driver is characterized for operation from –40°C to 100°C case temperatures and is available in a
small footprint 4mm × 4mm 24 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 © 2012, Texas Instruments Incorporated