Rainbow-electronics MAX3738 User Manual

General DescriptionThe MAX3738 is a +3.3V laser driver designed for mul-tirate transceiver modules with data rates from 1Gbpsto 2.7Gbps. Lasers can be

MAX3738Safety CircuitryThe safety circuitry contains a disable input (TX_DISABLE), a latched fault output (TX_FAULT), andfault detectors (Figure 5). T

Design ProcedureWhen designing a laser transmitter, the optical output isusually expressed in terms of average power andextinction ratio. Table 3 show

MAX3738Current Compliance (IMOD≤ 60mA), DC-CoupledThe minimum voltage at the OUT+ and OUT- pinsis 0.7V.For:VDIODE= Diode bias point voltage (1.2V typ)

Layout ConsiderationsTo minimize loss and crosstalk, keep the connectionsbetween the MAX3738 output and the laser diode asshort as possible. Use good

MAX37381Gbps to 2.7Gbps SFF/SFP Laser Driver withExtinction Ratio ControlMaxim cannot assume responsibility for use of any circuitry other than circui

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MAX37381Gbps to 2.7Gbps SFF/SFP Laser Driver withExtinction Ratio Control_____________________________________________________________________________

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MAX37381Gbps to 2.7Gbps SFF/SFP Laser Driver withExtinction Ratio Control_____________________________________________________________________________

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Detailed DescriptionThe MAX3738 laser driver consists of three main parts:a high-speed modulation driver, biasing block withERC, and safety circuitry.

MAX3738Average power is regulated using APC, which keepsconstant current from a photodiode coupled to thelaser. Peak-to-peak power is maintained by co

MAX37381Gbps to 2.7Gbps SFF/SFP Laser Driver withExtinction Ratio Control_____________________________________________________________________________