# Stereo 2.1W Class D Audio Amplifier - TPA2012

**Type:** Product page · **SKU:** ADA1552 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/stereo-2-8w-class-d-audio-amplifier-ts2012.html ([markdown](https://core-electronics.com.au/stereo-2-8w-class-d-audio-amplifier-ts2012.html.md))

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...

## Pricing

- **Price:** $17.55 (inc GST) — $15.95 AUD, exc GST
- **Quantity discounts:** 10+ $15.47 (exc GST) · 50+ $15.15 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 24 and Aug 27.

## Description

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 8O 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 4O, 10% THD, 1.4W at 8O, 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](https://learn.adafruit.com/adafruit-ts2012-2-8w-stereo-audio-amplifier/downloads) 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!](https://learn.adafruit.com/adafruit-ts2012-2-8w-stereo-audio-amplifier/)

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!](https://learn.adafruit.com/adafruit-ts2012-2-8w-stereo-audio-amplifier/downloads)

 ![](https://core-electronics.com.au/attachments/localcontent/rohs_icon_8216055e11.jpg)- [TPA2012 Datasheet](https://core-electronics.com.au/attachments/localcontent/tpa2012d2_111563699cd.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/1/5/1552-03.jpg)