Adafruit Stereo 2.1W Class D Audio Amplifier - TPA2012

Adafruit Stereo 2.1W Class D Audio Amplifier - TPA2012
- 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
- Excellent click-and-pop suppression
- Thermal shutdown protection
This incredibly small stereo amplifier is surprisingly powerful - able to deliver 2 x 2.1W channels into 4 ohm impedance speakers (@ 10 pct 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 pct efficient when driving an 8 ohm speaker at 1.5 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 ~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. We 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 4 ohn, 10 pct THD, 1.4W at 8 ohm, 10 pct 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

Note: The terminal blocks included with your product may be blue or black
Country USA
Brand Adafruit
Manufacturer Adafruit
Binding Personal Computers
ItemPartNumber 1552
Model 8541585571
UPCs 717520030386
EANs 0717520030386
ReleaseDate 0000-00-00

Country	USA
Brand	Adafruit
Manufacturer	Adafruit
Binding	Personal Computers
ItemPartNumber	1552
Model	8541585571
UPCs	717520030386
EANs	0717520030386
ReleaseDate	0000-00-00

Adafruit Stereo 2.1W Class D Audio Amplifier - TPA2012

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