Buy Stereo 3.7W Class D Audio Amplifier - MAX98306 ADA987 in Australia – Pakronics
 
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Buy Australia Stereo 3.7W Class D Audio Amplifier - MAX98306 , ADA_Breakout Boards - Adafruit, Pakronics Melbourne  in Australia - 1

Stereo 3.7W Class D Audio Amplifier - MAX98306

$16.49 AUD Inc. GST


SKU ADA987
Ships in 24 hours 1 units
Ships in 3 to 10 days 50 units

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This incredibly small stereo amplifier is surprisingly powerful - able to deliver 2 x 3.7W channels into 3 ohm impedance speakers. Inside the miniature chip is a class D controller, able to run from 2.7V-5.5VDC. Since the amp is a class D, its incredibly efficient (over 90% efficient when driving an 8Ω speaker at over a Watt) - making it perfect for portable and battery-powered projects. It has built in thermal and over-current protection but we could barely tell it got hot. This board is a welcome upgrade to basic "LM386" amps!

The inputs of the amplifier go through 1.0uF capacitors, so they are fully 'differential' - if you don't have differential outputs, simply tie the R- and L- to ground. The outputs are "Bridge Tied" - that means they connect directly to the outputs, no connection to ground. The output is a 360KHz square wave PWM that is then 'averaged out' by the speaker coil - the high frequencies are not heard. All the above means that you can't connect the output into another amplifier, it should drive the speakers directly.

Comes with a fully assembled and tested breakout board with 1.0uF input capacitors. We also include header to plug it into a breadboard, 3.5mm screw-terminal blocks so you can easily attach/detach your speakers, and a 2x4 header + jumper to change the amplifier gain on the fly. You will be ready to rock in 15 minutes! Speakers are not included, use any 3ohm or greater impedance speakers.
 

  • Output Power: 3.7W at 3Ω, 10% THD, 1.7W at 8Ω, 10% THD, with 5V Supply
  • Passes EMI limit unfiltered with up to 12 inches (30 cm) of speaker cable
  • High 83dB PSRR at 217Hz
  • Spread-Spectrum Modulation and Active Emissions Limiting
  • Five pin-selectable gains: 6dB, 9dB, 12dB, 15dB and 18dB. Select with a jumper or by setting the G and G' breakout pins (see schematic for breakout board showing gain pin settings for details)
  • Excellent click-and-pop suppression
  • Thermal and short-circuit/over-current protection
  • Low current draw: 2mA quiescent and 10uA in shutdown mode

Technical Details

Datasheet, schematic, and Fritzing library available in the product tutorial

Dimensions (without 0.1" header):

  • Length:28.25mm/1.11in
  • Width:24.15mm/0.95in
  • Height:3.03mm/0.12in
  • Weight:2.33g

Shipping rates Australia wide

Australia wide
Express Post* Regular Post Courier
Up to 500 gms $9.79 $6.75 $15.99
Up to 3 kg $15.00 $11.40 $15.99
Up to 5 kg $30.00 $17.00 $25.99
Above 5 kg
Estimated at checkout

    Shipping rates to New Zealand

    New Zealand
    Australia Post international service
    Up to 500 gms $18.00
    Up to 1 kg $30.00
    Above 1 kg
    Available on request

     

    FAQ:

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    Dispatch time

    All orders placed before 11 am AEST (Monday to Friday) will be processed on the same day.

    Note- Please make a note during purchase if you required any item urgently. 

    *Go to Australia post delivery time calculation to get various Australia post service in your area please use our shipping postcode Rosanna, 3084- https://auspost.com.au/parcels-mail/delivery-times.html?ilink=tools-open-deliv-times.

    Check Express shipping delivery coverage area at - http://auspost.com.au/parcels-mail/delivery-areas.html

    We ship all the products Australia wide - Including Darwin, Melbourne, Sydney, Tasmania, Adelaide, Brisbane, Perth, all metro and regional area where Australia post delivery network is available.