MAX3737

NOT RECOMMENDED FOR NEW DESIGNS

Multirate Laser Driver with Extinction Ratio Control

Multirate Laser Driver with Extinction-Ratio Control Designed for Multirate Transceiver Modules with Data Rates from 155Mbps to 2.7Gbps

Data Sheet (Rev. 3) Product Selection Table
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Overview

  • Single 3.3V Power Supply
  • 47mA Power-Supply Current
  • 85mA Modulation Current
  • 100mA Bias Current
  • Automatic Power Control (APC)
  • Modulation Compensation
  • On-Chip Temperature Compensation
  • Self-Biased Inputs for AC-Coupling
  • Ground-Referenced Current Monitors
  • Laser Safety, Shutdown, and Alarm Outputs

The MAX3737 is a 3.3V laser driver designed for multirate transceiver modules with data rates from 155Mbps to 2.7Gbps. Lasers can be DC-coupled to the MAX3737 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 MAX3737 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 makes the MAX3737 ideal for driving FP/DFB lasers in fiber-optic modules. External resistors set the required laser current levels. The MAX3737 provides transmit disable control (TX_DISABLE), single-point fault tolerance, bias-current monitoring, modulation-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 MAX3737 is compliant with the SFF-8472 transmitter diagnostic and SFP MSA timing requirements.

The MAX3737 is offered in a 5mm x 5mm 32-pin thin QFN and QFN package and operates over the -40°C to +85°C extended temperature range.

Applications

  • 1Gbps/2Gbps Fibre Channel SFF/SFP and GBIC Transceivers
  • Gigabit Ethernet SFF/SFP and GBIC Transceivers
  • Multirate OC-3 to OC-48 FEC Transceivers
MAX3737
Multirate Laser Driver with Extinction Ratio Control
MAX3737: Typical Operating Circuit
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Documentation

Data Sheet 1

Reliability Data 1

Technical Articles 4

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Hardware Ecosystem

Parts Product Life Cycle Description
Interface Transceivers & Isolators 1
MAX3735
NOT RECOMMENDED FOR NEW DESIGNS 2.7Gbps, Low-Power SFP Laser Drivers
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Tools & Simulations

IBIS Model 1

Evaluation Kits

MAX3737EVKIT

Evaluation Kit for the MAX3737

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Features and Benefits

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

Product Details

The MAX3737 evaluation kit (EV kit) is an assembled demonstration board that provides complete optical and electrical evaluation of the MAX3737.

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

  • 1Gbps/2Gbps Fibre Channel SFF/SFP and GBIC Transceivers
  • Gigabit Ethernet SFF/SFP and GBIC Transceivers
  • Multirate OC-3 to OC-48 FEC Transceivers
MAX3737EVKIT
Evaluation Kit for the MAX3737

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