Cable infrastructure technology has evolved rapidly. Providers are integrating IP networking technology and optical communications into their networks to increase service options, bandwidth and number of channels. While cable providers initially offered downstream channels only, they now offer two-way channels based on Data over Cable Service Interface Specification (DOCSIS) standards.
Our industry-leading, high-performance RF ICs for cable infrastructure offer wide dynamic range to optimize signal chain performance in your broadband communication design.
Our high-density downstream cable QAM modulators and digital up-converters (DUCs) perform QAM mapping, pulse shaping, and digital RF up-conversion of forward-error-correction (FEC)-encoded data with full agility. They drive our high-speed RF-DACs to digitally synthesize RF signals and provide high-density QAM modulation with very low power dissipation. These RF ICs optimize signal chain performance in your broadband communication design.
A number of applications within cable infrastructure equipment (both at the head end and terminal) require specialized low noise amplification.
Variable gain amplifiers drive signals into the cable. Low noise, low distortion amplifiers receive signals from the cable. Upstream data-over cable (DOCSIS) amplifiers drive an upstream channel onto the cable and back to the head-end.
This 14-bit, 4.6Gsps digital-to-analog converter (DAC) is designed for direct RF synthesis of multicarrier quadrature amplitude modulation (QAM) signals in cable modem termination systems (CMTS) and edge QAM (EQAM) devices.
This integrated CATV upstream amplifier IC designed to meet the DOCSIS 3.0 requirements, while dissipating only 1.25W. The amplifier covers a 5MHz to 85MHz input frequency range (275MHz, 3dB bandwidth), and is capable of transmitting four QPSK modulated carriers, each at +58dBmV, simultaneously within this range.
Our cable solutions provide additional information on designing cable infrastructure products, including examples and block diagrams of typical designs.