描述 Description

The MxL231 is a low-power, upstream PGA IC that is designed for DOCSIS 3.0 applications with extended power capability. The MxL231 targets DOCSIS and EuroDOCSIS cable gateway designs.

The amplifier covers a frequency range of 5MHz to 85MHz, and can transmit eight simultaneous 64-QAM signals, each at 56dBmV at the balun output. The MxL231 is designed to be used in conjunction with all MaxLinear DOCSIS 3.0 Full-Spectrum Capture? (FSC?) tuners, such as the MxL265D, MxL267D, and MxL268.

The MxL231 is configurable through an SPI bus and operates using a single 3.3V supply. The MxL231 is offered in a small 4mm x 4mm footprint, 24-pin QFN package.

特性 Features

·Very low-power consumption of 950mW typical in an eight-channel QAM mode
·Low standby power <27mW
·Small 4mm x 4mm QFN package
·Single 3.3V supply
·65 gain steps in 1dB increments
·65dBmV combined Tx power for eight QAM channels at the balun output
·Configurable through an SPI
·Ideal upstream amplifier for MxL265D, MxL267D, and MxL268 designs
·Supported Standards:
·DOCSIS 3.0 and 2.0
·EuroDOCSIS 3.0 and 2.0

應用 Application

·EMTAs
·DOCSIS 3.0 cable modems
·DOCSIS 3.0 cable gateways
·VoIP modems
·Set-top boxes (STBs)