Dual DVB-S2X/S2/S demodulator

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The Si21662D integrates two separate high-performance digital demodulators for the DVB-S2/S and DVB-S2X standards into a single compact package. Leveraging Silicon Labs' proven digital demodulation architecture, the Si21662D achieves excellent reception performance while significantly minimizing front-end design complexity, cost, and power dissipation. Connecting the Si21662D to a dual satellite tuner, results in a high-performance and cost optimized TV or STB front-end solution.

The satellite reception allows demodulating widespread DVB-S, DIRECTV™ (DSS), DVB-S2, DIRECTV™ (AMC) legacy standards, and new Part II of DVB-S2 (S2X) satellite broadcast standard. A zero-IF interface (differential) allows for a seamless connection to market proven satellite silicon tuners. It also integrates two DiSEqC™ 2.0 LNB interfaces for satellite dish control and, for each satellite demodulator, an equalizer to compensate for echoes in long cable feeds from the LNB to the satellite tuner RF input.

Variable Coding and Modulation (VCM), QPSK/8PSK, 8/16/32APSK demodulation schemes and broadcast services profile are the main specifications of the DVB-S2/S2X demodulator. Silicon Labs' innovative LDPC and BCH decoding architecture delivers best-in-class reception while exhibiting low power dissipation.

The Si21662D offers an on-chip blind scanning algorithm, as well as blind lock function.

The Si21662D 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
DVB-S2 (ETSI EN 302 307-1 V1.4.1)
QPSK/8PSK demodulator
DVB-S2X (ETSI EN302 307-2 V1.1.1)
Broadcast profile supported
QPSK/8PSK, 8/16/32APSK demodulator
Roll-off factors from 0.05 to 0.35
VCM supported
ISSY and NPD supported
MIS supported
Output modes: TS, GPCS, and GSE-HEM supported
Channel bonding for TS transmission supported
DVB-S (ETSI EN 300 421) and DSS supported
QPSK demodulator and enhanced FEC decoder
Dual DiSEqC 2.x interface, Unicable support
1 to 45 MSps for all satellite standards (<40 MSps in 32APSK)
I2C serial bus interfaces (master and host)
Upgradeable with firmware patch download via fast SPI or I2C (broadcast mode supported)
Dual independent differential ZIF I/Q inputs
GPIOs and multi-purpose ports (two per demodulator)
Separate flexible TS interfaces with serial or parallel outputs and cross-bar feature
Fast lock times
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-S2X/S2/S demodulator
Part #: Si21662-D60-GM
Dual DVB-S2X/S2/S demodulator