Si2176 Worldwide Hybrid TV Tuner IC with Analog Demodulator Description Features The Si2176 integrates a complete hybrid tuner with analog TV demodulator supporting all worldwide terrestrial and cable TV standards. Leveraging Silicon Labs’ field proven digital low-IF architecture, the Si2176 maintains the unmatched performance and design simplicity of the Si2173 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 silicon tuners and discrete MOPLL-based tuners, the Si2176 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 Si2176 integrates the complete signal path from antenna input to IF incorporating Silicon Labs' third generation field-proven analog demodulator to provide analog video and sound outputs. Compared to traditional discrete MOPLL-based tuners, the Si2176 eliminates hundreds of external components including external LNAs, tracking filter varactors and inductors (unlike competing silicon tuners), and SAW filters, resulting in the simplest, lowest-cost BOM for a hybrid TV tuner. Interfacing the Si2176 seamlessly with the Si2165 DVB-T/C demodulator creates a complete terrestrial and cable hybrid PAL/SECAM and DVB-T/C receiver. - Worldwide hybrid TV tuner - Analog TV: NTSC, PAL/SECAM - Digital TV: ATSC/QAM, DVB-T/T2/C, ISDB-T/C, - - - - Applications Si2176 I ADC PGA RF_IP Hybrid ½-NIM, ¾-NIM and full-NIM iDTV (Integrated Digital TV) Digital terrestrial and cable STB Hybrid PVR and DVD recorder Balun RF_IN Q ADC PGA RF AGC 1.8 V 3.3 V LDO 0 / 90 FREQ SYNTH IF AGC FILTER FILTER ATV DEMOD LOW-IF XOSC Copyright © 2011 by Silicon Laboratories AGC DLIF DTV DEMOD CVBS SIF/AF RSTB INTB AV SoC SDA SCL ADDR GPIO BCLK XOUT XTAL_I XTAL_O Worldwide Hybrid TV Tuner DSP DSP OUTPUT INTERFACE - CONTROL INTERFACE ANTENNA INPUT DTMB - 42–1002 MHz frequency range Compliance to A/74, NorDig, D-Book, C-Book, ARIB, EN55020, OpenCable™ specifications Best-in-class real-world reception - Exceeds discrete 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 Analog TV demodulator - Superior video SNR performance - Overmodulation and ICPM tolerant Customizable ATV and DTV channel filters Flexible output interface - CVBS + SIF/AF to audio/video processor or SoC - 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 9.20.11 Si2176 Worldwide Hybrid TV Tuner with Analog Demodulator Selected Electrical Specifications (VDD_H = 3.3 V, VDD_L = 1.8 V, VDD_D = 1.8 V, TA = 25 °C) Parameter Test Condition Typ Unit 1.8 and 3.3 V 0.98 | 0.87 W 42 to 1002 MHz max gain 4.0 dB N±18,±36; max RF gain +18 dBm N±1,±2; max RF gain –7 dBm Supply Voltage Total Power Consumption VHF bands | UHF bands RF Input Frequency Range Noise Figure* Wideband IIP3* Inband IIP3* 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) N±1; RF input* to DLIF output 80 dB 30 dB video SNR; M/N | B/G, D/K | I | L/L’ –67.5 | –67 | –66 | –68 dBm ATV Receiver Unweighted Video SNR +1 dBm input level; M/N | B/G, D/K | I | L/L’ 55.5 | 55 | 53.5 | 56.5 dB channel BW = 6 MHz | 7 MHz | 8 MHz 4 to 7 | 4.5 to 6.5 | 5 to 6 MHz programmable 0.5 to 2.0 Vppd Adjacent Channel Attenuation ATV Receiver Sensitivity DLIF Output Center Frequency DLIF Differential Output Voltage Swing *Note: Measured at the F-connector input of the Si2176 reference design and includes all connector, PCB, and front-end circuit losses. 5 x 5 mm QFN-32 Package RF_SHLD RF_IP RF_IN RF_SHLD VDD_H VDD_H XTAL_I XTAL_O Pin Assignments 24 23 22 21 20 19 18 17 GND 25 16 XOUT GND 26 15 BCLK GND 27 14 VDD_L GPIO1 28 13 DLIF_P GND_PAD INTB/GPIO2 29 12 DLIF_N RSTB 30 11 CVBS GND 31 10 VDD_H 9 4 5 6 7 8 Symbol Min GND ADDR NC DLIF_AGC SCL SIF/AF 3 SDA 2 VDD_D 1 VDD_S VDD_IO 32 A D, E e 0.80 Nom Max Unit 0.85 0.90 5.00 BSC 0.50 BSC mm mm mm Selection Guide Part # Description Si2176 Worldwide hybrid TV tuner IC with analog demodulator for NTSC, PAL/SECAM, ATSC/QAM, DVB-T/T2/C, ISDB-T/C, DTMB Worldwide Hybrid TV Tuner Copyright © 2011 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. 9.20.11