Adafruit Mono 2.5W Class D Audio Amplifier – PAM8302

Adafruit Mono 2.5W Class D Audio Amplifier – PAM8302

5,05 IVA INCLUSA

Availability: 5 disponibili COD: AD2130
Quantity discounts
1-2 5,05
3-5 4,90
6+ 4,80
  • Descrizione
  • Informazioni aggiuntive

Descrizione

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

Dimensions (without 0.1″ header):

  • 15mm x 24mm x 2mm / 0.6″ x 0.9″ x 0.08″
  • Weight: 1.4g
INFO TECNICHE: 
Pagina del Produttore 
PAM8302A datasheet

 

Informazioni aggiuntive

Peso 0.05 kg
Dimensioni 5 × 1 × 3 cm
Brand

Hai appena aggiunto questo prodotto al carrello:

English EN Italian IT