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Maxim > Products > [Optoelectronics] 
MAX3746
Low-Power, 622Mbps to 3.2Gbps Limiting Amplifier

Low-Power, Compact, Multirate Limiting Amplifier for SFF/SFP Applications Functions as a Data Quantizer for SONET, Fibre-Channel and Gigabit Ethernet Optical Receivers


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 332kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX3746 multirate limiting amplifier functions as a data quantizer for SONET, Fibre-Channel, and Gigabit Ethernet optical receivers. The amplifier accepts a wide range of input voltages and provides selectable-level, current-mode logic (CML) output voltages with controlled edge speeds. A received-signal-strength indicator (RSSI) is available when the MAX3746 is DC-coupled to the MAX3744/MAX3724 SFP transimpedance amplifier (TIA). A receiver consisting of the MAX3744/MAX3724 and the MAX3746 can provide up to 19dB RSSI dynamic range. Additional features include a programmable loss-of-signal (LOS) detect, an optional disable function (DISABLE), and an output-signal polarity reversal (OUTPOL). Output disable can be used to implement squelch.

The combination of the MAX3746 and the MAX3744/MAX3724 allows for the implementation of all the small-form-factor SFF-8472 digital diagnostic specifications using a standard 4-pin TO-46 header.

The MAX3746 is pin-for-pin compatible with the MAX3748A limiting amplifier and consumes 30% less power. The MAX3746 is packaged in a 3mm x 3mm, 16-pin QFN package.

An evaluation kit is available:  MAX3746EVKIT  

Key Features   Applications/Uses
  • SFP Reference Design Available
  • Low 115mW Power Consumption
  • 16-Pin QFN Package with 3mm x 3mm Footprint
  • 70ps Rise and Fall Time
  • Loss-of-Signal with Programmable Threshold
  • RSSI Interface (with MAX3744/MAX3724 TIA)
  • Output Disable
  • Polarity Select
  • 8.4psP-P Deterministic Jitter (3.2Gbps)
  • Improved EMI Performance
  • Selectable CML Output levels
  • Pin Compatible with MAX3748A

 
  		• Fibre Channel SFF/SFP Transceiver Modules
  		• Gigabit Ethernet SFF/SFP Transceiver Modules
  		• Multirate OC-12 to OC-48 FEC SFF/SFP
  		• Transceiver Modules

    Key Specifications:  Limiting Amplifiers
    Part Number Target Oper. Range
    (Gbps)    		 Data Rate
    (Mbps)    		 Data Rate
    (Mbps)    		 VSUPPLY
    (V)    		 ICC
    (mA)    		 I/O Type Input Sens.
    (mV)    		 LOS Sens.
    (mV)    		 Edge Speed
    (ps)    		 EV Kit Package/Pins Smallest Available Pckg.
    (mm2)    		 Price
    min max typ min max max w/pins See Notes
    MAX3746  1 to 4.5 622 3200 3.3 35 CML 2 4 70 Yes
    TQFN/16
    		 10 $4.75 @1k
    See All Limiting Amplifiers (17)

    Diagram
    MAX3746: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes
  		• Application Note 3290: HFAN-04.5.3: A Stressed Source for Testing 4Gbps 850nm FC Receivers - MAX3746
  		• Application Note 3376: HFRD-15.3: High-Frequency SFP Host Board (Includes Integrated RS-232 to I²C Conversion) - MAX3746
  		• Application Note 3766: HFTA-12.0: Measuring Crosstalk Penalty in High-Speed Bidirectional Serial Communication Modules - MAX3746

    Evaluation Kits
  		• MAX3746EVKIT

    Design Guides
  		• Fiber (PDF)

    Reliability Reports
  		• Show FIT data for:
  		• Request Reliability Report for:

    Software/Models
  		• MAX3746ETE 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: 1-4 of 4

    MAX3746 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX3746HETE#TG16    
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0033 (PDF)
    Use pkgcode/variation: T1633FH-3*
    		-40°C to +85°C RoHS/Lead-Free: RoHS Qualified
    Materials Analysis
    MAX3746ETE    
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0033 (PDF)
    Use pkgcode/variation: T1633F-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX3746ETE-T    
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0033 (PDF)
    Use pkgcode/variation: T1633F-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX3746HETE#G16    
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0033 (PDF)
    Use pkgcode/variation: T1633FH-3*
    		-40°C to +85°C RoHS/Lead-Free: RoHS Qualified
    Materials Analysis

    More Information
  		• Topmark Coding: MAX3746
  		• New Product Press Release 2004-08-13 
  		• Product Ad: Download

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    Document Ref.: 19-3386; Rev 2; 2007-06-20
    This page last modified: 2007-06-22


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