PAM8403, 5V Dual-Channel Stereo Audio Amplifier Module.

(5 customer reviews)

  • On-Board IC: PAM8403
  • Module Pin count: 9
  • IC type: Stereo Audio Amplifier
  • Manufacturer: Generic
  • The package contains: 1 x PAM8403 audio amp module.


Additional Info
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  • Module Overview  

     This Audio Amplifier Module is based on PAM8403 which is a 3W, class-D audio amplifier. It offers low THD+N, allowing it to achieve high-quality sound reproduction. The new filterless architecture allows the device to drive the speaker directly, requiring no low-pass output filters, thus saving system cost and PCB area. With the same numbers of external components, the efficiency of the PAM8403 is much better than that of Class-AB cousins. It can extend the battery life, which makes it well-suited for portable applications.

    Key Features: 

    • Low THD+N.
    • Thermal Shutdown.
    • Superior Low Noise.
    • Short Circuit Protection.
    • High amplification efficiency 90%.
    • Works with 2.5V-5v power supply.
    • Output Power: 3 W + 3 W at 4 ohm.
    • Good sound quality & noise suppression.
    • Can use a computer USB power supply directly.
    • Filterless, Low Quiescent Current, and Low EMI.
    • Can directly drive 4 Ohm/8 Ohm small speakers.
    • Dual-channel stereo output 3 w + 3 w power Class D.
    • 3W Output at 10% THD with a 4Ω Load and 5V Power Supply.
    • Small Size, 2.11 x 1.85 cm BOB can easily fit in a variety of products.

    Safety Measures:  

    NOTE: Violating these safety measures may lead to total product damage and such products are not eligible for refund or replacement.

    • Input audio should be via shielded wire for the best performance.
    • Use properly filtered and regulated power supply.
    • Take care not to short speaker wires else IC will get damaged.
    • Make sure the power supply never exceeds 5.5V else IC will get damaged.
    • The module should be connected with the speaker before it’s powered on, otherwise, the module may damage easily.

    Recommended Operating Conditions:  

                            Parameter                            Rating                            Unit 
                 Supply Voltage Range                           3.3 to 5.5                                V 
         Operation Temperature Range                          -40 to +85                               °C 



    • It’s better to add a ferrite chip bead at the outgoing line of the speaker for suppressing the possible electromagnetic interference.
    • Using a Li-Ion battery without BMS and charge controller will probably damage the module. Therefore, it’s recommended to use a Li-Ion battery with a TP4050 module or Buck converter, or four Ni-MH (Nickel Metal Hydride) rechargeable batteries or 3 dry or alkaline batteries.
    • One should not make the input signal too large. A large signal can cause the clipping of the output signal when increasing the volume. This will damage the IC because of the big gain of the PAM8403.
    • When testing the PAM8403 module by using a resistor instead of a speaker as the output load, the test results, e.g. THD or efficiency, will be worse than those of using the speaker as load.


    SKU: DSM116 Categories: , Tags: , , ,

    Based on 5 reviews

    5.0 overall

    Add a review

    1. Umesh Kumar (verified owner)

      Small board but unbelievable sound good product

      Umesh Kumar

    2. Prasun Patra (verified owner)

      Very Good product. Best for diy project.

      Prasun Patra

    3. sayanik Mandal (verified owner)

      Really very good in sound quality and very good build quality. Must buy

      sayanik Mandal

    4. Paresh Vora (verified owner)

      Nice sound inputs and reached in few days(I request to roboelements that don’t change the shipping in few days to shipping in long days) overall circuit is very good

      Paresh Vora

    5. Umar faruq (verified owner)

      Nice amplifier sound and cheap price thank you robo elements

      Umar faruq