{"id":6263,"date":"2026-06-12T10:29:38","date_gmt":"2026-06-12T10:29:38","guid":{"rendered":"https:\/\/materialparts.com\/pam8302a\/"},"modified":"2026-06-12T10:29:38","modified_gmt":"2026-06-12T10:29:38","slug":"pam8302a","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/pam8302a\/","title":{"rendered":"PAM8302A"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The PAM8302A from Diodes Incorporated is a 2.5W mono Class-D audio power amplifier with high efficiency and low EMI. Operating from 2.0V to 5.5V, it requires no output filter in most applications and features a shutdown mode drawing less than 1uA in SOT-23-6 package.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Output Power<\/td>\n2.5W at 5V into 4 Ohm (THD=10%)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n2.0V to 5.5V<\/td>\n<\/tr>\n
Efficiency<\/td>\nUp to 90%<\/td>\n<\/tr>\n
THD+N<\/td>\n0.2% at 1W, 1kHz, 5V, 8 Ohm<\/td>\n<\/tr>\n
PSRRR<\/td>\n75 dB at 1kHz<\/td>\n<\/tr>\n
SNR<\/td>\n95 dB<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0625\u064a\u0642\u0627\u0641 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n<1 uA<\/td>\n<\/tr>\n
\u0646\u0648\u0639 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\nFilterless Class-D (BTL)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 to 85 C<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOT-23-6<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Filterless Class-D architecture eliminates output LC filter<\/li>\n
  • 2.5W output into 4 Ohm speaker at 5V<\/li>\n
  • High 90% efficiency eliminates need for heatsink<\/li>\n
  • Pop-and-click suppression circuitry<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Portable Bluetooth speakers<\/li>\n
    • Tablet and smartphone speaker amplifiers<\/li>\n
    • Toy and novelty audio devices<\/li>\n
    • LCD TV and monitor speakers<\/li>\n
    • Intercom and PA systems<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The PAM8302A from Diodes Incorporated is a 2.5W mono Class-D audio power amplifier with high efficiency and low EMI. Operating from 2.0V to 5.5V, it requires no output filter in most applications and features a shutdown mode drawing less than 1uA in SOT-23-6 package. Key Specifications Output Power 2.5W at 5V into 4 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,33],"tags":[],"chip_brand":[193],"class_list":["post-6263","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-led-driver-ics","chip_brand-diodes-inc"],"acf":{"brief_explanation":"2.5W mono filterless Class-D audio amp, 2-5.5V, 90% efficiency, SOT-23-6","date_code":"","package_case":"SOT-23-6 (2.9 x 2.8 x 1.45mm)","in_stock":10041,"datasheet":"https:\/\/www.diodes.com\/assets\/Datasheets\/PAM8302A.pdf","price":"$0.35 @ 1ku","product_introduction":"The PAM8302A from Diodes Incorporated is a 2.5W mono Class-D audio power amplifier that operates from a single 2.0V to 5.5V supply. Its filterless architecture eliminates the need for an external LC output filter in most applications, reducing BOM cost and board space. With up to 90% efficiency, the device requires no heatsink even at maximum output power. Pop-and-click suppression circuitry ensures clean power-on\/off transitions. The SOT-23-6 package provides a compact footprint for space-constrained portable audio applications.","working_principle":"The PAM8302A employs a filterless Class-D PWM modulation scheme. **Modulation**: The analog input signal is compared against a high-frequency triangular waveform (typically 250kHz) to generate a PWM signal. The duty cycle of the PWM output is proportional to the instantaneous input voltage. **Output Stage**: A BTL (Bridge-Tied Load) H-bridge output drives the speaker differentially, doubling the voltage swing compared to single-ended amplifiers. The high-frequency PWM carrier is above the audible range and is filtered by the inherent inductance of the speaker coil. **Filterless Operation**: The speaker itself acts as a low-pass filter due to its inductive nature, recovering the audio signal from the PWM carrier. The remaining high-frequency energy is dissipated as heat in the speaker coil without audible effect. **EMI Management**: Spread-spectrum modulation or controlled slew rates minimize EMI emissions, allowing filterless operation to pass FCC\/CE radiated emission limits with short speaker wires.","pin_description":"
      Pin<\/th>Name<\/th>Description<\/th><\/tr>
      1<\/td>IN+<\/td>Positive differential audio input<\/td><\/tr>
      2<\/td>VDD<\/td>Power supply (2.0V to 5.5V)<\/td><\/tr>
      3<\/td>SD<\/td>Shutdown control (high=active, low=shutdown)<\/td><\/tr>
      4<\/td>OUT+<\/td>Positive BTL output to speaker<\/td><\/tr>
      5<\/td>GND<\/td>Ground<\/td><\/tr>
      6<\/td>OUT-<\/td>Negative BTL output to speaker<\/td><\/tr><\/table>","application_scenarios":"
      • Portable Speakers: Battery-powered Bluetooth speakers delivering 2.5W from a single Li-ion cell<\/li>
      • Mobile Devices: Tablet and smartphone speaker boost amplifiers for improved audio output<\/li>
      • Toy Audio: Sound effect amplifiers in electronic toys running from 2-3 AA batteries<\/li>
      • DIY Audio: Compact audio amplifier modules for Arduino and Raspberry Pi projects<\/li>
      • Intercom Systems: Voice output amplification in door phone and security intercom units<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        PAM8302AADCR<\/td>Diodes Inc<\/td>SOT-23-6, higher temp grade<\/td><\/tr>
        MAX98306ETD+T<\/td>Maxim<\/td>Stereo, 3.7W, TQFN-16<\/td><\/tr>
        TPA2005D1DRBR<\/td>TI<\/td>1.4W, 2.5-5.5V, MSOP-8<\/td><\/tr>
        NS4150<\/td>Nuvoton<\/td>3W, filterless, SOP-8<\/td><\/tr>
        XPT8871<\/td>XinPu<\/td>2W, filterless, SOP-8, low cost<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6263","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=6263"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6263\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6263"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6263"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6263"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6263"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}