Last week, TriAccess Technologies, a provider of cable TV and fiber-to-the-home (FTTH) radio frequency integrated circuits (RFIC) for amplifying multimedia content, announced the launch of a new RFIC featuring on-chip linearization.
TriAccess said the new chip, which is called the TAT7467, is a differential RF amplifier covering the cable TV band that delivers improved RF output capability with reduced power consumption. It applies a patent-pending, on-chip linearization process for 75-Ohm DOCSIS 3.0 Edge QAM applications. Production shipments are slated for the end of next year’s first quarter.
“Amplifier linearization has been successfully deployed externally on other devices, but until now cable OEMs did not have an on-chip linearization solution capable of achieving comparable high efficiency levels,” said Chris Day, president and CTO of TriAccess Technologies. “The TAT7467 has been designed for switched digital video (SDV) and video-on-demand (VOD) content, allowing customized programming to be switched to different subscribers.”
The TAT7467 operates within a bandwidth of 54-1002 MHz, with greater than 17.5 dB of RF gain and an output return loss of better than -20 dB. It uses 5.0V supply voltage and consumes 375 mA of current (nominal) that can be easily adjusted to lower current levels for other cable TV applications.
The company said the new chip achieves higher output performance using one-third less power compared with today’s DOCSIS 3.0 standard components that lack on-chip linearization.
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