fm tuner copyright ? 2007 by silicon laboratories 1.8.07 adc adc si471x dsp dac dac vio sclk sdio control interface sen gpo rds ( si4711 ) gpo3/dclk rst gpo2/irq gpo1 ldo vdd gnd 2. 7 ? 5.5 v c1 22 nf lin rin tx ant txo din dfs afc rclk l1 120 nh rfgnd digital audio SI4710/11 fm radio transmitter for portable applications description the SI4710/11 is the industry's first 100% cmos fm transmitter single chip ic . the device leverages silicon labs? highly successf ul and proven si4700/01 fm receiver, and offers unmatched integration and performance allowing fm transmit to be added to any portable device by using a single chip. as with the si4700/01, the SI4710/11 offers industry leading size, performance, low power c onsumption, and ease of use. the SI4710/11?s digital integration reduces the required external components of traditional offerings, resulting in a solution requiring only an external inductor and bypass capacitor, and pcb space of approximately 15 mm 2 . high reliability in device manufacturing, improved quality, easy design-in, and software programmability ar e key advantages of the SI4710/11. the si4711 supports the european radio data system (rds) and the us radio broadcast data system (rbds) including all the symbol encoding, block synchronizati on, and error correction functions. using this feature, the si4711 enables data such as artist name and song title to be transmitted to an rds/rbds receiver. users are responsible to adjust their system?s radiated power levels to comply with local regulations on rf transmission (fcc, etsi, arib, etc.). features - worldwide fm band support (76?108 mhz) for transmit - requires only two external components - frequency synthesizer with integrated vco - digital stereo modulator - programmable pre-emphasis (50/75 s) - analog/digital audio interface - programmable reference clock - rds/rbds transmit encoder (si4711 only) - pcb loop antenna support with self calibrated capacitor tuning - programmable transmit level - programmable modulation - 2.7 to 5.5 v supply voltage - digital gain compression - integrated ldo regulator - 3 x 3 x 0.55 mm 20-pin qfn - pb-free and rohs compliant applications - cellular handsets/hands-free - mp3 players - portable audio/video players - wireless speakers/microphone - satellite digital audio radios - personal computers/notebooks
fm tuner copyright ? 2007 by silicon laboratories 1.8.07 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 SI4710/11 fm radio transmitter for portable applications parameter symbol test condition min typ max unit transmit frequency range f rf 76 ? 108 mhz programmable transmit output voltage, txo (maximum voltage) ? 115 ? dbv programmable transmit output voltage, txo (minimum voltage) ? 83 ? dbv transmit voltage stability ?1 ? 1 db transmit voltage step ? 1 2 db transmit channel edge power ? ? ?20 dbc transmit adjacent channel power ? ?30 ?26 dbc pre-emphasis time constant fmpe[1:0] = 00 70 75 80 us fmpe[1:0] = 01 45 50 54 us audio snr ? 63 ? db audio thd ? 0.1 0.5 % audio stereo separation 30 35 ? db sub carrier rejection ratio scr ? ?50 ?40 db input signal level (0 db) v ai 0.6 v rms input, v io = 1.8 v ? ? 0.636 v pk audio bandwidth (3 db) 20 ? 15 k hz audio imbalance ?1 ? 1 db powerup settling time from powerdown ? 110 ? ms selected electrical specifications pin assignments gnd pad 1 2 3 17 18 19 20 11 12 13 14 6 7 8 9 4 5 16 10 15 gpo2/irq vio rin dfs din gnd rst nc txo rclk sdio vdd nc rfgnd gpo3/dclk nc gpo1 lin sclk sen package information symbol millimeters symbol millimeters min nom max min nom max a 0.50 0.55 0.60 f 2.53 bsc a1 0.00 0.02 0.05 l 0.35 0.40 0.45 b 0.20 0.25 0.30 l1 0.00 ? 0.10 c 0.27 0.32 0.37 aaa ? ? 0.05 d 3.00 bsc bbb ? ? 0.05 d2 1.65 1.70 1.75 ccc ? ? 0.08 e 0.50 bsc ddd ? ? 0.10 e 3.00 bsc eee ? ? 0.10 e2 1.65 1.70 1.75
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