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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 8Omega; 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#39;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 #39;differential#39; - if you don#39;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 #39;averaged out#39; by the speaker coil - the high frequencies are not heard. All the above means that you can#39;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 4Omega;, 10% THD, 1.5W at 8Omega;, 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 0.5mA in shutdown (due to pullup resistor on SD pin)
Note:The terminal block included with your product may be blue or black.
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Informazioni aziendali
ROBOT DOMESTICI SRL - Via Cornelio Labeone, 70 - 00174 Roma (RM)
Partita IVA IT15791431008 - REA di Roma n. RM 1614298
CODICE FATTURAZIONE ELETTRONICA: KRRH6B9
Tel. (+39) 06 76971136 | e-mail: info@robot-domestici.it