Si2185

The Si2185 hybrid TV receiver integrates a complete hybrid tuner, a DVB-T/C digital demodulator and an analog TV demodulator supporting all worldwide analog TV standards into a single, monolithic, CMOS mixed-signal IC.

Leveraging Silicon Labs' proven 3rd-generation digital low-IF tuner architecture, the Si2185 delivers superior ATV picture quality and a higher number of received channels in real-world crowded spectrum conditions without the need for external LNAs, tracking filters or SAW filters.

Features

Hybrid Analog and Digital TV tuner

42–870 MHz frequency range
No alignment, tuning or calibration

Analog TV (ATV) demodulator

PAL/SECAM, NTSC

Digital TV (DTV) demodulator and FEC decoder

DVB-T (ETSI EN 300 744)
DVB-C (ETSI EN 300 429)
ITU J.83 Annex A/C

Supports all DVB-T modes
Supports DVB-C symbol rates from 1 to 7.2 MBaud

Advanced echo equalizer

Best-in-class real-world reception
Compliance with NorDig 2.1, D-Book, C-Book, EN55020 specifications
Highly integrated, lowest BOM

No SAW filters required
Integrated LNAs and complete tracking filters

Customizable channel select filters
Flexible output interface to AV processor

CVBS + SIF/AF
Serial or parallel TS output

Single die in standard CMOS process
3.3 and 1.8 V power supplies
7 mm x 7 mm, 48-pin QFN package, RoHS compliant

Applications

iDTV (Integrated Digital TV)
Hybrid PVR and DVD recorder
Hybrid full-NIM
Hybrid portable TV
Hybrid PC-TV card and USB dongle
Hybrid terrestrial or cable STB

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Data Short (1)

Document Name	Description	Version	Last Updated
Si2185_short.pdf	Si2185 Data Short	09.06.11	9/7/2011

Product Matrix

Part Number		Available Documents	Description
Si2185		Data Short	Hybrid digital and analog TV receiver for DVB-T/C, PAL/SECAM, NTSC

An enhanced version of the proven DVB-T/C demodulator technology from Silicon Labs' Si2165 has been incorporated into the Si2185 to deliver superior performance under a wide variety of field conditions. Both the analog and digital demodulators use sophisticated on-chip algorithms to ensure optimal reception even under difficult transmission conditions. In addition, the Si2185 offers on-chip Blindscan and Blindlock scanning algorithms for DVB-C as well as DSP-assisted DVB-T fast channel scanning.

By combining hybrid tuner and demodulator functions in a single device, the Si2185 enables a full TV receiver solution in a very small PCB footprint and with minimal external components. The Si2185 contains an on-chip crystal oscillator and only requires the connection of a standard 24 MHz crystal or a reference clock. For dual-receiver applications, the primary Si2185 can provide a reference clock on its XOUT pin directly to the XTAL_I pin of the secondary Si2185, thus saving the cost of one crystal. The Si2185 programmable Transport Stream interface provides both serial and parallel modes and is fully compatible with all MPEG decoders and conditional access modules (CI/CI+) to support any customer application.

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Audio/Video

Title Content
Si2185 Hybrid DVB-T/C and Analog TV Receiver

Features

Applications