am/fm receiver copyright ? 2010 by silicon laboratories 2.24.2010 SI4830 broadcast mechanical t uning am/fm radio receiver description the SI4830 is the first wheel-tuned digital cmos am/fm radio receiver ic that integr ates the complete receiver function from antenna input to audio output. leveraging silicon laboratories' proven and patented digital low intermediate frequency (low-if) receiver architecture, the SI4830 delivers superior rf performance and interference rejection in both am and fm bands. additionally, the digital core provides advanced audio conditioning for all environments, removing pops, clicks, and loud static in variable signal conditions. the superior control algorithm integrated in SI4830 provides easy and reliable control interface while eliminating all the manual tuned external components used in traditional solutions. like other successful audio products from silicon labs, SI4830 offers unmatched integration and pcb space savings with minimum external components and less than 20 mm 2 of board area, excluding the antenna inputs. the high integration and complete system production test simplifies design-in, increases system quality, and improves manufacturability. the receiver has very low power consumption, runs off two aaa batteries, and delivers the performance benefits of digital tuning to the legacy analog radio market. features - worldwide fm band support (64?108 mhz) - worldwide am band support (520?1710 khz) - selectable support for all am/fm regional bands - wheel-tuned / mechanical-tuned frequency support - mechanical volume control + off/on - excellent real-world performance - digital radio with leading low-if architecture - automatic frequency control (afc) - stereo/mono + tuning and stereo indicator - en55020 compliant - minimal bom components w/ no manual alignment - no external mcu required - two aaa batteries with 2.0 to 3.6 v supply voltage (t = 25 c) - wide range of ferrite loop sticks and air loop antennas - 24-pin ssop package - rohs compliant applications - table and portable radios - stereos - mini/micro systems - boomboxes - clock radios - modules - entertainment systems - toys, lamps, and any application needing an am/fm radio adc adc SI4830 dsp dac dac rout lout afc tune1/2 rfgnd lna ami agc reg vdd 2.0~3.6v xtal osc fmi 0/90 stereo xtalo station band control interface rst xtali am ant fm ant
am/fm receiver copyright ? 2010 by silicon laboratories 2.24.2010 silicon laboratories and silicon labs are trademarks of silicon laboratories inc. other products or brandnames mentioned her ein are trademarks or registered tr ademarks of their respective holders SI4830 broadcast mechanical t uning am/fm radio receiver selected fm electr ical specifications selected am elect rical specifications parameter symbol conditions min typ max units input frequency f rf 64 ? 108 mhz sensitivity (s+n)/n = 26 db ? 2.2 ? v emf input ip3 ? 105 ? dbv emf adjacent channel selectivity 200 khz ? 50 ? db alternate channel selectivity 400 khz ? 65 ? db audio output voltage ? 80 ? mv rms audio s/n ? 53 ? db audio thd ? 0.1 0.5 % parameter symbol conditions min typ max units input frequency f rf 520 ? 1710 khz sensitivity (s+n)/n = 26 db ? 25 ? v emf audio s/n ? 56 ? db audio output voltage ? 60 ? mv rms audio thd ? 0.1 ? % antenna inductance 180 ? 450 h package information table 1. package dimensions dimension min nom max dimension min nom max a ? ? 1.75 l 0.40 ? 1.27 a1 0.10 ? 0.25 l2 0.25 bsc b 0.20 ? 0.30 0 ? 8 c 0.10 ? 0.25 aaa 0.20 d 8.65 bsc bbb 0.18 e 6.00 bsc ccc 0.10 e1 3.90 bsc ddd 0.10 e 0.635 bsc notes: 1. all dimensions shown are in milli meters (mm) unless otherwise noted. 2. dimensioning and tolerancing per ansi y14.5m-1994. 3. this drawing conforms to the jedec solid state outline mo-137, variation ae. 4. recommended card reflow profile is per the jedec/ipc j-std-020 specification for small body components. pin assignments lout rout dbyp vdd1 tune2 xtalo stereo band 1 2 3 4 5 6 7 8 9 10 11 12 tune1 vdd2 station nc nc xtali rsv1 fmi rfgnd rsv2 gnd nc nc rst gnd ami 24 23 22 21 20 19 18 17 16 15 14 13
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