digital set top box tuner copyright ? 2 015 by silicon laboratories 2.26.2015 i adc q adc 0 / 90 low-if freq synth ldo output interface xosc xtal_i pga control interface xtal_o xout SI2144 antenna input gpio dsp filter agc dtv demod av soc addr scl sda lif if agc rf agc pga rf out zps loop through 3.3 v 1.8 v 1.8 v SI2144 worldwide digital set-top box tuner description the SI2144 is the industry's most advanced digital set-top box (stb) tuner supporting all worldwide cable and terrestrial tv standards for digital tv reception. like the previous generations of silic on labs' digital tv tuners, the SI2144 maintains very high linearity and low phase noise to deliver superior picture quality compared to competing silicon tuners. available in an industry-leading 3x3 mm qfn package, the SI2144 delivers the lowest-cost, most design-friendly and area-efficient digital stb solution available today. a fully-integrated rf front-end eliminates the need for an external balun, lnas, saw filters, and inductive power supply filtering. also in cluded is a fully-integrated loop-through function with a zero-power mode switch (zps) for additional board area and bom savings. an on-chip 1.8 v ldo enables single-supply operation, while a dual-supply option offers add itional system flexibility. the SI2144?s excellent immunity to lte interference and harmonic rejection mixer with outstanding immunity to wi-fi interference eliminate th e need for external filtering. for advanced digital broadcast standards with high-order constellations, such as dvb-t2 and dvb-c2, the SI2144's superior integrated phase no ise delivers industry-leading reception performance. the SI2144 delivers a higher number of received stations compared to other silicon tuners. incorporating worldwide field experience from prior gener ations of digital tuners in mass production, the SI2144 delivers the highest tolerance to real-world reception conditions. features - worldwide digital stb tuner - atsc/qam, dvb-t2/t/c2/c, isdb-t/c, dtmb - 1.7 mhz, 6 mhz, 7 mhz, 8 mhz, and 10 mhz chan- nel bandwidths - conforms to nordig, dtg, and arib - lowest bom for a silicon digital set top box tuner - no balun, saw filters, or wire-wound inductors - integrated loop-through with zero-power mode - integrated lnas and complete tracking filters - best-in-class real-world reception - industry-leading phase noise performance - high immunity to wi-fi and lte interference - low power consumption - 3.3 v and 1.8 v power supplies - integrated 1.8 v ldo for 3.3 v single-supply ? operation - single low-if (lif) output to soc and/or demodulator - standard cmos process technology - smallest footprint for a silicon digital tv tuner - 3x3 mm, rohs-compliant 24-pin qfn applications - digital tuner modules - digital cable and terrestrial stb - digital pvr, dvd and blu-ray disc recorder
digital set top box tuner copyright ? 2 015 by silicon laboratories 2.26.2015 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 SI2144 worldwide digital set-top box tuner selected electrical specifications (v ddh = 3.3 v, v ddl = 1.8 v, t a = 25 c) parameter test condition typ unit supply voltage 1.8 and 3.3, or only 3.3 v total power consumption external 1.8 v supply, lt disabled 486 mw rf input frequency range 42 to 870 mhz nf, cable mode vhf-l1 (42?106 mhz) 4.8 db vhf-l2 (107?247 mhz) 2.8 db vhf-h (248?470 mhz) 3.5 db uhf (471?870 mhz) 4.8 db input return loss* cable mode 8 db composite triple beat ?56 dbc composite second order ?68 dbc lo phase noise at 860 mhz 1 khz | 10 khz | 100 khz | 1 mhz ?100 | ?100 | ?105 | ?132 dbc/hz lo integrated phase noise at 860 mhz dsb: 125 hz to 4 mhz 0.25 (?47) rms (dbc) lif output center frequency channel bw = 6 mhz | 7 mhz | 8 mhz 4 to 7 | 4.5 to 6.5 | 5 to 6 mhz lif differential output voltage programmable 0.5 to 2.0 v ppd loop-through output (china dvb-c mode) rf frequency range (lt only) 42 to 870 mhz lt output return loss (active) 8 db lt noise figure (active) max gain 7.1 db lt gain active mode 2.9 db zero-power mode ?2.2 db *note: includes all connector, pcb and front-end circui t losses at the f-connector input of the SI2144 evb. selection guide part # description SI2144 worldwide digital set top box tuner for atsc/qam, dvb-t2/t/c2/c, isdb-t/c, dtmb pin assignments 1 2 7 8 9 10 11 12 13 20 19 18 gnd pad lif_p lif_n vddh gnd vddl xout xtal_i xtal_o gnd vddh vddh rf_ref rf_ip gnd rf_in rf_out addr gpio1 17 16 15 14 3 4 5 6 21 22 24 23 agc2 gnd scl sda gpio2 agc1 3x3 mm qfn-24 package information ? a 0.80 0.85 0.90 mm d, e 3.00 bsc mm e 0.40 bsc mm e1 0.45 bsc mm j, k 1.60 1.70 1.80 mm
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