National Semiconductor | High-performance Analog

 

 LM4865   

750mW Audio Power Amplifier with DC Volume Control and Headphone Switch
Click link to Download

Features
  • DC voltage volume control
  • Headphone amplifier mode
  • "Click and pop" suppression
  • Shutdown control when volume control pin is low
  • Thermal shutdown protection
  • Description

    The LM4865 is a mono bridged audio power amplifier with DC voltage volume control. The LM4865 is capable of delivering 750mW of continuous average power into an 8 load with less than 1% THD when powered by a 5V power supply. Switching between bridged speaker mode and headphone (single ended) mode is accomplished using the headphone sense pin. To conserve power in portable applications, the LM4865's micropower shutdown mode (IQ = 0.7µA, typ) is activated when less than 300mV is applied to the DC Vol/SD# pin.

    Boomer audio power amplifiers are designed specifically to provide high power audio output while maintaining high fidelity. They require few external components and operate on low supply voltages.

    Key Specification
    PO at 1.0% THD+N into 8 SO, micro SMD 750mW (typ)
    PO at 10% THD+N into 8 SO, micro SMD 1W (typ)
    Shutdown current0.7µA(typ)
    Supply voltage range2.7V to 5.5V


    Applications

  • GSM phones and accessories, DECT, office phones
  • Hand held radio
  • Other portable audio devices



  • Typical Application
    click for larger image


    Connection Diagram
    click for larger image



    Typical Performance
    click for larger image


     

    ParametersValues
    Power@ 8Ohms, 1% THD 0.75 Watt
    Power@ 8Ohms, 10% THD 1 Watt
    THD 0.6 %
    PSRR 50 dB
    SNR 115 dB
    Channels 1 Channels
    Supply Range +2.7 - +5.5 V
    THD Conditions Po=300mW @ Vs=5V, R=8 ohms
    User Supply 5 Volt
    Shutdown Type High
    Temperature Min -40 deg C
    Temperature Max 85 deg C

    Datasheets
    TitleSizeDateOther
    Language
    LM4865 750mW Audio Power Amplifier with DC Volume Control and Headphone Switch512
    Kbytes
    10-Oct-02日本語  

    Part Number(s)
    (NSID)
    Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM4865M/NOPB

    LM4865M

    RoHS Status


    SOIC NARROW
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide365
    AVNET-EMWorldwide309
    DIGI-KEYWorldwide434
    FARNELLEurope and Asia594
    MOUSERWorldwide461
    TAYLORAmericas365
    $0.76 each at 1K+ pcsrail
    of
    95
    LM4865MM/NOPB

    LM4865MM

    RoHS Status


    MINI SOIC
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide2000
    AVNET-EMWorldwide2000
    DIGI-KEYWorldwide1486
    MOUSERWorldwide990
    NEWARKAmericas495
    TAYLORAmericas2000
    $0.76 each at 1K+ pcsreel
    of
    1000
    LM4865MMX/NOPB

    LM4865MMX

    RoHS Status


    MINI SOIC
    Full production
    Lead Time: 8 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $0.76 each at 1K+ pcsreel
    of
    3500
    LM4865MX/NOPB


    RoHS Status


    SOIC NARROW
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide5000
    AVNET-EMWorldwide5000
    DIGI-KEYWorldwide0
    MOUSERWorldwide1500
    TAYLORAmericas5000
    $0.76 each at 1K+ pcsreel
    of
    2500

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LM4865IBP
    NONE
    NATIONAL SEMICONDUCTOR
    06 Mar 2007
    LM4865IBPX
    NONE
    NATIONAL SEMICONDUCTOR
    21 Feb 2006
    LM4865ITP
    LM4923LQ
    NATIONAL SEMICONDUCTOR
    16 Nov 2008
    LM4865ITPX
    LM4923LQ
    NATIONAL SEMICONDUCTOR
    16 Nov 2008

    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for LM4865.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for LM4865 is located at RoHS Status.

    Part Number(s)
    (NSID)
    Weight
    (milligrams)
    TypePinsMSL RatingPeak ReflowRoHS
    Status
    CAD SymbolsModelsPackage
    Marking
    Format
    LM4865M/NOPB

    LM4865M
    69.761
    70.001
    SOIC NARROW81
    1
    260
    235
    DetailDownloadN/A
    NSZXTT
    LM48
    65M
    LM4865MM/NOPB

    LM4865MM
    29.851
    30.002
    MINI SOIC81
    1
    260
    260
    DetailDownloadN/A
    ZXTT
    Z65
    LM4865MMX/NOPB

    LM4865MMX
    29.851
    30.002
    MINI SOIC81
    1
    260
    260
    DetailDownloadN/A
    ZXTT
    Z65
    LM4865MX/NOPB

    69.761
    70.001
    SOIC NARROW81260DetailDownloadN/A
    NSZXTT
    LM48
    65M

    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for LM4865.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for LM4865 is located at RoHS Status.

    CAD Symbols and Models
    Download LM4865 CAD Symbols
     Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LM4865MCS065247473430552700011568301341
    LM4865MMCS065247473430552700011568301341
    LM4865MMXCS065247473430552700011568301341
    LM4865MXCS065247473430552700011568301341

    Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

    For more information on Reliability Metrics, please click here.


    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for LM4865.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for LM4865 is located at RoHS Status.

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LM4865IBP
    NONE
    NATIONAL SEMICONDUCTOR
    06 Mar 2007
    LM4865IBPX
    NONE
    NATIONAL SEMICONDUCTOR
    21 Feb 2006
    LM4865ITP
    LM4923LQ
    NATIONAL SEMICONDUCTOR
    16 Nov 2008
    LM4865ITPX
    LM4923LQ
    NATIONAL SEMICONDUCTOR
    16 Nov 2008

    [Information as of 9-Feb-2012]