501987 Amplificatore Stereo 3.7W Classe D - MAX98306

Amplificatore Stereo 3.7W Classe D - MAX98306

Micro-amplificatore in classe D - 3.7W di potenza Stereo su 3 ohm
Categorie
Prezzi IVA inclusa
€ 11,82 Prezzo
€ 9,69 + VAT

 

Dettagli

This incredibly small stereo amplifier is surprisingly powerful - able to deliver 2 x 3.7W channels into 3 ohm impedance speakers. Inside the miniature chip is a class D controller, able to run from 2.7V-5.5VDC. Since the amp is a class D, its incredibly efficient (over 90% efficient when driving an 8Ω speaker at over 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. 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 360KHz 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 header to plug it into a breadboard, 3.5mm screw-terminal blocks so you can easily attach/detach your speakers, and a 2x4 header + jumper to change the amplifier gain on the fly. You will be ready to rock in 15 minutes!Speakers are not included, use any 3ohm or greater impedance speakers. 

  • Output Power: 3.7W at 3Ω, 10% THD, 1.7W at 8Ω, 10% THD, with 5V Supply
  • Passes EMI limit unfiltered with up to 12 inches (30 cm) of speaker cable
  • High 83dB PSRR at 217Hz
  • Spread-Spectrum Modulation and Active Emissions Limiting
  • Five pin-selectable gains: 6dB, 9dB, 12dB, 15dB and 18dB. Select with a jumper or by setting the G and G' breakout pins (see schematic for breakout board showing gain pin settings for details)
  • Excellent click-and-pop suppression
  • Thermal and short-circuit/over-current protection
  • Low current draw: 2mA quiescent and 10uA in shutdown mode

Dimensions (without 0.1" header): 

  • Length:28.25mm/1.11in
  • Width:24.15mm/0.95in
  • Height:3.03mm/0.12in
  • Weight:2.33g

 

MAX98306 Datasheet
Schematic for breakout board showing gain pin settings

Specifiche

Part. No. : 987

Tags prodotto

Usa gli spazi per tag separati. Usa virgolette singole (') per frasi.

Questions on Amplificatore Stereo 3.7W Classe D - MAX98306

No questions asked yet

Fai una domanda (Registrati oppure Esegui il Login ).
Fai una domanda (Registrati oppure Esegui il Login ).
  1. STA540 Audio Amplifier Kit

    709612 STA540 Audio Amplifier Kit

    Kit da montare di un amplificatore stereo che utilizza l'integrato STA540. Una volta completato il kit, ottenete un amplificafalse
    Tasse escluse:
    € 30,72
    IVA inclusa:
    € 37,48
      Confronta
  2. Stereo 20W Class D Audio Amplifier - MAX9744

    807895 Stereo 20W Class D Audio Amplifier - MAX9744

    This slim little board has a class D amplifier onboard that can drive 2 channels of 4-8 ohm impedance speakers at 20W each. Pfalse
    Tasse escluse:
    € 22,40
    IVA inclusa:
    € 27,33
      Confronta