Silicon Labs' Si2170 Hybrid Silicon TV Tuner with Analog Demodulator

DN Staff

April 10, 2010

1 Min Read
Silicon Labs' Si2170 Hybrid Silicon TV Tuner with Analog Demodulator

The Si2170 silicon tuner is aglobally-compliant hybrid TV tuner with an analog TV demodulator in a singleCMOS IC. The device integrates a highly linear RF front-end designincorporating a merged low noise amplifier and high-Q tracking filter toprovide gain only around the desired channel frequency. This design enablessuperior sensitivity and rejection of strong undesired channels andinterference in severe broadcast conditions, resulting in superior channelreception and improved picture clarity.

Silicon Labs' patented digitallow-IF architecture enables the Si2170 TV tuner to achieve exceptionalperformance and integration while addressing the challenges created by hybridanalog/digital reception and multiple regional standards. The architectureallows many functions relying on analog and discrete fixed components to beimplemented with cost-effective programmable digital signal processing. Thisenables TV manufacturers to optimize system parameters and comply withworldwide cable and terrestrial broadcast standards. The Si2170 enables simplerdesigns, reduced bill of materials and higher reliability. As TV makerscontinue to design thinner form factors, the Si2170's small footprint helpsenable the next generation of ultra-slim flat-panel TVs. For years, the TVindustry has attempted to replace traditional discrete tuners with an integratedsilicon tuner to reduce cost and complexity, harmonize across standards andshrink form factors while matching the performance of discrete solutions.Silicon Labs met this challenge with the Si2170 - the first silicon TV tuner toexceed the performance of discrete tuners, enabling TV makers to deliver improved picture quality and better reception for analogand digital broadcasts. By designing the Si2170in standard CMOS, Silicon Labs is the only company to offer a roadmap to cost-effective,single-chip TV receivers that integrate tuner/demodulator functions in a singleIC.

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