Audio Amplifier Module A25
  • Audio Amplifier Module A25
  • Audio Amplifier Module A25
  • Audio Amplifier Module A25

Audio Amplifier Module A25

SKU 317990019
The amp is stereo efficient, digital amplifier power stage for driving speakers up to 2x30W/8Ω
$12.00
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Description
The amp is stereo efficient, digital amplifier power stage for driving speakers up to 2x30W/8Ω. The high efficiency of the amp allows it to do 2x30W/8Ω without external heat sink. This module has standby and mute function, so Arduino can control it how and when it works.

Features:

  • Volume control
  • Audio output (L/R)
  • Audio input
  • Mute interface
  • 3.5 earphone input
  • Power supply

Specification:

  • SNR      90(db) 
  • DR       0.01% 
  • Input impedance@ Voltage    3Ω@6V-19V    8Ω@6V-24V         
  • size       60mm*55mm*15mm
  • 25W + 25W continuous output power at THD = 10% with RL = 8 Ω and VCC = 26 V
  • Wide-range single-supply operation (4.5 - 26 V)
  • High efficiency (η = 90%)
  • Four selectable, fixed gain settings of nominally 20dB, 26dB, 32dB, and 36dB
  • Differential inputs minimize common-mode noise
  • Standby and mute features
  • Short-circuit protection
  • Thermal overload protection
  • Externally synchronizable
  • ECOPACK®, environmentally-friendly package

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Questions and Answers
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how can I control the audio volume level with the Arduino (not only mute option...) ?
on Dec 04,2016
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Hello, you need a analog signal to control the volume, so a DAC module needed. I am sorry that we don't have one at Bazaar. 

I find one at Adafruit: https://www.adafruit.com/product/935

Thanks. 

on Dec 05,2016 16:02 PM
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