MAX5861TEXA+ by Analog Devices

DOCSIS 3.1 High-Density SCQAM and OFDM Downstream Cable Modulator

Status: Active
Series: MAX5861
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock
The MAX5861 is an integrated, high-density, SCQAM and OFDM downstream cable modulator, digital up-converter (DUC) and RF digital-to-analog converter (RF-DAC). The MAX5861 is DOCSIS 3.1-compliant and is optimized for converged cable access platform (CCAP) hardware. The MAX5861 performs baseband I/Q symbols to RF up-conversion to digitally synthesize a selectable combination of SCQAM and OFDM blocks on a single RF port. A combination of up to six 192MHz blocks of SCQAM or OFDM channels can be powered on at any one time, where a block is defined as either 32 X 6MHz (or 24 X 8MHz) SCQAM channels or an OFDM channel (up to 192MHz wide). The MAX5861 features three differential time-multiplexed input data ports that support LVDS or SSTL 1.2/1.5 in DDR mode. The MAX5861 SCQAM input port A accepts 10-bit Forward Error Correction (FEC)-encoded data for up to 160 (6MHz) individually programmable channels. The SCQAM path performs QAM mapping, root raised cosine (RRC) pulse shaping, and resampling, compliant with ITU-T J.83 Annex A, B, and C. This port also supports 1024-QAM with the use of an offset bias bit. Up to four channels can be operated in RRC filter bypass mode at up to 2.5Msym/s for legacy communications to older generation devices. Each of two available 9-bit OFDM ports, B or C, support up to three 12-bit OFDM IFFT-processing channels. Each IFFT-processing channel supports OFDM blocks of up to 192MHz bandwidth with selectable 4k or 8k subcarriers and up to 4096-QAM modulation options. Each of the two OFDM ports also allow bypassing of the IFFT processing with a single 18-bit I/Q data path to support user-defined modulation at up to 192MHz bandwidth. A cascade of interpolation filters, complex modulators, channel combiners and Direct Digital Frequency Synthesizers (DDFS) up-convert the SCQAM and/or OFDM signals with full frequency agility from 43MHz to 1218MHz. The up-converted spectrum is fed to a Digital Pre-Distortion (DPD) block to compensate for distortion performance limitations in the DAC and external output amplifiers.

Where to Buy

Prices starting from US$652.19

Distributor Stock
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Farnell
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Features

High-Density Cable Downstream Modulator Combine Up to Six 192MHz Blocks of 32 x 6MHz SCQAM Channels and DOCSIS 3.1 OFDM Channels Integrated 14-Bit 4.9152Gsps RF-DAC
Combine Up to Six 192MHz Blocks of 32 x 6MHz SCQAM Channels and DOCSIS 3.1 OFDM Channels
Integrated 14-Bit 4.9152Gsps RF-DAC
Highly Flexible and Configurable ITU-T J.83 Annex A, B, and C SCQAM Channels IFFT Processing D3.1 OFDM Channels LVDS or SSTL 1.2/1.5 DDR Data Ports One 10-Bit SCQAM Port with 160-Channel Capacity Two 9-Bit OFDM Ports with 6 OFDM-Channel Capacity Channel Bandwidths: 1MHz to 8MHz SCQAM 24MHz/48MHz/96MHz/192MHz OFDM 192MHz IFFT Bypass Mode Full SCQAM Agility within 192MHz Block Block Agility within 1218MHz Output Bandwidth
ITU-T J.83 Annex A, B, and C SCQAM Channels
IFFT Processing D3.1 OFDM Channels
LVDS or SSTL 1.2/1.5 DDR Data Ports
One 10-Bit SCQAM Port with 160-Channel Capacity
Two 9-Bit OFDM Ports with 6 OFDM-Channel Capacity
Channel Bandwidths:
1MHz to 8MHz SCQAM
24MHz/48MHz/96MHz/192MHz OFDM
192MHz IFFT Bypass Mode
Full SCQAM Agility within 192MHz Block
Block Agility within 1218MHz Output Bandwidth
Additional Features Ease RF Design Programmable Digital Predistortion High Output Power: 9dBm (Peak CW)
Programmable Digital Predistortion
High Output Power: 9dBm (Peak CW)
Low-Power, Compact Solution 5.9W with 128 SCQAMs + 2 OFDM Channels Operating Temperature Range TA = -40°C to TJ = +110°C 12mm x 18mm, 308-Ball LFBGA
5.9W with 128 SCQAMs + 2 OFDM Channels
Operating Temperature Range TA = -40°C to TJ = +110°C
12mm x 18mm, 308-Ball LFBGA

Specifications

Resolution (bits) 14
Update Rate (Msps) 4915
Modulation Mode OFDMSCQAM
Capacity Range 160
Capacity Type Fixed
Input Interface LVDSSSTL
Output Interface Differential Analog RF
fOUT (MHz) 1218
RF-DAC Integrated
PDISS (mW) (@ Max Capacity) 5900
VSUPPLY (V) 0.91.83.3
Footprint (mm x mm) 12 x 18
Oper. Temp. (°C) -40 to +85
Package/Pins FCCSP HYBRID/308
BudgetaryPrice (See Notes) 0

Last 6 months Inventory & Pricing History

MAX5861TEXA+ Special Function by Analog Devices

SCQAM/OFDM CABLE MODULATOR, 110DEG C

Semiconductors - ICs
> Special Function
Status: Unknown
Series: -
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Supply Voltage Min 3.2V
Supply Voltage Max 3.5V
No. of Pins 308Pins
Operating Temperature Min -40°C
Operating Temperature Max 110°C
RoHS Compliant Yes

Last 6 months Inventory & Pricing History

Alternative Descriptions

Scqam/Ofdm Cable Modulator, 110Deg C | Newark Electronics

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This part has not been flagged as RoHS Compliant.

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