Si2168-B DVB-T2/T/C Digital Demodulator

The Si2168-B integrates DVB-T2, DVB-T and DVB-C digital demodulators into a single advanced CMOS technology mixed-signal die for new generation terrestrial and cable TV standards. Leveraging Silicon Labs' proven digital demodulation architecture, the Si2168-B achieves excellent reception performance for each media while significantly minimizing front-end design complexity, cost and power dissipation. Connecting the Si2168-B to a terrestrial and cable hybrid TV tuner, such as Silicon Labs' Si214x/Si215x/Si217x TV Tuners, results in a high-performance and cost optimized TV front-end solution.


  • DVB-T2 and T2-Lite (ETSI EN 302 755-V1.3.1)
    • COFDM demodulator and FEC (LDPC + BCH)decoder
    • Bandwidth: 1.7, 5, 6, 7 or 8 MHz (and extended BW)
    • Supports up to 255 PLPs and outputs the data PLP plus the common PLP (on a single TS)
    • Scrambling of L1 post-signaling supported
    • NorDig Unified 2.4, D-Book 7 V2 compliant
    • Firmware control (loaded in ROM)
  • DVB-T (ETSI EN 300 744)
    • COFDM demodulator and enhanced FEC decoder
    • NorDig Unified 2.4, D-Book 7 V2 compliant
  • DVB-C (ETSI EN 300 429) / ITU J.83 Annex A/B/C
    • QAM demodulator and FEC decoder
    • 1 to 7.2 M Symbol(s)
    • C-Book compliant
  • I2C serial bus interfaces (Master and Host)
  • GPIOs and multi-purpose ports for independent AGCs (up to 4) to control satellite and T/C tuners
  • Firmware control for upgradeability
  • Flexible TS interface with serial or parallel single output
  • Fast lock times for all standards including DVB-T2
  • Only two power supplies: 1.2 and 3.3 V
  • Pin-to-pin and software compatibility with the Si2168 and Si2160/62/64/66B/67B/69B
  • 7 mm x 7 mm, QFN-48 pin package, Pb-free/RoHS compliant



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EOL #1312031: Si2161C Si2165C
Product Matrix
Part NumberDescription
Si2168-BDVB-T2/T/C Digital Demodulator
Si2169-BDVB-T2/T/C/S2/S Digital Demodulator
    ​Silicon Labs internally developed DVB-T2 demodulator can accept a standard IF (36 MHz) or low-IF input and support all modes specified by DVB-T2 standard. Main features of the DVB-T2 mode are 256 QAM with rotated constellations, SISO and MISO support, FEF management, fully autonomous signal acquisition including automatic L1 signaling parsing, 600 kHz acquisition range, support for all pilot patterns and DVB-T/T2 auto-detection. The DVB-T and DVB-C demodulators are enhanced versions of proven and broadly used Si2161/63/65/67 Silicon Labs devices.
    The Si2168 offers an on-chip blind scanning algorithm for the DVB-C standards as well as blind lock. The Si2168 can use a crystal, as a reference clock, or be driven by an external clock signal from the tuner.
    The Si2168 programmable transport stream 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.


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