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MAX3748, MAX3748A, MAX3748H
Compact 155Mbps to 4.25Gbps Limiting Amplifier

Compact, 155Mbps to 4.25Gbps Multirate SFF/SFP Limiting Amplifier 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, 320kB)
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Description
The MAX3748/MAX3748A multirate limiting amplifiers function as a data quantizer for SONET, Fibre Channel, and Gigabit Ethernet optical receivers. The amplifier accepts a wide range of input voltages and provides constant-level current-mode logic (CML) output voltages with controlled edge speeds.

A received-signal-strength indicator (RSSI) is available when the MAX3748/MAX3748A are combined with the MAX3744 SFP transimpedance amplifier (TIA). A receiver consisting of the MAX3744 and the MAX3748/MAX3748A 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 MAX3748/MAX3748A and the MAX3744 allows for the implementation of all the small-form-factor SFF-8472 digital diagnostic specifications using a standard 4-pin TO-46 header. The MAX3748/MAX3748A are packaged in a 3mm x 3mm, 16-pin thin QFN package with an exposed pad.

An evaluation kit is available:  MAX3748EVKIT   MAX3748AEVKIT  

Key Features   Applications/Uses
  • SFP Reference Design Available
  • 16-Pin TQFN Package with 3mm x 3mm Footprint
  • Single +3.3V Supply Voltage
  • 86ps Rise and Fall Time
  • Loss of Signal with Programmable Threshold
  • RSSI Interface (with MAX3744 TIA)
  • Output Disable
  • Polarity Select
  • 8.7psP-P Deterministic Jitter (4.25Gbps)

 
  • Fibre Channel SFF/SFP Transceiver Modules
  • Gigabit Ethernet SFF/SFP Transceiver Modules
  • Multirate OC-3 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
    MAX3748 
    1 to 4.5
    <1
    155 4250 3.3 32 CML 5 4.1 115 Yes
    TQFN/16
    10 $2.84 @1k
    See All Limiting Amplifiers (17)

    Diagram
    MAX3748, MAX3748A, MAX3748B: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes
  • Application Note 2135: HFRD-04.0: 2.7Gbps, 1310nm Small Form Factor Pluggable (SFP) Transceiver - MAX3748
  • Application Note 2360: HFRD-05.0: Multi-Rate (1Gbps - 3.2Gbps) 850nm Small Form Factor Pluggable (SFP) Transceiver - MAX3748
  • Application Note 3290: HFAN-04.5.3: A Stressed Source for Testing 4Gbps 850nm FC Receivers - MAX3748
  • Application Note 3376: HFRD-15.3: High-Frequency SFP Host Board (Includes Integrated RS-232 to I²C Conversion) - MAX3748, MAX3748A
  • Application Note 3451: HFRD-16.0: 1Gbps to 4.25Gbps Active Copper SFP Cable Assembly - MAX3748A
  • Application Note 3766: HFTA-12.0: Measuring Crosstalk Penalty in High-Speed Bidirectional Serial Communication Modules - MAX3748A
  • Application Note 3890: Using the DS28CZ04 in an Active Copper SFP Cable Assembly - MAX3748A

    Evaluation Kits
  • MAX3748EVKIT
  • MAX3748AEVKIT

    Design Guides
  • Fiber (PDF)

    Reliability Reports
  • Reliability Report: MAX3748.pdf MAX3748A.pdf
  • Show FIT data for:
  • Request Reliability Report for:

    Software/Models
  • MAX3748ETE IBIS Model
  • MAX3748AETE IBIS Model
  • MAX3748ETE 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

    MAX3748A Free
    Sample
    Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX3748AETE    
    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
    MAX3748AETE-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
    MAX3748H Free
    Sample
    Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX3748HETE#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
    MAX3748HETE#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: MAX3748
  • New Product Press Release 2003-02-06 

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    Document Ref.: 19-2717; Rev 5; 2008-11-18
    This page last modified: 2009-01-19


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