10 August 2011

M/A-COM Tech launches GaAs broadband push–pull amplifier for CATV infrastructure

M/A-COM Technology Solutions Inc of Lowell, MA, USA (which makes semiconductors, components, and subassemblies for RF, microwave and millimeter-wave applications) has launched a GaAs push–pull CATV amplifier that features 20.5dB gain and broadband linear performance. Packaged in a 4mm x 4mm QFN 20-lead plastic package and operating from an 8V supply, the MAAM-009455 can be used as an inter-stage or output amplifier.  

“With the introduction of the MAAM-009455, we continue to expand our portfolio of high-performance amplifiers for CATV infrastructure applications,” says product manager Graham Board. “The MAAM-009455 utilizes M/A-COM Tech’s established 0.5 micron MESFET process to deliver a highly linear, 75Ω push–pull amplifier with 20.5dB of small-signal gain,” he adds.  

The device targets next-generation CATV HFC, FTTx, HDTV, and EdgeQAM infrastructure applications, where high gain and low distortion are a requirement. The MAAM-009455 is a highly linear amplifier, with low noise figure and power dissipation. This differential amplifier uses M/A-COM Tech baluns, input and output, in order to ensure what is claimed to be best-in-class second-order performance. It also features external feedback, allowing for gain tuning.  

The MAAM-009455 exhibits gain flatness of 0.5dB (typical) over the 50–1000MHz operating band. Input return loss has been optimized to achieve better than 20dB across the band. Very low distortion characteristics provide composite second order (CSO) and composite triple beat (CTB) performance of –70dBc. The amplifier exceeds DOCSIS 3.0 DRFI specifications, making it suitable as an output stage solution for EdgeQAM head-end infrastructure.

Tags: M/A-COM pHEMT

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