The MAX3710 limiting amplifier and burst-mode laser driver from Maxim provides a highly integrated PMD solution for GPON/EPON ONU applications in modules or directly on the ONU board.
The low-jitter driver provides transmit burst mode average power control of laser bias current as well as an integrated modulation current control loop (extinction ratio control or ERC). The ERC eliminates the need for temperature lookup tables (LUTs) controlling the modulation current.
The low-noise limiting amplifier maximises optical sensitivity and has adjustable SD/LOS threshold plus programmable output levels. The differential CML output stage features a slew-rate adjustment for 1,25 Gbps EPON operation.
Integrated bias current monitor, burst mode Tx power monitor and a digital laser power monitor enable a low-cost implementation of next-generation GPON and EPON modules with digital diagnostics.
A novel auto-calibration mode enables low-cost fibre-optic module production. An integrated 3-wire digital interface controls the laser driver and limiting amplifier functions, and enables communication with a low-cost controller.
The MAX3710 is offered in a 4 x 4 mm, 24-pin TQFN package with exposed pad, and operates over the -40°C to +95°C temperature range.
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