National Semiconductor | High-performance Analog

 

 LM4980   
2 Cell Battery, 1mA, 42mW Per Channel High Fidelity Stereo Headphone Audio Amplifier for MP3 players from the PowerWise® Family		 Click link to Download

Features
  • 2-cell 1.5V to 3.3V battery operation
  • Unity-gain stable
  • "Click and pop" suppression circuitry for shutdown and power on/off transient with headphone loads
  • Active low micro-power shutdown
  • Thermal shutdown protection circuitry

    • Description

    The LM4980 is a stereo headphone audio amplifier, which when connected to a 3.0V supply, delivers 42mW to a 16 load with less than 1% THD+N. With the LM4980 packaged in the SD package, the customer benefits include low profile and small size. This package minimizes PCB area and maximizes output power.

    The LM4980 features circuitry that significantly reduces output transients ("clicks" and "pops") while driving headphones during device turn-on and turn-off without costly external additional circuitry. The LM4980 also includes an externally controlled low-power consumption active-low shutdown mode, and thermal shutdown. Boomer audio power amplifiers are designed specifically to use few external components and provide high quality output power in a surface mount package.

    Key Specification
    Output power (RL = 16, VDD = 3.0V, THD+N = 1%)42mW (typ)
    Quiescent current (VDD = 3V)1mA (typ)
    Micropower shutdown current0.1µA (typ)
    Supply voltage operating range1.5V < VDD < 3.3V
    PSRR @ 1kHz, VDD = 3.0V90dB (typ)
    PSRR @ 217Hz, VDD = 3.0V100dB (typ)


    Applications

  • Portable two-cell audio products
  • Portable two-cell electronic devices
  • Portable MP3 player/recorders




    • Typical Application
    click for larger image


    		Connection Diagram
    click for larger image



    Typical Performance
    click for larger image


     

    ParametersValues
    Supply Current 1 mA
    User Supply 3 Volt
    Power@ 16Ohms, 1% THD 0.042 Watt
    Power@ 32Ohms, 1% THD 0.028 Watt
    THD 0.02 %
    PSRR 90 dB
    Channels 2 Channels
    Shutdown Type Low
    Supply Min 1.5 Volt
    Supply Max 3.3 Volt
    Exposed DAP No
    Output Configuration OCL Virtual Ground
    Temperature Min -40 deg C
    Temperature Max 85 deg C
    Automotive Yes
    PowerWise Yes
    THD Conditions RL = 32ohm, POUT = 10mW, f = 1kHz
    PSRR Conditions VRIPPLE = 200mVP-P sine wave
    Supply Range +1.5 - +3.3V
    Capless Headphone Yes

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM4980SD/NOPB

    LM4980SD

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    RS COMPONENTSWorldwide2
    		$2.55 each at 100+ pcsreel
    of
    1000
    LM4980SDX/NOPB

    LM4980SDX

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$2.55 each at 100+ pcsreel
    of
    4500

    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 LM4980.

    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 LM4980 is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LM4980SD/NOPB

    LM4980SD
    		21.112
    21.182
    		LLP101
    1    		260
    260    		DetailDownloadN/A
    		ZXYTT
    L4980
    LM4980SDX/NOPB

    LM4980SDX
    		21.112
    21.182
    		LLP101
    1    		260
    260    		DetailDownloadN/A
    		ZXYTT
    L4980

    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 LM4980.

    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 LM4980 is located at RoHS Status.

    CAD Symbols and Models
    Download LM4980 CAD Symbols
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LM4980SDCMOS811372573017745002503519220
    LM4980SDXCMOS811372573017745002503519220

    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 LM4980.

    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 LM4980 is located at RoHS Status.

    [Information as of 9-Feb-2012]
    Copyright © 2011 National Semiconductor Corporation