Si2124 Digital Terrestrial Set-Top Box Tuner Description Features Built upon six generations of field-proven TV tuner technology, the Si2124 is Silicon Labs’ first digital set-top box (STB) tuner designed specifically for digital terrestrial STB applications. Like the previous generations of Silicon Labs' digital TV tuners, the Si2124 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 Si2124 delivers the lowest-cost, most design-friendly and area-efficient digital terrestrial 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 included 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 additional system flexibility. The Si2124’s excellent immunity to LTE interference and harmonic rejection mixer with outstanding immunity to Wi-Fi interference eliminate the need for external filtering. For advanced digital broadcast standards with high-order constellations, such as DVB-T2, the Si2124's superior integrated phase noise delivers industry-leading reception performance. The Si2124 delivers a higher number of received stations compared to other silicon tuners. Incorporating worldwide field experience from prior generations of digital tuners in mass production, the Si2124 delivers the highest tolerance to real-world reception conditions. - Digital terrestrial STB tuner - ATSC, DVB-T2/T, ISDB-T - 1.7 MHz, 6 MHz, 7 MHz, 8 MHz, and 10 MHz channel bandwidths - Conforms to Nordig, DTG, and ARIB - Lowest BOM for a digital terrestrial STB 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 terrestrial STB - Digital PVR, DVD and Blu-Ray disc recorder ZPS I ADC PGA ANTENNA INPUT Q ADC PGA RF AGC 0 / 90 LDO FREQ SYNTH IF AGC DSP FILTER LOW-IF 3.3 V 1.8 V 1.8 V XOSC AGC LIF DTV DEMOD SDA SCL ADDR AV SoC GPIO XOUT XTAL_I XTAL_O Digital Terrestrial Set Top Box Tuner Copyright © 2015 by Silicon Laboratories CONTROL INTERFACE RF OUT OUTPUT INTERFACE Si2124 LOOP THROUGH 4.3.15 Si2124 Digital Terrestrial Set-Top Box Tuner Selected Electrical Specifications (VDDH = 3.3 V, VDDL = 1.8 V, TA = 25 °C) Parameter Test Condition Typ Supply voltage Total Power Consumption 1.8 and 3.3, or only 3.3 V 486 mW External 1.8 V supply, LT disabled RF Input Frequency Range NF, Terrestrial Mode Unit 42 to 870 MHz VHF-L1 (42–106 MHz) 4.5 dB VHF-L2 (107–247 MHz) 2.4 dB VHF-H (248–470 MHz) 3.0 dB UHF (471–870 MHz) 4.0 dB 1 kHz | 10 kHz | 100 kHz | 1 MHz –100 | –100 | –105 | –132 dBc/Hz 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 Vppd RF Frequency Range (LT only) 42 to 870 MHz LT Output Return Loss (Active) 10 dB 6.7 dB Active mode 2.2 dB Zero-power mode –3.2 dB LO Phase Noise at 860 MHz LO Integrated Phase Noise at 860 MHz Loop Through Output LT Noise Figure (Active) Max gain LT Gain *Note: Includes all connector, PCB and front-end circuit losses at the F-connector input of the Si2124 EVB. Selection Guide Part # Description Si2124 Digital terrestrial Set Top Box tuner for ATSC, DVB-T2/T, ISDB-T VDDH GND VDDH XTAL_O XTAL_I RF_REF 19 3x3 mm QFN-24 Package Information RF_OUT Pin Assignments 18 17 16 15 14 13 RF_IP 20 12 XOUT GND 21 11 LIF_P GND PAD RF_IN 22 10 LIF_N ADDR 23 9 VDDH GPIO1 24 8 GND 6 GND 5 AGC1 4 AGC2 3 SCL SDA GPIO2 1 2 7 VDDL Dimension Min A 0.80 Nom Max 0.85 0.90 Unit mm D, E 3.00 BSC mm e 0.40 BSC mm e1 J, K 0.45 BSC 1.60 1.70 mm 1.80 mm Digital Terrestrial Set Top Box Tuner Copyright © 2015 by Silicon Laboratories 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 4.3.15