Laser Drivers 3.3V 4.5 Gbps AC coupled : 60 mA Imod/voltage contr'l/PbSn/bulk (I Temp)

Laser Drivers 3.0V to 5.5V, 1.25Gbps/2.5Gbps LAN Laser Drivers

The MAX3949 is a 3.3V, multirate, low-power laser diode driver designed for Ethernet, Fibre Channel, and SONET transmission systems at data rates up to 11.3Gbps. This device is optimized to drive a differential transmitter optical subassembly (TOSA) with a 25Ω flex circuit. The unique design of the output stage enables use of unmatched TOSAs.The device receives differential AC-coupled signals with on-chip termination. It can deliver laser modulation currents of up to 85mA at an edge speed of 22ps (20% to 80%) into a 5Ω external differential load. The device is designed to have a high-bandwidth differential signal path with on-chip back termination resistors integrated into its outputs. An input equalization block can be activated to compensate for SFP+ host connector losses. The integrated bias circuit provides programmable laser bias currents up to 105mA. Both the laser bias current generator and the laser modulator can be disabled from a single pin.The use of a 3-wire digital interface reduces the pin count while permitting adjustment of input equalization, polarity, output deemphasis, and modulation and bias currents without the need for external components. The device is available in a 3mm x 3mm, 16-pin TQFN package, and is specified for the -40°C to +95°C extended temperature range.Applications10GBASE-LR SFP+ Optical Transceivers10GBASE-LRM SFP+ Optical TransceiversOC192-SR SFP+ SDH/SONET Transceivers

The MAX3646 is a +3.3V laser driver designed for multirate transceiver modules with data rates from 155Mbps to 622Mbps. Lasers can be DC-coupled to the MAX3646 for reduced component count and ease of multirate operation.Laser extinction ratio control (ERC) combines the features of automatic power control (APC), modulation compensation, and built-in thermal compensation. The APC loop maintains constant average optical power. Modulation compensation increases the modulation current in proportion to the bias current. These control loops, combined with thermal compensation, maintain a constant optical extinction ratio over temperature and lifetime.The MAX3646 accepts differential data input signals. The wide 5mA to 60mA (up to 85mA AC-coupled) modulation current range and up to 100mA bias current range, make the MAX3646 ideal for driving FP/DFB lasers in fiber optic modules. External resistors set the required laser current levels. The MAX3646 provides transmit disable control (TX_DISABLE), single-point fault tolerance, bias-current monitoring, and photocurrent monitoring. The device also offers a latched failure output (TX_FAULT) to indicate faults, such as when the APC loop is no longer able to maintain the average optical power at the required level. The MAX3646 is compliant with the SFF-8472 transmitter diagnostic and SFP MSA timing requirements.The MAX3646 is offered in a 4mm x 4mm, 24-pin thin QFN package and operates over the extended -40°C to +85°C temperature range.Applications125Mbps Ethernet SFP, GBIC, and 1 x 9 TransceiversMultirate OC-3 to OC-12 FEC Transceivers

The MAX3735A is a +3.3V laser driver for SFP/SFF applicationsfrom 155Mbps up to 2.7Gbps. The device acceptsdifferential input data and provides bias and modulationcurrents for driving a laser. DC-coupling to the laser allowsfor multirate applications and reduces the number of externalcomponents. The MAX3735A is fully compliant with theSFP MSA timing and the SFF-8472 transmit diagnosticrequirements.An automatic power-control (APC) feedback loop is incorporatedto maintain a constant average optical power overtemperature and lifetime. The wide modulation currentrange of 10mA to 60mA (up to 85mA AC-coupled) and biascurrent of 1mA to 100mA make this product ideal for drivingFP/DFB laser diodes in fiber-optic modules. The resistorrange for the laser current settings is optimized to interfacewith the DS1858 SFP controller IC.The MAX3735A provides transmit-disable control, asingle-point latched transmit-failure monitor output, photocurrentmonitoring, and bias-current monitoring to indicatewhen the APC loop is unable to maintain the averageoptical power.The MAX3735A is available in a 4mm x 4mm TQFN packageand operates over the extended temperature range of -40°C to +85°C.Applications1G/2G Fibre Channel SFF/SFP Optical Transceiver ModulesGigabit Ethernet SFF/SFP Transceiver ModulesMultirate OC-3 to OC-48 FEC SFF/SFP Transceiver Modules

The MAX3736 is a compact, +3.3V multirate laser driver for SFP/SFF applications up to 3.2Gbps. The device accepts differential data and provides bias and modulation currents for driving a laser. DC-coupling to the laser allows for multirate applications, and reduces the number of external components.The wide 5mA to 60mA (85mA AC-coupled) modulation current range and 1mA to 100mA bias current make the MAX3736 ideal for driving FP/DFB laser diodes in fiber optic modules. The laser current setting can be controlled by a current DAC, a voltage DAC, or a resistor. Very low power dissipation, small package size, and reduced component count, make this part an ideal solution for SFP-module applications.The MAX3736 is available in a small 3mm x 3mm, 16-pin thin QFN package. It operates over a -40° to +85° temperature range.Applications10G Ethernet LX4 Modules1G/2G Fibre Channel SFF/SFP Transceiver ModulesGigabit Ethernet SFF/SFP Transceiver ModulesMultirate OC-3 to OC-48 FEC SFF/SFP Transceiver Modules

Laser Drivers 3.2Gbps, Low-Power, Compact, SFP Laser Driver

3.3V, 3.2Gbps VCSEL Driver Features: 60ps Rise and Fall Times, 10ps Deterministic Jitter 155Mbps to 3.2Gbps Laser Diode Driver for VCSELs Eye Diagram is Stable and Consistent Across Modulation Range and Temperature 1mA to 12mA Modulation Current Easy Board Layout, Laser can be Remotely Located if Desired No Input Matching or AC Coupling Components Needed On-Chip ADC for Monitoring Critical Parameters Digital Setup and Control with I2C™ Serial Interface Emulation and Set-Up Software Available Operates Standalone or with a Microprocessor On-Chip DACs Eliminate External Potentiometers Constant Current or Automatic Power Control First and Second Order Temperature Compensation On-Chip Temperature Sensor Extensive Eye Safety Features Single 3.3V Supply 4mm × 4mm QFN Package

Laser Drivers 3.2Gbps Low-Power SFP Laser Driver

Clock and Data Recovery IC 32-Pin QFN