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LM4838LQ

LM4838LQ Description

Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain

LM4838LQ Description

IC Amplifier AUDIO PWR 2.2W STER 28LLP

LM4838LQ Categories

Audio Power Amplifiers

LM4838LQ Manufacturer

National Semiconductor

LM4838LQ Datasheet (PDF)

LM4838LQ Datasheet
LM4838

LM4838LQ Price & Availability


Check LM4838LQ Price & Availability at Canics

LM4838LQ Features

  • DC Volume Control Interface
  • System Beep Detect
  • Stereo switchable bridged/single-ended power amplifiers
  • Selectable internal/external gain and bass boost
  • "Click and pop" suppression circuitry
  • Thermal shutdown protection circuitry

LM4838LQ Description

    The LM4838 is a monolithic integrated circuit that provides DC volume control, and stereo bridged audio power amplifiers capable of producing 2W into 4 with less than 1.0% THD or 2.2W into 3 with less than 1.0% THD.

    BoomerŪ audio integrated circuits were designed specifically to provide high quality audio while requiring a minimum amount of external components. The LM4838 incorporates a DC volume control, stereo bridged audio power amplifiers and a selectable gain or bass boost, making it optimally suited for multimedia monitors, portable radios, desktop, and portable computer applications.

    The LM4838 features an externally controlled, low-power consumption shutdown mode, and both a power amplifier and headphone mute for maximum system flexibility and performance.

    LM4838LQ Parameters

    StatusFull production
    PackageLLP
    Temperature Min (deg C)-40
    Temperature Max (deg C)85
    Pins28
    Pricing$1.44
    TypeClass AB
    Output Type2-Channel (Stereo) with Stereo Headphones
    FeaturesDepop, Mute, Shutdown, Thermal Protection, Volume Control
    SNR (dB)93
    Channels (Channels)2
    PSRR (dB)74
    CategoryIntegrated Circuits (ICs)
    FamilyAmplifiers - Audio
    THD (%).30
    User Supply (Volt)5
    Supply Range+2.7 - +5.5 V
    PowerAtFourOhms OnePercentTHD (Watt)2
    PowerAtEightOhms OnePercentTHD (Watt)1.10
    PowerAtEightOhms TenPercentTHD (Watt)1.50
    SNR ConditionsPout=1.1W
    PSRR Conditions120 Hz RL=8 Ohms
    THD ConditionsPo=1W @Vs=5V, 20Hz-20kHz
    SeriesBoomer®
    Package / Case28-LLP
    Voltage - Supply2.7 V ~ 5.5 V
    Max Output Power x Channels @ Load2.2W x 2 @ 3 Ohm; 95mW x 2 @ 32 Ohm
    Select parameters and click to see components with these parameters.

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    Keywords
    LM4838LQ Data Sheet LM4838LQ Spec LM4838LQ Application Notes LM4838LQ Distributor
    LM4838LQ Circuit LM4838LQ Reference LM4838LQ PDF LM4838LQ RoHS