MCM Electronics

Stereo 3.7W Class D Amplifier - MAX98306 By Adafruit Industries (987) MCM Part #83-17705

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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 8O 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!
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.

Specifications Top

  • Output Power: 3.7W at 3O, 10% THD, 1.7W at 8O, 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.
  • Excellent click-and-pop suppression
  • Thermal and short-circuit/over-current protection
  • Low current draw: 2mA quiescent and 10uA in shutdown mode

Part Numbers
MCM Part #:83-17705
Adafruit Industries Part #:987
Package Specifications & Dimensions
Weight:0.0625 lbs.
RoHS Comp:No
Warranty:90 days
Need to Return?
Length:3.5 in.
Width:2.5 in.
Height:0.25 in.
Shipping Information
Extra Shipping Charge:No
Drop Ship:No

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