{"product_id":"si4825-a10-full-band-radio-receiver-sop16-am-fm-sw-analog-tuning-5pack","title":"SI4825-A10 Full-Band Radio Receiver IC — SOP-16, AM\/FM\/SW, Analog Tuning (5-Pack)","description":"\u003ch2\u003eSI4825-A10 Full-Band Radio Receiver IC — SOP-16, AM\/FM\/SW, Analog Tuning (5-Pack)\u003c\/h2\u003e\u003cp\u003eThe SI4825-A10 from Silicon Laboratories is a single-chip full-band radio receiver IC supporting AM (520–1710kHz), FM (64–108MHz), and shortwave (2.3–21.85MHz) reception. Unlike digital-tuned receivers, it uses analog potentiometer tuning for a classic radio feel, making it ideal for DIY portable radios, retro-style FM receivers, and shortwave radio projects. Operating from 2.0–3.6V, it integrates the complete RF front-end, IF filter, demodulator, and audio output in a single SOP-16 package.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-16 (SMD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAM Band\u003c\/td\u003e\n\u003ctd\u003e520–1710kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFM Band\u003c\/td\u003e\n\u003ctd\u003e64–108MHz (covers worldwide FM bands)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShortwave Band\u003c\/td\u003e\n\u003ctd\u003e2.3–21.85MHz (11 SW bands)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning Method\u003c\/td\u003e\n\u003ctd\u003eAnalog (external potentiometer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e2.0–3.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Output\u003c\/td\u003e\n\u003ctd\u003eDifferential analog (drives headphones directly)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eNo I²C\/SPI — fully analog control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose SI4825-A10?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue analog tuning\u003c\/strong\u003e — potentiometer-controlled frequency for a classic radio experience, no microcontroller needed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAM + FM + 11 SW bands\u003c\/strong\u003e — complete world-band radio coverage in one IC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-chip solution\u003c\/strong\u003e — integrates RF, IF, demodulator, and audio output, minimal external components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.0–3.6V operation\u003c\/strong\u003e — runs directly from 2×AA batteries or a single Li-ion cell\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect headphone drive\u003c\/strong\u003e — differential audio output drives 32Ω headphones without an external amplifier\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible With \/ Common Use Cases\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIY portable AM\/FM\/SW radio\u003c\/strong\u003e: Minimal BOM — IC + antenna + potentiometer + headphones\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetro-style FM radio kit\u003c\/strong\u003e: Analog dial tuning for vintage radio aesthetics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShortwave receiver\u003c\/strong\u003e: 11 SW bands covering international broadcasts (BBC, VOA, etc.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery-powered radio\u003c\/strong\u003e: 2×AA or single Li-ion powered portable receiver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectronics education\u003c\/strong\u003e: RF receiver design without complex RF engineering\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: Does SI4825-A10 require a microcontroller to operate?\u003c\/strong\u003e\u003cbr\u003eA: No — this is a key advantage of the SI4825. It uses analog potentiometers for band selection and frequency tuning, so no Arduino or MCU is needed. This makes it ideal for simple, low-component-count radio designs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between SI4825-A10 and SI4825-B20?\u003c\/strong\u003e\u003cbr\u003eA: The SI4825-A10 covers AM\/FM\/SW with analog tuning. The SI4825-B20 adds I²C digital control for frequency setting via microcontroller. Choose A10 for pure analog designs, B20 for MCU-controlled digital tuning.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What antenna do I need for FM and shortwave reception?\u003c\/strong\u003e\u003cbr\u003eA: For FM: a 75cm wire antenna (quarter-wave at ~100MHz) connected to the FM antenna pin. For AM: a ferrite bar antenna (loopstick) connected to the AM differential input pins. For shortwave: a 1–3m wire antenna provides good reception across the SW bands.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5× SI4825-A10 Full-Band Radio Receiver IC (SOP-16)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991457485035,"sku":"\u003cnone\u003e","price":7.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/si4825-a10-csr-si4825a10-sop16-full-band-radio-ic.webp?v=1761796233","url":"https:\/\/keszoox.com\/products\/si4825-a10-full-band-radio-receiver-sop16-am-fm-sw-analog-tuning-5pack","provider":"Keszoox","version":"1.0","type":"link"}