Digital TV demodulator adds worldwide broadcast standards

December 09, 2014 // By Graham Prophet
Silicon Labs’ next-generation digital TV demodulator family has expanded support for the latest satellite, terrestrial and cable standards. The Si218x family includes the first demodulators supporting the recently launched DVB-S2X specification, which adds new features and higher performance to the DVB-S2 standard.

The family also expands Silicon Labs' terrestrial demodulator portfolio with support for the Integrated Services Digital Broadcasting-Terrestrial (ISDB-T) standard prevalent in Brazil and other Latin America countries. The Si218x family is designed to meet the digital TV reception requirements of TV and set-top box (STB) makers, RF network interface module (NIM) suppliers and DVD/Blu-ray recorder manufacturers worldwide.

Silicon Labs’ single-chip Si218x demodulators build on continuous digital demodulation architectural enhancements to support emerging and established standards for terrestrial (DVB-T/T2, ISDB-T), satellite (DVB-S/S2/DSS/S2X) and cable (DVB-C/C2, ITU-T J83 Annex A/B/C) reception. The single-channel Si218x and dual-channel Si218x2 families enable TV and STB manufacturers to simplify complex video front-end designs and to address combinations of multiple broadcast standards with a single low-power and cost-effective demodulator solution.

For terrestrial broadcast applications, Silicon Labs has embedded its field experience in the terrestrial broadcast market into its third-generation Si218x DVB-T2 demodulators, which now support the popular ISDB-T standard. Developed to deliver high-quality digital video terrestrial reception, ISDB-T was pioneered in Japan and is deployed in Brazil and another 15 countries in South America, Central America, Africa and Asia.

“Silicon Labs' ISDB-T demodulator and TV tuner chipset comply with all ABNT NBR 15604:2007Vc2008 specifications with significant margin to all items verified,” said Dr. Gunnar Bedicks, chief researcher at the Mackenzie Digital TV Laboratory. “The demodulator behaved extremely well in difficult reception test cases with outstanding overall performance, in particular against multipath with pre- and post-echoes and also against Doppler effects.”

The Digital TV Laboratory, a part of Mackenzie Presbyterian University located in Sao Paulo, Brazil, is the leading digital TV laboratory for transmission and reception system research. Since 1997, the laboratory has handled ISDB-T compliance and certification tests in cooperation with the Brazilian Broadcasters Association (ABERT), the Society for TV Engineers (SET), the Brazilian Communications Ministry and the Brazilian government regulatory agency, ANATEL.

In addition to complying with ISDB-T, the Si218x family supports the new DVB-S2X extension