automotive am/fm tuner copyright ? 2011 by silicon laboratories 11.10.11 ami lna xtal1 fmxip wxi fmi lna clk gen xtal2/ rclk dsp fmo fmagc1 fmagc2 cntrl iout mxr pkd qout iqfs iqclk dout dfs dclk rstb fmxin a1 sda a0 lout/ mpxout rout if pkd rds adc adc dac dac SI476X 0/90 vio2 rf pkd rf pkd scl lna rf pkd reg rfreg vio1 intb r l xout rfgnd icin icip icon icop SI476X high-performance automotive am/fm radio receiver and hd radio tuner description the SI476X radio receiver family employs 100% rf cmos technology to bring outstanding receiver performance to the automotive infotainment industry, which demands high performance and quality. the SI476X receiver family supports worldwide fm and am radio reception. additional variants support weather band, shortwave, longwave frequencies, and dual antenna fm phase diversity reception. the SI476X incorporates a digital processor for the european radio data system (rds) and the north american radio broadcast data system (rbds) including all required symbol decoding, block synchronization, error detection, and error correction functions. all odd-numbered variants in the family support am/fm hd radio channel reception with digital (i 2 s) baseband i/q outputs for interface to a hd radio demodulator/decoder. the family leverages silicon lab oratories? patented digital architecture, delivering superior rf performance and interference rejection. the proven digital techniques provide excellent sensitivity in weak signal environments, and superb selectivity and inter-modulation immunity in strong signal environments. the solution offers dynamic am/fm channel bandwidth control, auto-calibrated digi tal tuning, and proven am/fm seek functionality based on multiple signal quality and band parameters. the family offers highly flexible and advanced audio processing including am/fm noise blanking, programmable soft mute, fm multi-path mitigation, fm stereo-mono blend, and fm hi-cut. in addition, the SI476X provides an integrated clock oscillator or accepts a reference clock and an i 2 c-compatible, 2-wire control interface. the SI476X receiver system specifies a minimal bill of materials, resulting in a very small board space requirement and making the solution ideal for any automotive application from sing le tuner radios to multiple tuner radios addressing companion tmc/af reception/ scanning. features - worldwide fm band support (64?108 mhz) - am/fm hdr support - worldwide am band support (520?1710 khz) - advanced rds/rbds demodulator/decoder - digital fm mpx decoder - integrated fm active splitter - addresses companion af/rds data receiver - advanced am/fm noise blankers - dynamic am/fm channel bandwidth control - advanced fm hi-cut control - programmable fm stereo-mono blend - programmable am/fm soft mute - full suite of signal metrics: rssi, snr, multi-path interference, frequency offset, adjacent channel strength, usn - analog and digital (i 2 s) audio outputs - digital (i 2 s) baseband am/fm i/q - analog fm mpx output - low-if architecture - eliminates expensive 10.7 mhz if ceramic filters - on-chip am/fm agc with integrated resistor and varactor banks - eliminates external pin diode attenuators and ? varactors - 1.5 to 5 v power supplies - qfn 40, 6 x 6 x 0.85 mm - pb-free/rohs compliant - aec-q100 qualified applications - oem automotive infotainment systems - aftermarket car radio systems - oem automotive pnd docking system
automotive am/fm tuner copyright ? 2011 by silicon laboratories 11.10.11 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 SI476X high performance automotive am /fm radio receiver and hd radio (hdr) tuner selected electrical specifications parameter test conditions min typ max units ambient temperature ?40 25 85 c analog supply voltage 5 v (va) 4.5 5 5.5 v digital supply voltage 3.3 v (vd) 2.7 3.3 3.6 v interface supply voltage (vio1) 1.7 3.3 3.6 v interface supply voltage (vio2) 1.2 3.3 3.6 v analog supply current ? 130 ? ma digital supply current ? 60 ? ma interface supply current (vio1) ? 90 ? a interface supply current (vio2) ? 20 ? a fm input frequency 64 108 mhz tune time ?0.9 ? ms af scan time ? 7.5 ? ms seek time/channel ? 20 ? ms max frequency deviation ? 150 ? khz am input frequency 510 1710 khz seek time/channel ? 55 ? ms pin assignment iqclk 23 iqfs 24 iout 25 qout 26 din 27 dfs 28 dclk 29 blend/nc 30 wxi/nc 8 fmi 7 fmo 6 rfreg 5 rfgnd 4 fmxin 3 fmxip 2 nc 1 nc 10 ami 9 vio1 19 vd 20 a0 11 intb 12 dclk2 13 dout2 14 rstb 15 sda 16 scl 17 dfs2 18 fmagc1 40 fmagc2 39 icin 38 icip 37 dacref 36 xtal1 35 rclk/ xtal2 34 rout 33 lout/ mpxout 32 va 31 dbyp 21 vio2 22 gnd pad package information symbol millimeters symbol millimeters min nom max min nom max a 0.80 0.85 0.90 e 6.00 bsc a1 0.00 0.02 0.05 e2 3.95 4.10 4.25 b 0.18 0.25 0.30 l 0.30 0.40 0.50 d 6.00 bsc l1 0.03 0.05 0.08 d2 3.95 4.10 4.25 aaa 0.10 e 0.50 bsc bbb 0.10
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