-
ARDUINO
- RASPBERRY
- MICRO:BIT
- KITS
-
COMPONENTES
-
Resistências Elétricas
- Kit de Resistências
- Resistências 1% 125mW
- Resistencias 1% 250mW
- Resistencias 1% 500mW
- Resistencias 1% 600mW
- Resistências 1% 1W
- Resistencias 1% 2W
- Resistências 5% 125mW
- Resistencias 5% 250mW
- Resistencias 5% 500mW
- Resistências 5% 1W
- Resistencias 5% 2W
- Resistencias 5% 3W
- Resistências Potência
- Resistências Várias
- Redes Resistencias
- Termistores
- Trimmers
- Trimmers 3296
- Joysticks
- Botões
- Potenciometro slider
- Potenciometros Rotativos
- Potenciometro Multivolta
- Potenciometros Motorizados
- MODULOS
- SENSORES
- ROBÓTICA
- IMPRESSÃO 3D
-
FERRAMENTAS
Ferramenta Eletronica
- Acessórios
- Analisador Logico
- Alicates para Eletronica
- Berbequins
- Caixas Arrumação
- Chaves de Precisão
- Chaves Ajuste
- Extensões
- Fita Isoladora
- Fonte de Alimentação
- kit Ferramentas
- Lupa Eletronica
- Aparelhos de Medida, Multímetros e Outros
- Osciloscopios
- Pinças para Eletrónica
- Pontas de Prova
- Material Soldadura
- Spray de Limpeza
- Tornos e Suportes
- PROMOÇÕES
- CHEQUE PRENDA
Stereo 3.7W Class D Audio Amplifier - MAX98306
Stereo 3.7W Class D Audio Amplifier - MAX98306
This incredibly small stereo amplifier is surprisingly powerful - able to deliver 2 x 3.7W channels into 3 ohm impedance speakers.
Descrição
Stereo 3.7W Class D Audio Amplifier - MAX98306
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
Technical Details - 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