Dual DVB-T/C/ISDB-T demodulator

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The Si21802 integrates two separate high-performance digital demodulators for the Japanese and South American terrestrial ISDB-T standard and for the DVB-T and DVB-C standards in a single compact package. Leveraging Silicon Labs' proven digital demodulation architecture, the Si21802 achieves excellent reception performance for each media while significantly minimizing front-end design complexity, cost, and power dissipation. Connecting the Si21802 to a dual terrestrial/cable TV tuner results in a high-performance and cost optimized TV or STB front-end solution.

Leveraging significant field experience in DVB terrestrial demodulation (DVB-T), the Si21802 dual demodulator can accept standard or low-IF inputs (differential) and complies with the Brazilian SBTVD-T terrestrial specifications (ABNT NBR 16.601 and 15.604). Main features include fast channel scan, very short lock times, state of the art CCI performance, partial reception, and auxiliary channels decoding. DVB-T and DVB-C demodulators are next-generation enhanced versions of proven and broadly-used Silicon Labs’ Si2169/68/67/66/64/62/60 devices.

The cable reception allows demodulating widely deployed DVB-C legacy standard (ITU-T J.83 Annex A/C) and the Americas' cable standard (ITU-T J.83 Annex B).

The Si21802 offers an on-chip blind scanning algorithm for DVB-C standard, as well as blind lock function.

The Si21802 embeds two independent programmable transport stream interfaces which provide a flexible range of output modes, including a cross-bar functionality, and are fully compatible with all MPEG decoders or conditional access modules to support any customer application.

Symmetry Electronics is an authorized Silicon Labs distributor.


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Pin-to-pin compatible with all dual demodulator family: Si216x2 and Si218x2
API compatible with all single and all dual demodulators
ISDB-T (ABNT NBR 16.601 and 15.604)
6, 7, and 8 MHz bandwidth
Partial reception supported (reception of only one OFDM segment at the center of a group of segments)
AC1 and AC2 decoding
DVB-T (ETSI EN 300 744)
OFDM demodulator and enhanced FEC decoder
NorDig Unified 2.5 and D-Book 8 compliant
DVB-C (ETSI EN 300 429) and ITU-T J.83 Annex A/B/C
QAM demodulator and FEC decoder
1 to 7.2 MSymbol/s
I2C serial bus interfaces (master and host)
Upgradeable with firmware patch download via fast SPI or I2C (broadcast mode supported)
Firmware control (embedded ROM/NVM)
Dual independent differential IF input for T/C tuners
GPIOs and muti-purpose ports (two per demodulator)
Separate flexible TS interfaces with serial or parallel outputs and cross-bar feature
Fast lock times for all media
Low power consumption
Only two power supplies: 1.2 and 3.3 V
8x8 mm, QFN-68 pin package, Pb-free/RoHS compliant

Previously Viewed Products

Dual DVB-T/C/ISDB-T demodulator
Part #: Si21802-A55-GMR
Dual DVB-T/C/ISDB-T demodulator