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LTC5100EUF Datasheet(PDF) 1 Page - Linear Technology |
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LTC5100EUF Datasheet(HTML) 1 Page - Linear Technology |
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1 / 52 page  LTC5100 1 sn5100 5100fs FEATURES APPLICATIO S DESCRIPTIO TYPICAL APPLICATIO s Gigabit Ethernet and Fibre Channel Transceivers s SFF and SFP Transceiver Modules s Proprietary Fiber Optic Links , LTC and LT are registered trademarks of Linear Technology Corporation. s 155Mbps to 3.2Gbps Laser Diode Driver for VCSELs* s 60ps Rise and Fall Times, 10ps Deterministic Jitter s Eye Diagram is Stable and Consistent Across Modulation Range and Temperature s 1mA to 12mA Modulation Current s Easy Board Layout, Laser can be Remotely Located if Desired s No Input Matching or AC Coupling Components Needed s On-Chip ADC for Monitoring Critical Parameters s Digital Setup and Control with I2C TM Serial Interface s Emulation and Set-Up Software Available** s Operates Standalone or with a Microprocessor s On-Chip DACs Eliminate External Potentiometers s Constant Current or Automatic Power Control s First and Second Order Temperature Compensation s On-Chip Temperature Sensor s Extensive Eye Safety Features s Single 3.3V Supply s 4mm × 4mm QFN Package 3.3V, 3.2Gbps VCSEL Driver I2C is a trademark of Philips Electronics N.V. *Vertical Cavity Surface Emitting Laser **Downloadable from www.linear.com Figure 1. VCSEL Transmitter with Automatic Power Control The LTC ®5100 is a 3.2Gbps VCSEL driver offering an unprecedented level of integration and high speed perfor- mance. The part incorporates a full range of features to ensure consistently outstanding eye diagrams. The data inputs are AC coupled, eliminating the need for external capacitors. The LTC5100 has a precisely controlled 50 Ω output that is DC coupled to the laser, allowing arbitrary placement of the IC. No coupling capacitors, ferrite beads or external transistors are needed, simplifying layout, reducing board area and the risk of signal corruption. The unique output stage of the LTC5100 confines the modula- tion current to the ground system, isolating the high speed signal from the power supply to minimize RFI. The LTC5100 supports fully automated production with its extensive monitoring and control features. Integrated 10-bit DACs eliminate the need for external potentiometers. An on- board 10-bit ADC provides the laser current and voltage, as well as monitor diode current and temperature. Status information is available from the I2C serial interface for feed- back and statistical process control. An internal digital controller compensates laser tempera- ture drift and provides extensive laser safety features. 3.2Gbps Electrical Eye Diagram 1mA/DIV 50ps/DIV 5100 TA01 – + ADC 3.3V SCL EN SDA VDD VSS 24LC00 EEPROM IN SOT-23 PACKAGE MD MODA SRC MODB DAC DAC 10nF 3.2Gbps MODULATOR FAULT WARNING: POTENTIAL EYE HAZARD. SEE “EYE SAFETY INFORMATION” 100 Ω IN+ IN– 50 Ω 5100 F01 DIGITAL CONTROLLER ARBITRARY DISTANCE SERIALIZER |
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