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

Each of the Si218x2 dual demodulators integrates two separate high-performance single demodulators in a compact 8x8 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 8x8 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
  • 8x8 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
Find the Right Si21832/822/812/802 Device Select Columns
Select Columns
Part Number Description Package Type Package Size (mm)
Dual ISDB-T and DVB-T/C Digital Demodulator QFN68 8x8
Dual ISDB-T and DVB-S2X/S2/T/C/S Digital Demodulator QFN68 8x8
Dual ISDB-T and DVB-T2/S2X/S2/T/C/S Digital Demodulator QFN68 8x8
Dual ISDB-T and DVB-T2/C2/S2X/S2/T/C/S Digital Demodulator QFN68 8x8

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