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Adafruit Mono 2.5W Class D Audio Amplifier – PAM8302 Adafruit

Original price was: $ 3,95.Current price is: $ 2,37.

SKU: mode_4430454276 Category: Arduino > Audio Tags: Amplifiers/Sound, Audio, updated 12-22

Description
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This super small mono amplifier is surprisingly powerful – able to deliver up to 2.5 Watts into 4-8 ohm impedance speakers. Inside the miniature chip is a class D controller, able to run from 2.0V-5.5VDC. Since the amp is a class D, its very efficient (over 90% efficient when driving an 8Ω speaker at over half 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. There’s even a volume trim pot so you can adjust the volume on the board down from the default 24dB gain. This board is a welcome upgrade to basic “LM386” amps!

The A+ and A- inputs of the amplifier go through 1.0uF capacitors, so they are fully ‘differential’ – if you don’t have differential outputs, simply tie the Audio- pin to ground. The output is “Bridge Tied” – that means the output pins connect directly to the speaker pins, no connection to ground. The output is a high frequency 250KHz 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. We also include header to plug it into a breadboard and a 3.5mm screw-terminal blocks so you can easily attach/detach your speaker. You will be ready to rock in 15 minutes! Speaker is not included, use any 4 ohm or greater impedance speaker.

Output Power: 2.5W at 4Ω, 10% THD, 1.5W at 8Ω, 10% THD, with 5.5V Supply
50dB PSRR at 1KHz
Filterless design, with ferrite bead + capacitors on output.
Fixed 24dB gain, onboard trim potentiometer for adjusting input volume.
Thermal and short-circuit/over-current protection
Low current draw: 4mA quiescent and 1uA in shutdown mode

TECHNICAL DETAILS

PAM8302A datasheet
EagleCAD PCB files on GitHub
Fritzing object available in Adafruit Fritzing library

Dimensions (without 0.1″ header):

15mm x 24mm x 2mm / 0.6″ x 0.9″ x 0.08″
Weight: 1.4g

Fast Shipping and Professional Packing

We offer a broad range of shipping options due to our long-standing partnerships with UPS, FedEx and DHL. Our warehouse staff is highly trained and will pack the goods according to our precise and exact specifications. Before shipping, all goods will be thoroughly examined and securely secured. We deliver to hundreds of thousands of customers every day in different countries. The fact that we are determined to become the largest online retailer in the world is evident. Warehouses and distribution centres can be located in Europe as well as the USA.

Note: Orders with more than one item will be assigned a separate processing time for each item.

Before shipment, all ordered items will be thoroughly examined. Most orders are now shipped within 48 hrs. Delivery is expected to take between 3 and seven days.

Returns

Stock is dynamic, and cannot be fully controlled by us because of the involvement of multiple parties including the factory and our warehouse. This means that the actual stock could alter at any time. It's possible that the stocks could be depleted after your order has been processed.

The policy is for 30 days. Unfortunately, if 30 days have passed from the date you purchased the item, we will not be able to provide a refund or exchange.

The item must not be in use and must be in the original packaging. You must have the item in the original packaging.

Adafruit Mono 2.5W Class D Audio Amplifier – PAM8302 Adafruit

TECHNICAL DETAILS

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