{"product_id":"pam8302-2-5w-class-d-single-channel-solo-audio-amplifier-board-amp-module","title":"PAM8302 2.5W Class D Single Channel Solo Audio Amplifier Board Amp Module","description":"\u003cp style=\"text-align: justify; line-height: 150%;\" class=\"MsoListParagraph\"\u003ePAM8302 2.5W Single Channel Class D Audio Power Amplifier Board is an ultra-compact, highly efficient mono audio amplification module designed exclusively for low-power, portable sound projects. Utilizing an advanced filterless Class-D architecture, this miniature amplifier drives small speakers with astonishing clarity without requiring bulky output filters or external heat sinks. Consequently, hardware developers extensively use this module in battery-operated handheld devices, miniature arcade builds, and custom robotics requiring a loud, clear voice. It expertly delivers up to 2.5W of maximum output power into a 40 impedance load while operating reliably from a standard 5V logic supply. Furthermore, its extremely low quiescent current and dedicated shutdown pin significantly extend battery life during periods of audio inactivity. Therefore, whether you are soldering together a custom pocket synthesizer or adding sound effects to a prop replica, this amplifier offers exceptional acoustic punch in a microscopic footprint.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilterless Class-D Design:\u003c\/strong\u003e The innovative architecture allows you to connect the speaker directly to the output pins, therefore heavily reducing external component count and saving PCB space.\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\u003cstrong\u003eHigh Efficiency Operation:\u003c\/strong\u003e Boasting up to 90% operating efficiency, the module minimizes heat buildup and drastically extends the runtime of battery-powered systems.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\u003cstrong\u003eDifferential Input Ready:\u003c\/strong\u003e The isolated A+ and A- audio inputs effectively reject common-mode noise, consequently delivering a cleaner audio signal from noisy microcontrollers.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\u003cstrong\u003eLow Power Shutdown Mode:\u003c\/strong\u003e Integrating a dedicated shutdown pin enables the host device to put the amplifier to sleep, drawing merely 1µA of current.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\u003cstrong\u003eBuilt-In Protections:\u003c\/strong\u003e Features comprehensive thermal overload and robust short-circuit protection to prevent the IC from sudden catastrophic failure.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Voltage (VDD):\u003c\/strong\u003e 2.0 V to 5.5 V DC (Optimal 5.0 V)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Output Power:\u003c\/strong\u003e 2.5 W (Mono, at 40 load, 5.5 V supply, 10% THD)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupported Speaker Impedance:\u003c\/strong\u003e 4 2 to 8 Ω (Delivers 1.5W into 8 Ω)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplification Class:\u003c\/strong\u003e Class-D mono digital amplification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal-to-Noise Ratio (SNR):\u003c\/strong\u003e \u0026gt; 95 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Harmonic Distortion (THD+N): \u003c\/strong\u003e≈ 0.1% (at 1 W output into 4 Ω)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiescent Current: \u003c\/strong\u003e≈ 4 mA (Operating) \/ 1 μΑ (Shutdown)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMechanical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoard Material:\u003c\/strong\u003e High-quality FR4 Fiberglass PCB\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\u003cstrong\u003eOnboard Control:\u003c\/strong\u003e Certain module variations feature a tiny onboard trim potentiometer for manual volume\/gain adjustment.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\u003cstrong\u003eConnection Type:\u003c\/strong\u003e Requires soldering wires or standard 2.54mm pin headers to the plated through-holes.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\u003cstrong\u003eCooling Requirement: \u003c\/strong\u003eNeeds zero external cooling; the IC manages its own thermal load efficiently.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePinout and Wiring:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVIN \/VCC:\u003c\/strong\u003e Connect this pin to a clean 2.0V to 5.5V DC power source.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGND:\u003c\/strong\u003e Connect this strictly to the common ground of your power supply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA+ \/ IN+:\u003c\/strong\u003e Solder the positive audio signal wire from your microcontroller or DAC here.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA-\/IN-:\u003c\/strong\u003e Solder the negative differential audio signal here. However, if using a single-ended audio source, tie this pin directly to GND.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSD (Shutdown):\u003c\/strong\u003e Pulling this pin to logic LOW disables the amplifier. Leave floating or pull HIGH to operate normally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOUT+ \/ OUT-:\u003c\/strong\u003e Wire these output terminals directly to your speaker coil. Do NOT connect either of these pins to ground.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCommonly Used in:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom Synthesizers:\u003c\/strong\u003e Driving a small built-in speaker for pocket-sized Arduino or Raspberry Pi-based digital instruments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicro Arcade Cabinets:\u003c\/strong\u003e Providing the loud, punchy retro sound effects required for miniature gaming consoles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTalking Robots: \u003c\/strong\u003eServing as the clear vocal amplification module for interactive, battery-powered robotic toys specifically.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGPS Navigation Devices: \u003c\/strong\u003eEnhancing the volume of verbal turn-by-turn directions in custom automotive dash displays.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedical Alarm Systems: \u003c\/strong\u003eEmitting sharp, unmistakable warning tones in portable medical monitoring equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuseum Displays:\u003c\/strong\u003e Providing localized, low-power audio narration when viewers trigger a proximity sensor consequently.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e1 x PAM8302 2.5W Single Channel Class D Audio Power Amplifier Board\u003c\/p\u003e\n\u003cp\u003e1 x 2.54mm Pitch Male Header Pin Strip\u003c\/p\u003e","brand":"Indian Hobby Center","offers":[{"title":"Default Title","offer_id":43407676932139,"sku":"2663","price":99.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/6796\/1387\/files\/6115byW3XnL._SX522.jpg?v=1773915591","url":"https:\/\/www.indianhobbycenter.com\/products\/pam8302-2-5w-class-d-single-channel-solo-audio-amplifier-board-amp-module","provider":"Indian Hobby Center","version":"1.0","type":"link"}