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Stereo 2.1W Class D Audio Amplifier - TPA2012

SKU: ADA1552

$16.95 AUD, inc GST
$15.41 AUD, exc GST

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Stereo 2.1W Class D Audio Amplifier - TPA2012
16.95 AUD

SKU: ADA1552

$16.95 AUD, inc GST
$15.41 AUD, exc GST

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In stock, with a short lead time. 138 units dispatch in 4 to 8 days (in addition to the shipping method you choose). Our timing and stock is accurate. Delivery to you by Thu, 28th of Dec with Express Post within Australia.

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This incredibly small stereo amplifier is surprisingly powerful - able to deliver 2 x 2.1W channels into 4 ohm impedance speakers (@ 10% THD). Inside the miniature chip is a class D controller, able to run from 2.7V-5.5VDC. Since the amp is a class D, it's incredibly efficient (89% efficient when driving an 8Ω speaker at 1.5 Watt) - making it perfect for portable and battery-powered projects. It has built in thermal and over-current protection but Adafruit 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 ~300KHz 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. They also include a dual mini DIP switch for setting the amplifier gain on the fly, 3.5mm screw-terminal blocks so you can easily attach/detach your speakers, and some header in case you want to plug it into a breadboard. You will be ready to rock in 15 minutes! Speakers are not included, use any 4 ohm or 8 ohm impedance speakers.

  • Output Power: 2.1W at 4Ω, 10% THD, 1.4W at 8Ω, 10% THD, with 5V Supply
  • PSRR: 77 dB typ @ 217 Hz with 6 dB gain
  • Designed for use without an output filter, when wires are kept at under 2"-4" long
  • Four pin-selectable gains: 6dB, 12dB, 18dB and 24dB. Select with the onboard switches or by setting the G0 and G1 breakout pins (see schematic for breakout board showing gain pin settings for details)
  • Excellent click-and-pop suppression
  • Thermal shutdown protection
  • Independent channel shutdown
  • Low current draw: typ 6mA quiescent and 1.5uA in shutdown mode

Check out the tutorial for more details!

Stereo 2.8W Class D Audio Amplifier (8:55)

Technical Details

  • Dimensions (without 0.1" header): 22.96mm / 0.9" x 28.33mm / 1.11" x 4.97mm / 0.19"
  • Weight: 2.56g

Revision History: As of May 23, 2016 Adafruit have updated this breakout to use the TPA2012 rather than the TS2012. This is an overall-equivalent part with slightly less power output. You can use the two interchangeably for 99% of projects. The TS2012 has been discontinued!

Datasheets, schematics, PCB files, Fritzing object and more in the tutorial!

Documentation and Resources:

Product Comments

We deliver Australia-wide with these options:

  • $3 for Small Items (4-6 days, not tracked, only available on selected small items)
  • $6.95 for Standard Post (2-4 days, tracked)
  • $8.95 for Express Post (1-2 days, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region (only after we email you to notify your order is ready)

International Orders - the following rates are for New Zealand and will vary for other countries:

  • $11.49 for Pack and Track (3+ days, tracked)
  • $16.50 for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount might increment based on the weight of your order.

Our physical address:

Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

Please checkout our customer service page if you have other frequently asked questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.