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PAM8603A (Not Recommended for new design)

NRND = Not Recommended for New Design

3W Stereo Class D with DC Volume Control, Anti-Saturation and Headphone Driver

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The PAM8603A is a 3W, Class-D audio amplifier with headphone amplifier. Advanced 64-Step DC volume control minimizes external components and allows speaker volume control and headphone volume control. PAM unique antisaturation technology which detects output signal clip due to the over level input signal suppress the output signal clip automatically. Also the antisaturation function can adapt the output clip caused by power supply voltage down with battery. It offers low THD+N, to produce highquality sound reproduction. The new filterless architecture allows the device to drive the speaker directly, without low-pass output filters which will save system cost and PCB area. With the same numbers of external components, the efficiency of the PAM8603A is much better than Class-AB cousins. It can extend the battery life thus be ideal for portable applications. The PAM8603A is available in a SSOP-24 package.


  • 3W Output at 10% THD with a 4Ω Load and 5V Power Supply
  • Filterless, Low Quiescent Current and Low EMI
  • Low THD+N
  • 64-Step DC Volume Control
  • Headphone Output Function
  • Unique Anti-Saturation Function
  • Superior Low Noise
  • Low Pop Noise
  • Efficiency Up to 90%
  • Short Circuit Protection
  • Thermal Shutdown
  • Few External Components to Save the Space and Cost
  • Pb-Free Package
  • Application(s)

  • LCD Monitors / TV Projectors
  • Notebook Computers
  • Portable Speakers
  • Portable DVD Players, Game Machines
  • VoIP/Speakers Phones
  • Product Specifications

    Product Parameters

    Anti-Sat Yes
    Compliance (Only Automotive supports PPAP) No
    BTL Yes
    Class-D or AB D
    Efficiency (%) 89
    Gain Max 24
    Gain Min -75
    Headphone Out Yes
    IQ (mA) 10
    Maximum VDD (V) 5.5
    Minimum VDD 2.5
    Minimum VDD (V) 2.5
    Mono or Stereo Stereo
    Power Limit No
    Power/CH (W) @ THD=1% 2.4
    Power/CH (W) @ THD=10% 3
    PSRR 75
    AEC Qualified No
    SE No
    SNR 85
    Special Features N/A
    Volume/ Gain DC

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