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987

Development Board, Class D Audio Amplifier Module, Stereo, 3.7W, Breadboard Compatible

ADAFRUIT 987

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Manufacturer:
ADAFRUIT ADAFRUIT
Manufacturer Part No:
987
Newark Part No.:
98Y0255
Technical Datasheet:
987   Datasheet
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Technical Docs (1)

Product Overview

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! 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 3O, 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.
  • Excellent click-and-pop suppression
  • Thermal and short-circuit/over-current protection
  • Low current draw: 2mA quiescent and 10uA in shutdown mode
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