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RF front-end chipset debuts for DOCSIS 3.0 cable modems

Warren, N.J.—Anadigics Inc. has developed an RF front-end chipset for cable modems designed to meet the new DOCSIS 3.0 standard.

For more on the standard, go to www.cablelabs.com.

The RFIC chipset consists of the ARA2017 programmable gain upstream amplifier, and the AIT1061 integrated wideband data tuner. According to Anadigics, the ARA2017 is the first upstream amp available for DOCSIS 3.0, while the AIT1061 has the smallest form factor (6 x 6 x 1 mm) of any current DOCSIS 3.0 tuner.

DOCSIS 3.0 enables downstream data rates of 160-Mbits/s and upstream rates of 120-Mbits/s, which represent 4X the speed of today's cable modem networks. Fast enough for IP-TV service, these speeds are achieved by “bonding” together multiple data channels for higher throughput.

The wide capture bandwidth of the AIT1061 tuner enables the simultaneous reception of multiple channels, and the linearity of both components in the chipset preserves the integrity of each channel. The ARA2017 upstream amplifier's high output power capability and low voltage transients also meet the new standard's specs for power output.

The ARA2017 delivers output power levels of +64 dBmV with very low (-55 dBc) harmonic distortion and output noise levels as low as -53.8 dBmV. The ARA2017 form factor is a 28-Pin QFN 5 x 5 x 1 mm package.

The AIT1061 includes all the functions of a double-conversion wideband data tuner and integrates upconverter, downconverter, VCO, synthesizer, IF amplifier, RF gain control and IF gain control. The AIT1061 maintains exceptional linearity over wide RF input and IF capture bandwidths to accommodate multi-channel operation.

It also features high gain and low noise figure. The AIT1061 operates from a single +5 V source, eliminating the need for a second power supply.

Anadigics, 1-908-668-5000, www.anadigics.com

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