MAX3735AETG+T

MAXIM INTEGRATED PRODUCTS  MAX3735AETG+T  芯片, 激光二极管驱动器

The is a 2.7Gbps, low power SFP laser driver in 24 pin TQFN package. The device accept differential input data and provide bias and modulation currents for driving a laser. DC-coupling to the laser allows for multirate applications and reduces number of external components. It is fully compliant with the SFP MSA timing and the SFF-8472 transmit diagnostic requirements. An automatic power-control APC feedback loop is incorporated to maintain a constant average optical power over temperature and lifetime. It provide transmit-disable control, a single-point latched transmit-failure monitor output, photocurrent monitoring and bias-current monitoring to indicate when the APC loop is unable to maintain the average optical power. It is used in gigabit Ethernet SFP/SFF transceiver modules, multirate OC3 to OC48-FEC SFP/SFF transceiver modules and 1G/2G fibre channel SFP/SFF transceiver modules.

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Supply voltage range is 2.97V to 3.63V

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Operating temperature range from -40°C to +85°C

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SFP reference design available

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Programmable modulation current from 10mA to 60mA DC-coupled, edge transition times <51ps

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Programmable modulation current from 10mA to 85mA AC-coupled, power supply current is 27mA typ

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Programmable bias current from 1mA to 100mA, multirate 155Mbps to 2.7Gbps operation

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Automatic average power control

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On-chip pull-up resistor for TX_DISABLE

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Bias current monitor gain stability is +6% at 1mA