National Semiconductor | High-performance Analog

 

 LME49810   
200V Audio Power Amplifier Driver with Baker Clamp 		Click link to Download

Features

  • Very high voltage operation
  • Output clamp logic output
  • Thermal shutdown and mute
  • Customizable external compensation
  • Scalable output power

    • Description

    The LME49810 is a high fidelity audio power amplifier driver designed for demanding consumer and pro-audio applications. Amplifier output power may be scaled by changing the supply voltage and number of power transistors. The LME49810’s minimum output current is 50mA. When using a discrete output stage the LME49810 is capable of delivering in excess of 300 watts into a single-ended 8Ω load.

    Unique to the LME49810 is an internal Baker Clamp. This clamp insures that the amplifier output does not saturate when over driven. The resultant “soft clipping” of high level audio signals suppresses undesirable audio artifacts generated when conventional solid state amplifiers are driven hard into clipping.

    The LME49810 includes thermal shutdown circuitry that activates when the die temperature exceeds 150°C. The LME49810’s mute function, when activated, mutes the input drive signal and forces the amplifier output to a quiescent state.

    Key Specification
    ■  Wide operating voltage range ±20V to ±100V
    ■  Slew Rate 50V/μs (typ)
    ■  Output Drive Current 60mA (typ)
    ■  PSRR (f = DC) 110dB (typ)
    ■  THD+N (f = 1kHz) 0.0007 (typ)


    Applications

  • Guitar amplifiers
  • Powered studio monitors
  • Powered subwoofers
  • Pro audio
  • Audio video receivers
  • High voltage industrial applications




    • Typical Application
    *click for larger image


    		Connection Diagram
    click for larger image



    Typical Performance
    click for larger image


     

    ParametersValues
    THD 0.0007 %
    PSRR 110 dB
    Single/Dual/Quad Single
    Special Features Baker Clamp prevents output saturation
    THD Conditions No Load, BW=30kHz, VOUT=30Vrms, f=1kHz
    PSRR Conditions f=DC, Input Referred
    User Supply 100 Volt
    Supply Range +/-20V to +/-100V
    Max Input Bias Current 200 nA
    Output Current 60 mA
    Offset Voltage, typ 1 mV
    Slew Rate 50 Volts/usec
    Mono/Stereo Mono
    Temperature Min -20 deg C
    Temperature Max 85 deg C
    Channels 1 Channels
    Offset Voltage max, 25C 3 mV
    Automotive Yes

    Datasheets
    TitleSizeDateOther
    Language
    LME49810 200V Audio Power Amplifier Driver with Baker Clamp867
    Kbytes    		17-Sep-07   


    Application Notes
    TitleSizeDateOther
    Language
    AN-1850: Application Note 1850 LME49830TB Ultra-High Fidelity High Power Amplifier Reference Design817
    Kbytes    		2-Dec-08 中文


    Other Technical Documents
    TitleTypeDate
    Matching and Tuning Audio Amplifier Output Stability and Sound PerformanceExternal Article 2008-11-10

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LME49810TB/NOPB


    RoHS Status

    TO-247 SINGLE GAUGE    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide593
    AVNET-EMWorldwide120
    DIGI-KEYWorldwide389
    FARNELLEurope and Asia257
    MOUSERWorldwide142
    NEWARKAmericas135
    TAYLORAmericas593
    		$3.42 each at 1K+ pcsrail
    of
    24

    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 LME49810.

    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 LME49810 is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LME49810TB/NOPB

    		1419.729
    		TO-247 SINGLE GAUGE151NADetailN/AN/A
    		NSUZXYTTE#
    LME49810
    TB

    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 LME49810.

    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 LME49810 is located at RoHS Status.

    CAD Symbols and Models
    N/A
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LME49810TBVIP III H/HU202366007025546199351615

    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 LME49810.

    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 LME49810 is located at RoHS Status.

    [Information as of 3-Feb-2012]
    Copyright © 2011 National Semiconductor Corporation