Si2183/82/81/80 Digital ISDB-T TV Demodulators 

The Si2183/82/81/80 integrates digital demodulators for ISDB-T and all of the first, second and third generation DVB video broadcasting standards, ISDB-T/DVB-T2/C2/S2X/S2/T/C/S, ISDB-T/DVB-T2/S2X/S2/T/C/S, ISDB-T/DVB-S2X/S2/T/C/S, and ISDB-T/DVB-T/C respectively, in a single advanced CMOS die. Leveraging Silicon Labs' proven digital demodulation architecture, the Si2183/82/81/80 achieves excellent reception performance for each media, while significantly minimizing front-end design complexity, cost and power dissipation.

Connecting the Si2183/82/81/80 to a terrestrial and cable hybrid TV tuner or digital only tuner, such as Silicon Labs' Si2177, Si2151, and Si2141 results in a high-performance and cost optimized TV front-end solution.

Silicon Labs’ multi-standard demodulator can accept a standard IF (36 MHz) or low-IF input for terrestrial and cable standards. The ISDB-T demodulator supports all modes specified by current ABNT NBR 16.601 and ABNT NBR 15.604 specifications. The main features of the ISDB-T mode are three layers decoding, TMCC decoding, support for differential demodulation, partial reception decoding, and AC1, AC2 decoding. The DVB-T2 demodulator supports all modes specified by current DVB-T2-V1.3.1 standard. The main features of the DVB-T2 and T2-Lite modes are 256 QAM with rotated constellations, SISO and MISO support, FEF management, fully autonomous signal acquisition including automatic L1 signaling parsing, scrambling of L1 post-signaling, 600 kHz acquisition range, support for all pilot patterns, and DVB-T2/T auto-detection.

The satellite demodulation functionality allows demodulating widespread DVB-S, DIRECTV™ (DSS), DVB-S2, and DIRECTV™ (AMC) legacy standards, as well as new Part II of DVB-S2 (S2X) satellite broadcast standard. Broadcast services, variable coding and modulation (VCM), 8, 16, 32 APSK modulations and code rates, new shorten roll-off factors, are the main specifications of the new DVB-S2 demodulator. A zero-IF interface allows for a seamless connection to market proven satellite silicon tuners. It also integrates DiSEqC™ 2.0 LNB interface for satellite dish control and an equalizer to compensate for echoes in long cable feeds from the LNB to the satellite tuner RF input.

The Si218x offers an on-chip blind scan algorithm for DVB-S2X/S2/S and DVB-C2/C standards, as well as a blind lock function. The Si218x programmable transport stream output interface provides a flexible range of output modes and is fully compatible with all MPEG decoders or conditional access modules to support any customer application.



  • DVB-C2 (ETSI EN 302 769)
    • 16-QAM to 4096-QAM OFDM demodulation
    • 6 MHz and 8 MHz bandwidth
    • Notch management
  • DVB-T2 (ETSI EN 302 755-V1.3.1) with T2-Lite (Annex I)
    • Bandwidth: 1.7, 5, 6, 7, or 8 MHz and extended BW
    • Supports up to 255 PLPs
    • FEF management
    • NorDig Unified 2.4 and D-Book 7 V3 compliant
  • DVB-S2 (ETSI EN 302 307-1)
    • QPSK/8PSK demodulator
  • DVB-S2X (ETSI EN 302 307-2)
    • QPSK/8PSK, 8/16/32APSK demodulator
    • Roll-off factors from 0.05 to 0.35
  • DVB-C (ETSI EN 300 429) and ITU J.83 Annex A/B/C
    • QAM demodulator and FEC decoder
    • 1 to 7.2 MSymbol/s
  • ISDB-T (ABNT NBR 16.601 and 15.604)
    • 6, 7, and 8 MHz bandwidth
    • Partial reception supported
    • AC1 and AC2 decoding
  • DVB-T (ETSI EN 300 744)
    • OFDM demodulator and enhanced FEC decoder
    • NorDig Unified 2.4 and D-Book 7 V3 compliant
  • DVB-S (ETSI EN 300 421) and DSS
    • QPSK demodulator and enhanced FEC decoder
  • 1 to 45 MSymbol/s for all satellite standards (<40 MSps in 32APSK)
  • LDPC and BCH FEC decoding for T2/C2 and S2X/S2 standards
  • I2C serial bus interfaces (master and host)
  • Firmware control for upgradeability
  • Flexible TS output interface (serial, parallel, and slave)
  • DiSEqC™ 2.0 interface and Unicable support for satellite
  • Fast lock times for all media
  • Low power consumption
  • Two power supplies: 1.2 and 3.3 V
  • 7 mm x 7 mm, QFN-48 pin package, Pb-free/RoHS compliant
  • Pin-to-pin compatible with all Si216x/8x single demods family
  • API compatible with all single and dual demods families

Si2183/82/81/80 Product Matrix

Part Number Data Sheet Description
ISDB-T and DVB-T/C Digital Demodulator
ISDB-T and DVB-S2X/S2/T/C/S Digital Demodulator
ISDB-T and DVB-T2/S2X/S2/T/C/S Digital Demodulator
ISDB-T and DVB-T2/C2/S2X/S2/T/C/S Digital Demodulator
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