MAX3735A
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MAX3735A

2.7Gbps, Low-Power SFP Laser Drivers

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Multirate 3.3V Laser Driver for SFP Modules Meets All Requirements for SFF-8472 Digital Diagnostics

warning : NOT RECOMMENDED FOR NEW DESIGNS tooltip
warning : NOT RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 2
1ku List Price
price unavailable
Features
  • Fully Compliant with SFP and SFF-8472 MSAs
  • Programmable Modulation Current from 10mA to 60mA (DC-Coupled)
  • Programmable Modulation Current from 10mA to 85mA (AC-Coupled)
  • Programmable Bias Current from 1mA to 100mA
  • Edge Transition Times <51ps
  • 27mA (typ) Power-Supply Current
  • Multirate 155Mbps to 2.7Gbps Operation
  • Automatic Average Power Control
  • On-Chip Pullup Resistor for TX_Disable
  • 24-Pin 4mm x 4mm QFN package
Additional Details
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The MAX3735A is a +3.3V laser driver for SFP/SFF applications from 155Mbps up to 2.7Gbps. The device accepts differential input 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 MAX3735A 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. The wide modulation current range of 10mA to 60mA (up to 85mA AC-coupled) and bias current of 1mA to 100mA make this product ideal for driving FP/DFB laser diodes in fiber-optic modules. The resistor range for the laser current settings is optimized to interface with the DS1858 SFP controller IC.

The MAX3735A provides 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.

The MAX3735A is available in a 4mm x 4mm TQFN package and operates over the extended temperature range of -40°C to +85°C.

Applications

  • 1G/2G Fibre Channel SFF/SFP Optical Transceiver Modules
  • Gigabit Ethernet SFF/SFP Transceiver Modules
  • Multirate OC-3 to OC-48 FEC SFF/SFP Transceiver Modules
Part Models 2
1ku List Price
price unavailable

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX3735AETG+
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  • HTML
MAX3735AETG+T
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  • HTML
Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX3735AEVKIT

Evaluation Kit for the MAX3735A

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MAX3735AEVKIT

Evaluation Kit for the MAX3735A

Evaluation Kit for the MAX3735A

Features and Benefits

  • Fully Assembled and Tested
  • Single +3.3V Power Supply Operation
  • AC-Coupling Provided On-Board
  • Allows Optical and Electrical Evaluation

Product Detail

The MAX3735A evaluation kit (EV kit) is an assembled demonstration board that provides complete optical and electrical evaluation of the MAX3735A.

The EV kit is composed of two independent sections, one optical and one electrical, on the PC board. The output of the electrical evaluation section is interfaced to an SMP connector that can be connected to a 50Ω terminated oscilloscope. The output of the optical evaluation section is configured for attachment to a laser/monitor diode.

Applications

  • 1G/2G Fibre Channel SFF/SFP Optical Transceiver Modules
  • Gigabit Ethernet SFF/SFP Transceiver Modules
  • Modules
  • Multirate OC-3 to OC-48 FEC SFF/SFP Transceiver Modules

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