Hot-selling and scarce MAX5860PUXH+ Scalable High-Density Downstream Cable QAM Modulator BGA spot stock

Product Descriptions

The MAX5860 is an integrated, high-density, downstream cable  QAM  modulator,  digital  upconverter  (DUC)  and RF  digital-to-analog  converter  (RF-DAC).  The  device performs QAM  mapping,  pulse shaping and digital  RF upconversion of forward-error-correction (FEC) encoded data with full agility and drives a single RF-port using a14-bit 4.6Gsps DAC. The device digitally synthesizes RF signals with  up to  128  DOCSIS-compliant 6MHz QAM channels (or up to 96 8MHz QAM channels). The device has  scalable  QAM  capacity  and  provides  high-density QAM modulation with very low power dissipation (45mW/ QAM typical) in a compact 12mm x 17mm footprint. 

The device accepts FEC-encoded CMOS data (symbols) on up to four 10-bit input ports that accept up to 32 timeinterleaved digital data streams each. Each channel features an individually configurable QAM mapper, RRC filter, and arbitrary rate resampler (ARR). The device performs pulse  shaping,  resampling,  interpolation  and  quadrature modulation of input data, supporting all data rates defined in DOCSIS 3.0 and DVB-C. A cascade of interpolation filters, complex modulators, and channel combiners allow modulation of the signal to any frequency from 47MHz to 1006MHz. Integrated direct digital frequency synthesizers allow positioning of the QAM channels with a resolution of 125Hz.The interpolation filters and resamplers provide linear phase and excellent gain flatness. Output data from the last modulator is fed to a digital-predistortion (DPD) block that can be used to correct distortion in the device’s integrated RF-DAC and output amplifiers external to the device.

Product Features

● Integrated Downstream Cable QAM Modulator

•   High-Density: Scalable Up to 128 QAM Channels Factory Preset for 32, 48, 64, 96, or 128 QAM Channels Soft-Key Field-Upgradeable in Steps of 8 QAMs*

•   14-Bit 4.6Gsps RF-DAC

•   DOCSIS 3.0 DRFI Compliant

●Highly Flexible and Configurable

•   RRC Filters Support ITU-T J.83 Annex A, B, and C

•   1MHz to 8MHz Channel Bandwidth

•   Full Carrier Agility within Each of Four 192MHz Blocks Block Agility within 950MHz Output Bandwidth

•   Reconfigurable Without Service Interruption

•   Input Symbol Rate: 1Msym/s to 7.14Msym/s Independently Set for Each Channel

•   Integrated QAM Mapper (16/32/64/128/256-QAM) Supports All ITU-T J.83-Defined Constellations

•   Four CMOS Input Ports Support Up to 1024-QAM

●Additional Features Ease RF Design

•   Programmable Digital Predistortion

•   High DAC Output Power 9dBm (CW)Eliminates Pre-amp

●Low Power,Compact Solution

•  5.7W at 128 (6MHz) QAMs, fS = 4.6Gsps

•   12mm x 17mm, 280-Ball FCBGA

Product Applications

●Edge QAM, CMTS, CCAP, IP-QAM

●Remote PHY, Coax Media Converters

●Multi-Dweller Unit Mini-Headends

Product Specifications

Product Photos

For more product information, please download the PDF

WhenCE is HIGH (deselected),the device assumes a standby mode at which the power dissipation can be reduced down to250 µW (typical) with CMOS input levels.