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15 September 2008


Anadigics’ DOCSIS 3.0 amp featured in Sigma’s reference design for IP-Cable set-top box

Anadigics Inc of Warren, NJ, USA says that its ARA2017 programmable gain amplifier, which it claims is the first of its kind to be optimized for DOCSIS 3.0. cable modem applications integral to the performance of DOCSIS 3.0 terminal products, is featured in the new multi-channel, multi-standard, IP-Cable set-top box (STB) reference design of fabless semiconductor provider Sigma Designs of Milpitas, CA, USA.

Developed for deployment in existing cable TV systems, Sigma’s new Tru2way SMP8634-based reference design is a turnkey solution for a DOCSIS 3.0 STB with an integrated cable modem and voice-over-internet protocol (VoIP) capability. The firm says that it enables a virtually unlimited channel line-up for cable systems to display (or record) up to three channels simultaneously. Fast upstream and downstream DOCSIS data channels are also supported.

Providing the reverse path amplification, the ARA2017 supports high linearity and power levels, which facilitate channel bonding, enabling the STB to deliver a higher data rate of 120Mb/s in the cable system upstream (return) path. The downstream data rate is as high as 160Mb/s. The ARA2017 operates in the 5-85MHz frequency range and supports DOCSIS 3.0-specified signal levels of +64dBmV while minimizing harmonic distortion and output noise levels. At minimum attenuation, it has 33dB of RF gain, and an integrated, digitally controlled, multi-stage precision step attenuator provides up to 58dB of attenuation in 2dB increments. The device requires a single 5V supply and is offered in a 28-pin 5mm x 5mm x 1mm QFN package.

“Our new design leverages Anadigics’ DOCSIS 3.0-based technology to provide manufacturers with an industry-leading, next-generation home entertainment product,” says Sigma’s VP of strategic marketing Ken Lowe. “Anadigics’ DOCSIS 3.0 programmable gain amplifier is an industry first and, as such, it adds a critical element to the overall performance and functionality of our STB design,” he adds.

“The ARA2017 is integral to the performance of DOCSIS 3.0 hybrid set-top boxes and cable modem products,” notes Ron Michels, senior VP and general manager of Anadigics’ broadband business. "Infrastructure upgrades in the cable industry are facilitating faster up- and downstream communications, and Sigma has leveraged the performance of our new amplifier to offer a first-class triple-play experience in one package.”

See related items:

Anadigics’ sales grow to record $80.5m, driven by broadband

Anadigics launches first programmable gain amplifier optimized for DOCSIS 3.0 cable modems and E-MTA

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