worldwide digital tv tuner ic copyrigh t ? 2011 by silicon laboratories 8.2.11 si2146 worldwide digital tv tuner ic description the si2146 integrates a complete tv tuner supporting all worldwide digital terrestrial and cable tv standards. leveraging silicon labs? field proven digital low-if architecture, the si2146 maintains the unmatched performance and design simplicity of the si2143 while further reducing footprint size and bill of materials cost. no external lnas, tracking filters, wirewound inductors or saw filters are used. compared with competing silic on tuners and discrete mopll-based tuners, the si2146 delivers superior picture quality and a higher number of received stations in crowded and near/far real-world reception conditions. the high linearity and low noise rf front-end delivers superior blocking performance and higher sensitivity in the presence of strong undesired channels and interference. the si2146 integrates the complete signal path from antenna input to if output. compared to traditional discrete mopll-based tuners, the si2146 eliminates hundreds of external components including external lnas, tracking filter vara ctors and inductors (unlike competing silicon tuners), and saw filters, resulting in the simplest, lowest-cost bom for a digital tv tuner. i nterfacing the si2146 se amlessly with the si2165 dvb-t/c demodulator creates a complete terrestrial and cable dvb-t/c receiver. features - worldwide digital tv tuner - atsc/qam, dvb-t/t2/c, isdb-t/c, dtmb - 42-1002 mhz frequency range - compliance to a/74, no rdig, d-book, c-book, arib, opencable? specifications - best-in-class real-world reception - exceeds mopll-based tuners - highly integrated , lowest bom - no saw filters or wirewound inductors required - integrated lnas and complete tracking filters - no alignment, tuning or calibration required - digital low-if architecture - integrated channel select filters - flexible output interface - dlif to digital tv demodulator or soc - 3.3 and 1.8 v power supplies - standard cmos process technology - 5 x 5 mm, 32-pin qfn package - rohs compliant applications - digital ?-nim and full-nim - idtv (integrated digital tv) - digital terrestrial and cable stb - digital pvr and dvd recorder dsp filter atv demod i adc q adc 0 / 90 low-if freq synth rf agc ldo if agc output interface xosc xtal_i pga pga control interface xtal_o xout bclk agc si2146 rf_in rf_ip antenna input balun av soc rstb addr scl sda intb dlif dsp filter 3.3 v 1.8 v gpio dtv demod
worldwide digital tv tuner ic copyrigh t ? 2011 by silicon laboratories 8.2.11 silicon laboratories and silicon labs are trademarks of silicon laboratories inc. other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders. si2146 worldwide digital tv tuner ic selected electrical specifications (v dd_h = 3.3 v, v dd_l = 1.8 v, v dd_d = 1.8 v, t a = 25 c) parameter test condition typ unit supply voltage 1.8 and 3.3 v total power consumption (tbd) vhf bands | uhf bands 0.9 | 0.85 w rf input frequency range 42 to 1002 mhz noise figure* max gain 4.0 db wideband iip3* n18,36; max rf gain +18 dbm inband iip3* n1,2; max rf gain ?10 dbm lo phase noise at 860 mhz 125 hz | 250 hz | 1 khz | 10 khz | 100 khz ?83 | ?91 | ?96 | ?95 | ?104 dbc/hz lo integrated phase noise ? at 860 mhz dsb: 125 hz to 4 mhz 0.4 (?43) deg. rms (dbc) adjacent channel attenuation n1; rf input* to dlif out put 80 db dlif output center frequency channel bw = 6 mhz | 7 mhz | 8 mhz 4 to 7 | 4.5 to 6.5 | 5 to 6 mhz dlif differential output voltage swing programmable 0.5 to 2.0 v ppd *note: measured at the f-connector input of the si2146 reference design and in cludes all connector, pcb, and front-end circuit losses. pin assignments gnd_pad 17 27 28 29 30 18 19 31 32 20 rf_in xout vdd_l rf_shld rf_shld rf_ip vdd_h xtal_i 16 15 21 22 23 24 bclk rstb 6 7 8 5 dlif_p dlif_n nc vdd_h 13 14 12 11 9 10 1 2 3 4 25 26 gnd sda gnd vdd_d scl vdd_s vdd_io nc addr dlif_agc nc vdd_h gpio1 intb/gpio2 xtal_o gnd gnd gnd 5 x 5 mm qfn-32 package symbol min nom max unit a 0.80 0.85 0.90 mm d, e 5.00 bsc mm e 0.50 bsc mm selection guide part # description si2146 worldwide digital tv tuner ic for atsc/qam, dvb-t/t2/c, isdb-t/c, dtmb
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