LM4930   
Audio Subsystem with Stereo Headphone & Mono Speaker Amplifiers 		Click link to Download

Features
  • 16-bit resolution 48kHz stereo DAC
  • 16-bit resolution 8kHz voice codec
  • I2S digital audio data serial interface
  • Two-wire serial control interface
  • PCM voice audio data serial interface
  • 25mW/channel stereo headphone amplifier
  • 330mW mono 8 amplifier (at AVDD = 3.0V)
  • 32-step volume control for audio output amplifiers
  • No snubber networks or bootstrap capacitors are required by the headphone or hands-free amplifiers
  • Digital sidetone generation with adjustable attenuation
  • Gain controllable headphone amp, mono BTL amp, mic preamp
  • Available in the 36-bump micro SMD and 44-lead LLP packages

    • Description

    The LM4930 is an integrated audio subsystem that supports voice and digital audio functions. The LM4930 includes a high quality I2S input stereo DAC, a voice band codec, a stereo headphone amplifier and a high-power mono speaker amplifier. It is primarily designed for demanding applications in mobile phones and other portable devices.

    The LM4930 features an I2S serial interface for full range audio, a 16-bit PCM bi-directional serial interface for the voice band codec and an two-wire interface for control. The full range music path features an SNR of 86dB with a 16-bit 48kHz input. The stereo DAC can also be used while the voice codec is in use. The headphone amplifier delivers 25mWRMS to a 32 single-ended stereo load with less than 0.5% distortion (THD+N) when AVDD = 3V. The mono speaker amplifier delivers up to 330mW into an 8 load with less than 1% distortion when AVDD = 3V.

    The LM4930 employs advanced techniques to reduce power consumption, to reduce controller overhead and to eliminate click and pop. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. It is, therefore, ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement.

    Key Specification
    PLS OUT at AVDD = 5.0V, 8 
    1% THD+N1W (typ)
    PLS OUT at AVDD = 3.0V, 8 
    1% THD+N330mW (typ)
    PH/P OUT at AVDD = 3.0V, 32 
    0.5% THD+N25mW (typ)
    Supply voltage range 
    DVDD (Note 8)2.6V to 4.5V
    AVDD (Note 8)2.6V to 5.5V
    Total shutdown current2µA (typ)
    PSRR at 217Hz, AVDD = 3V50dB (typ)


    Applications

  • Mobile Phones
  • Mobile/low power audio appliances
  • PDAs

    		•



                                                  LM4930
    Drag-Select for Table Reset Graph

    Typical Application
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    		Connection Diagram
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    Typical Performance
    click for larger image


     

    ParametersValues
    Power @ 5V 8Ohms, 1% THD 1 Watt
    HP THD+N 0.07 %
    Speaker PSRR 55 dB
    HP PSRR 50 dB
    Speaker SNR 86 dB
    HP SNR 86 dB
    Audio Mux Yes
    Audio Mode Control I2C
    Supply Range +2.6 - +5 V
    Temperature Min -30 deg C
    Temperature Max 85 deg C
    Mono Analog Inputs 1
    Stereo Analog Inputs 0
    Digital Audio Ports 2
    Loudspeaker Type Class AB
    Loudspeaker Outputs 1
    Headphone Type Cap Coupled
    AEC Q-100 Automotive Grade Undefined
    A/D Channels 1 Channels

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM4930ITL/NOPB

    RoHS Status

    MICRO SMD    		Full production
    Lead Time: 8 weeks

    Samples
    DistributorRegionQty
    DIGIKEYWorldwide495
    FUTUREWorldwide250
    		$3.95 each at 1K+ pcsreel
    of
    250
    LM4930LQ/NOPB
    LM4930LQ

    RoHS Status

    LLP    		Full production
    Lead Time: 12 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide250
    DIGIKEYWorldwide0
    		$3.95 each at 1K+ pcsreel
    of
    250
    LM4930LQX/NOPB
    LM4930LQX

    RoHS Status

    LLP    		Full production
    Lead Time: 16 weeks

     
    DistributorRegionQty
    DIGIKEYWorldwide0
    		$3.95 each at 1K+ pcsreel
    of
    2500

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

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

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

    Part Number(s)
    (NSID)    		DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM4930LQBD
    		LM4930LQBD Evaluation BoardFull production


     
    DistributorRegionQty
    DIGIKEYWorldwide0
    		$300.00 each1



    National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C2) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/quality/green. Lead free products are RoHS compliant.

    Lead Free product status is available through the search tool located here

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LM4930ITL/NOPB
    		12.661
    		MICRO SMD
    		361260DetailDownloadN/A
    		XVG
    I B6
    LM4930LQ/NOPB
    LM4930LQ
    		114.606
    115.004
    		LLP
    		442
    2    		260
    260    		DetailDownloadN/A
    		NS
    UZXYTTE#
    L4930LQ
    LM4930LQX/NOPB
    LM4930LQX
    		114.606
    115.004
    		LLP
    		442
    2    		260
    260    		DetailDownloadN/A
    		NS
    UZXYTTE#
    L4930LQ

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

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

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

    Design Tools
    TitleSizeDate
    Audio Amplifier Digital Control Interface Evaluation Board Software  

    CAD Symbols and Models
    Download LM4930 CAD Symbols
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LM4930ITLCMOS70184060010890004309006723
    LM4930LQCMOS70184060010890004309006723
    LM4930LQXCMOS70184060010890004309006723

    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/packaging/leadfree.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

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

    [Information as of 5-Sep-2010]
    Copyright © 2010 National Semiconductor Corporation