​Si21832/822/812/802 Dual ISDB-T Digital Demodulators

Each of the Si218x2 dual demodulators integrates two separate high-performance single demodulators in a Si218x2 dual demodulators integrate two separate high-performance single demodulators in a compact 8 x 8 mm QFN package. Si21832/822/812/802 devices support ISDB-T and DVB-T2/C2/S2X/S2/T/C/S, DVB-T2/S2X/S2/T/C/S, DVB-S2X/S2/T/C/S and DVB-T/C, respectively. Leveraging our proven digital demodulation architecture, each embedded demodulator achieves excellent reception performance for each media while significantly minimizing front-end design complexity and cost. Connecting Si218x2 devices to both a dual terrestrial/cable TV tuner and a dual satellite tuner results in a high-performance and cost optimized dual-channel TV or STB front-end solution

Si218x2 demodulators accept a standard IF (36 MHz) or low-IF input for terrestrial and cable standards and offer an on-chip blind scanning algorithm for DVB-S2X/S2/S and DVB-C standards (as well as blind lock). Si218x2 devices embed two independent programmable transport stream interfaces to provide a flexible range of output modes, including a TS cross-bar functionality, and are fully compatible with all MPEG decoders or conditional access modules to support any application.

Package
As small As 8 x 8 mm
Pin-compatible and API compatible
Dual demodulators

Si21832/822/812/802 Common Specs

  • 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) and T2-Lite (Annex I)
    • Bandwidth: 1.7, 5, 6, 7 or 8 MHz (and extended BW)
    • Scrambling of L1 post signaling supported
    • FEF management
    • NorDig Unified 2.4, 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-T J.83 Annex A/B/C
    • QAM demodulator and FEC decoder
    • 1 to 7.2 M Symbol(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, D-Book 7 V3 compliant
  • DVB-S (ETSI EN 300 421) and DSS
  • LDPC and BCH decoding for T2/C2 and S2X/S2 standards
  • 1 to 45 MSymbol/s for all satellite standards (<40 MSps in 32APSK)
  • Dual DiSEqC™ 2.x interface, Unicable support
  • Enhanced immunity to co-channel interferers
  • I2C serial bus interfaces (master and host)
  • Dual independent differential IF input for T/C tuners and differential ZIF I/Q inputs for satellite tuners
  • GPIOs and multi-purpose ports (two per demodulator)
  • Firmware control for upgradeability
  • Separate flexible TS interfaces with serial or parallel outputs, including cross-bar feature
  • Fast lock times for all media
  • Only two power supplies: 1.2 and 3.3 V
  • 8 mm x 8 mm, QFN68 package, Pb-free/RoHS compliant
  • Pin-to-pin compatible with Si216x2/8x2 dual demods family
  • API compatible with all single and dual demods families
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