SI2176 Datasheet, PDF (1/2 Pages) Silicon Laboratories – Worldwide hybrid TV tuner Analog TV NTSC, PAL SECAM Digital TV ATSC QAM, DVB-T T2 C, ISDB-T C, DTMB

Si2176
Worldwide Hybrid TV Tuner IC with Analog Demodulator
Description
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.
Features
- Worldwide hybrid TV tuner
- Analog TV: NTSC, PAL/SECAM
- Digital TV: ATSC/QAM, DVB-T/T2/C, ISDB-T/C,
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
Applications
- Hybrid ½-NIM, ¾-NIM and full-NIM
- iDTV (Integrated Digital TV)
- Digital terrestrial and cable STB
- Hybrid PVR and DVD recorder
ANTENNA
Si2176
INPUT
RF_IP
PGA
Balun _{RF_IN}
PGA
RF
AGC
0 / 90
IF
AGC
1.8 V
3.3 V
LDO
FREQ
SYNTH
XOSC
I
ADC
DDSSPP
FFIILLTTEERR
Q
ATV
ADC _DEMOD
LOW-IF
AGC
DTV
DLIF _DEMOD
CVBS
SIF/AF
RSTB
INTB
AV
SoC
SDA
SCL
ADDR
Worldwide Hybrid TV Tuner
Copyright © 2011 by Silicon Laboratories
9.20.11