{"id":7936,"date":"2019-09-14T12:42:02","date_gmt":"2019-09-14T12:42:02","guid":{"rendered":"https:\/\/opponix.com\/?post_type=product&p=7936"},"modified":"2021-10-17T06:08:08","modified_gmt":"2021-10-17T06:08:08","slug":"cjmcu-832-pam8302-2-5w-single-channel-class-d-audio-power-amplifier-development-board-for-arduino","status":"publish","type":"product","link":"https:\/\/opponix.com\/product\/cjmcu-832-pam8302-2-5w-single-channel-class-d-audio-power-amplifier-development-board-for-arduino\/","title":{"rendered":"CJMCU-832 PAM8302 2.5W Single Channel Class D Audio Power Amplifier Development Board For Arduino"},"content":{"rendered":"

Description:<\/strong><\/p>\n

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 8\u03a9 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! CJMCU<\/p>\n

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\u00a0 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. CJMCU<\/p>\n

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!<\/p>\n

Features:<\/strong><\/p>\n

– Output Power: 2.5W at 4\u03a9, 10% THD, 1.5W at 8\u03a9, 10% THD, with 5.5V Supply
\n– 50dB PSRR at 1KHz
\n– Filterless design, with ferrite bead + capacitors on output.
\n– Fixed 24dB gain, onboard trim potentiometer for adjusting input volume.
\n– Thermal and short-circuit\/over-current protection
\n– Low cur<\/p>\n","protected":false},"excerpt":{"rendered":"

Description: This super small mono amplifier is surprisingly powerful – able to deliver up to 2.5 Watts into 4-8 ohm impedance speakers. 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