★Using TPA3116D2 chip, 4.5V-26V wide voltage input, high efficiency class D operation, advanced modulation system configuration, multiple switching frequencies, AM interference prevention, master-slave mode synchronization
✅ Power amplifier chip with more than 90% of the power efficiency and low idle loss characteristics.
✅ High-level modulation system configuration, advanced level reduces the number of components, integrated self-protection circuit, including overvoltage, undervoltage, overheating, DC detection and short circuit protection, heat-resistant package.
✅ With surface mounted capacitances.
✅ European style 3P wiring terminals.
✅ Big heatsink chip, convection type heat dissipation.
Information of these amplifier board: the operating voltage of these mini PAM8403 digital power amplifier modules are 2.5-5.5V, the power supply voltage should not exceed 5.5V, and positive and negative power sources cannot be connected reversed; Suitable for speakers with 4-8 ohms, 4 ohms are recommended, and the power of the speakers are 2-8 W
Nice performance: adopt quality material, the class D power amplifier board is not easy to heat and affects the sound quality, and there is no need to add heat sink; It's small in size, has built-in noise-cancelling circuitry, moreover, the module features with short-circuit, over-current protection and over-temperature protection
Dual-channel: these PAM8403 digital amplifier boards can provide 3W (left channel) + 3W (right channel) output power and single 5V power supply, directly driven 4 ohms, 8 ohms small speakers, bring you nice using experience
Wide range of use: these digital power amplifier boards can be applied in LCD TV, monitor, laptop, portable speaker, portable DVD player, game machine, cell phone and more
Package contents: you will get 20 pieces PAM8403 digital power amplifier board, sufficient quantity can meet you various needs, you can use the 5V power supply of the computer USB port, 5V power supply of the mobile phone charger USB port, or use the lithium batter power supply
Parameters: DROK audio amplifier board working voltage is DC 8-26V, can be powered by 12V, 24V; output power is 15W stereo (24V 8ohm)/ 10W stereo (12V 8 ohm), if connect 4 ohm or 2 ohm speaker, the power will be automatically limited to 15W.
Artificial Material: this New-designed stereo amplifier module is made of noble black immersion gold circuit board, PAM8620 chip, imported KEMET speaker capacitor, large-capacity filter capacitor for channels. Besides, we customized black copper terminal blocks and gold-plated audio input terminal blocks for this new amplifier module.
High Performance: the class D power amp module is with high efficiency of over 90%, general harmonic distortion noise is less than 0.2%, low quiescent current and noise suppression.
Safe Protection: the 2 channel amp board is designed with input reverse connection protection, short circuit protection, over heat protection, overcurrent protection, overvoltage protection, undervoltage protection; what's more, EMI is allowed to pass.
Additional Function: it is available to connect external mute function (MUTE: High level mute, factory default low level); available to add an external Shutdown (SD: the chip will be Shutdown at low electricity level, factory defaults high electricity level.
This product uses TPA3118 as the main chip, and the power supply range is as wide as 8-24V. The load of 2 ohm speakers can reach up to 60W output under 24V power supply. The circuit adopts PBTL mode, so can realize low resistance high power, large internal resistance speakers can be connected in parallel to achieve high power output.
Supply voltage: DC 8-24V. Input current: 3A Max.
Output power: 1*60W. Frequency response range: 35hz-88khz.
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 8Ω 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!
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 to ground. The output is "Bridge Tied" - that means the output pins connect directly to the speaker pins, no connection to ground.
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.
Maxim announces the MAX98357 digital input Class D audio power amplifiers, enabling designers to implement compact, efficient plug-and-play solutions at a cost-effective price.
In addition to its small form factor, the device is capable of achieving a 3.2W Class AB amplifier with Class D amplifier efficiency, resulting in excellent high fidelity sound for a variety of product applications.
The MAX98357 Pulse Code Modulation (PCM) plug-and-play speaker amplifiers take advantage of the flexibility of Maxim's pinout. 35 different clocks and 128 digital audio formats can be automatically configured with a single power supply.
For superior sound quality, the device uses a high noise immunity digital input with high jitter tolerance. It also provides excellent electromagnetic interference suppression, allowing long-line connected speakers without the need for external filtering.
Suitable for microcontrollers or development board systems with I2S audio output such as Raspberry Pi, Arduino and ESP32.