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Maxim > Products > [Optoelectronics] 
MAX3735, MAX3735A
2.7Gbps, Low-Power SFP Laser Drivers

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


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 1.1MB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX3735/MAX3735A are +3.3V laser drivers for SFP/SFF applications from 155Mbps up to 2.7Gbps. The devices 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 the number of external components. The MAX3735/MAX3735A are 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 MAX3735/MAX3735A 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. The MAX3735A also features improved multirate operation. The MAX3735/MAX3735A come in package and die form, and operate over the extended temperature range of -40°C to +85°C.

An evaluation kit is available:  MAX3735AEVKIT  

Key Features   Applications/Uses
  • SFP Reference Design Available
  • 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

 
  		• 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

    Key Specifications:  Laser Drivers
    Part Number Target Oper. Range
    (Gbps)    		 Data Rate
    (Mbps)    		 Data Rate
    (Mbps)    		 VSUPPLY
    (V)    		 ICC
    (mA)    		 I/O Type IMOD
    (mA)    		 IBIAS
    (mA)    		 EV Kit Package/Pins Price
    min max typ max max See Notes
    MAX3735  1 to 4.5 155 2700 3.3 27 CML 60 100 Yes
    QFN/24
    TQFN/24
    		 $2.84 @1k
    MAX3735A 
    QFN/24
    TQFN/24
    		 $2.84 @1k
    See All Laser Drivers (24)

    Diagram
    MAX3735, MAX3735A: Typical Application Circuit
    Typical Application Circuit

    Application Notes
  		• Application Note 596: HFAN-02.2.0: Extinction Ratio and Power Penalty - MAX3735
  		• Application Note 985: HFAN-09.0.2: Optical Signal-to-Noise Ratio and the Q-Factor in Fiber-Optic Communications Systems - MAX3735
  		• Application Note 1747: MAX3735: Choosing the APC Loop Capacitors Used with MAX3735/MAX3735A SFP Module Designs - MAX3735, MAX3735A
  		• Application Note 1766: HFRD-03.0: Multi-Rate (1Gbps - 2.7Gbps) Small Form Factor Pluggable (SFP) Transmitter - MAX3735
  		• Application Note 1908: MAX3735: Using the MAX3735 in a Small Form Factor (SFF) Transceiver Module - MAX3735
  		• Application Note 1937: HFAN-02.3.3: Optimizing the Resolution of Laser Driver Current Settings Using a Linear Digital Potentiometer - MAX3735
  		• Application Note 2111: MAX3735A: Laser Driver Output Configurations, Part 1: DC-Coupled Optimization Techniques - MAX3735, MAX3735A
  		• Application Note 2135: HFRD-04.0: 2.7Gbps, 1310nm Small Form Factor Pluggable (SFP) Transceiver - MAX3735A
  		• Application Note 2703: MAX3735A: Laser Driver Output Configurations, Part 3: Differential Drive - MAX3735A
  		• Application Note 2930: HFAN-02.4.0: Over-Voltage Protection for SFP Laser Drivers [Application Brief] - MAX3735A
  		• Application Note 3015: MAX3735A: MAX3735A Laser Driver Output Configurations, Part 4: Driving VCSELS - MAX3735, MAX3735A
  		• Application Note 3239: HFAN-02.5.0: Single-Ended vs Differential Methods of Driving a Laser Diode - MAX3735A
  		• Application Note 3376: HFRD-15.3: High-Frequency SFP Host Board (Includes Integrated RS-232 to I²C Conversion) - MAX3735A
  		• Application Note 3427: Interfacing the DS1859 Digitally Controlled Resistors to the MAX3735 Laser Driver - MAX3735, MAX3735A
  		• Application Note 3600: HFRD-21.0: 2.5Gbps Cooled TOSA Evaluation Board (Includes MAX3735A Laser Driver and MAX8521 TEC Controller) - MAX3735A
  		• Application Note 3725: HFAN-02.6.0: Reducing Noise and Wander in Low-Speed (<622Mbps) Optical Transmitters - MAX3735A
  		• Application Note 3742: MAX3735A: Special Considerations When Interfacing the MAX3735A to the DS1859 - MAX3735A
  		• Application Note 3766: HFTA-12.0: Measuring Crosstalk Penalty in High-Speed Bidirectional Serial Communication Modules - MAX3735A

    Evaluation Kits
  		• MAX3735AEVKIT

    Design Guides
  		• Fiber (PDF)

    Reliability Reports
  		• Reliability Report: MAX3735.pdf MAX3735A.pdf
  		• Show FIT data for:

    Software/Models
  		• MAX3735AETG IBIS Model
  		• MAX3735ETG SPICE Input/Output Model

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-8 of 8

    MAX3735 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX3735E/D    
    		Active DICE SALES;NA pin;0 mm²

    Land Pattern: Not Applicable
    Use pkgcode/variation: DICE*
    		See data sheet
    MAX3735A Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX3735AE/D    
    		Active DICE SALES;NA pin;0 mm²

    Land Pattern: Not Applicable
    Use pkgcode/variation: DICE*
    		See data sheet
    MAX3735AEGG    
    		Active QFN;24 pin;16 mm²
    Outline Drawing: 21-0106 (PDF)
    Land Pattern: 90-0219 (PDF)
    Use pkgcode/variation: G2444-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX3735AEGG-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX3735AETG    
    		Active TQFN;24 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0021 (PDF)
    Use pkgcode/variation: T2444-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX3735AETG-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX3735AETG+  
    		Active TQFN;24 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0021 (PDF)
    Use pkgcode/variation: T2444+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX3735AETG+T    
    		Active TQFN;24 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0021 (PDF)
    Use pkgcode/variation: T2444+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  		• New Product Press Release 2002-11-11 

    Related Products
    MAX3273 +3.3V, 2.5Gbps Low-Power Laser Driver

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     Description 
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    Document Ref.: 19-2529; Rev 2; 2004-08-24
    This page last modified: 2009-10-14


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