Cable


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.



Applications


Edge QAM and RF-DACs

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.

RF DACs and DUCs

Low Noise Amplification

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.

Broadband RF Transmitters 
TV Tuners 


Featured Products


4.6Gsps Cable Downstream Direct RF Synthesis DAC

MAX5882

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.

Industry's Lowest Power Upstream Amplifier for DOCSIS 3.0 Applications

MAX3518

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.


Solutions


Our cable solutions provide additional information on designing cable infrastructure products, including examples and block diagrams of typical designs.

Cable Modem Termination System (CMTS) - Rx

Advanced Backplane Switch/Router Card Signal Integrity Signal Integrity Secure Memory (SHA-1) Secure Memory (SHA-1) PLL/Synthesizer PLL/Synthesizer Power Detect Power Detect Monitor and Control Low-Noise Amplifier (LNA) Low-Noise Amplifier (LNA) Power Management Switching Regulator Linear Voltage Regulator Thermal Management High-Speed Analog-to-Digital Converter (ADC) High-Speed Analog-to-Digital Converter (ADC)

Edge QAM (EQAM) and Cable Modem Termination System (CMTS) - Tx

Advanced Backplane Switch/Router Card Signal Integrity Signal Integrity Secure Memory (SHA-1) Secure Memory (SHA-1) Digital Up-Converter (DUC) Digital Up-Converter (DUC) PLL/Synthesizer PLL/Synthesizer Variable-Gain Amplifier (VGA) Variable-Gain Amplifier (VGA) Monitor and Control Logarithmic Amplifier Logarithmic Amplifier Power Management Switching Regulator Linear Voltage Regulator Thermal Management High-Speed Digital-to-Analog Converter (DAC) High-Speed Digital-to-Analog Converter (DAC)

Optical Node Digital Return

Thermoelectric Control (TEC) Thermoelectric Control (TEC) Laser Driver Laser Driver Laser Monitor and Control Laser Monitor and Control Serializer Serializer Secure Memory (SHA-1) Power Detector Power Detector PLL/Synthesizer Monitor/Control Low-Noise Amplifier (LNA) Low-Noise Amplifier (LNA) Power Management Switching Regulator Linear Voltage Regulator Thermal Management High-Speed Analog-to-Digital Converter (ADC) High-Speed Analog-to-Digital Converter (ADC) High-Speed Analog-to-Digital Converter (ADC) High-Speed Analog-to-Digital Converter (ADC)

Embedded Multimedia Terminal Adapter

Linear Voltage Regulator Power Management Switching Regulator Battery Management Switch Debounce Step-Up Power ESD Protection RS-232 USB Interface GPIO Expander Wi-Fi XCVR Upstream Amplifier Low-Noise Amplifier (LNA)

Switch/Router Card

Backplane Interface/Signal Integrity Backplane Clock Hot-Swap Control DC-DC Point-of-Load (PoL) Sequencing, Monitoring, and Margining TCXO/OCXO System Clocks Datalogging Memory Security RS-232 Temperature Sensors Reset and Watchdog Timer

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