SI2166-B20-GM

Video Processing Overview

The SI2166-B20-GM is a digital demodulator integrating DVB-S, DVB-S2 (AMC-compliant), and DSS standards into a single CMOS chip. It features QPSK/8PSK demodulation with LDPC/BCH decoding for satellite TV reception. The device utilizes a zero-IF interface with two high-speed ADCs for direct connection to satellite silicon tuners. Power supplies are limited to 1.2 V and 3.3 V. It supports blind scanning algorithms and DiSEqC 2.0 LNB control. The component is housed in a 7x7 mm QFN-48 pin package.

Video Processing Feature Summary

• Integrates DVB-S, DVB-S2, and DSS digital demodulators with advanced FEC decoding architecture.
• Features a zero-IF interface with dual high-speed ADCs for seamless tuner connectivity.
• Includes an on-chip blind scanning algorithm and DiSEqC 2.0 LNB interface for dish control.
• Provides a flexible programmable Transport Stream interface compatible with MPEG decoders.

Video Processing Applications

• Full-NIM systems
• Integrated Digital TV (iDTV)
• Digital satellite set-top boxes (STB)
• PC-TV accessories
• PVR, DVD, and Blue Ray disc recorders

Video Processing Procurement Notes

Verify the specific B20 suffix against official Skyworks documentation to confirm DVB-S/S2 support and AMC compliance. Confirm the GM suffix indicates the standard QFN-48 package. Check current lifecycle status as legacy components may have restricted availability or require alternative sourcing strategies.

Video Processing Selection Notes

Select this component for applications requiring broad satellite standard support including legacy DSS and modern DVB-S2. Ensure the design accommodates the required 1.2 V and 3.3 V power rails. Verify compatibility with the host I2C interfaces and GPIO configurations for AGC control and tuner management.

Video Processing Part Context

This part belongs to the Si2166 series of digital demodulators designed for satellite television reception. It offers software compatibility with the Si2166-A10 and API compatibility with the Si2167-B and Si2168/69 families. The device represents a system-on-chip solution aimed at minimizing front-end complexity while maintaining high reception performance.

Video Processing Replacement Considerations

Officially documented pin-to-pin compatible replacements include the Si2167/66-A10, Si2167-B, and Si2168/69. Verify firmware and API compatibility when substituting these models to ensure seamless integration without hardware redesign.

Video Processing FAQ

What modulation schemes does the Si2166-B20 support?

The device supports QPSK and 8PSK demodulation schemes for DVB-S2, and QPSK for DVB-S standards.

Does the Si2166-B20 support blind scanning?

Yes, it includes an on-chip blind scanning algorithm for both DVB-S and DVB-S2 standards, along with a blind lock function.

How many power supplies are required for operation?

The device requires only two power supplies: 1.2 V for the core voltage and 3.3 V for analog and I/O voltages.