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Internally matched broadband RF VGA eases design process

Posted: 13 Nov 2014 ?? ?Print Version ?Bookmark and Share

Keywords:VGA? RF? F0480? GaAs?

Integrated Device Technology Inc. (IDT) launched the F0480, an internally matched 400MHz to 2,700MHz broadband radio frequency (RF) variable gain amplifier (VGA) designed to simplify the design process while ensuring a more reliable implementation.

The device delivers exceptional RF performance by combining IDT's Glitch-FreeTM digital step attenuator and Zero-DistortionTM technologies in a compact 5x5 package.

The chip offers better moisture sensitivity and protection from electrostatic discharge (ESD) for a more robust and reliable technology than Gallium arsenide (GaAs) devices, which require external matching and can suffer from delayed secondary avalanching. It is ideal for such products as cellular 4G base stations, broadband repeaters, distributed antenna systems and microwave backhaul equipment.


Utilising these innovative technologies results in an industry-leading VGA with 41dBm OIP3 with 13dB of maximum gain, a wide 23dB gain control range with 1dB step resolution and a Noise Figure of 4dB, all while consuming only 100mA of current.

"The IDT F0480 delivers unique capabilities to help engineers meet the stringent requirements when designing-in and implementing RF VGAs," said Chris Stephens, IDT's senior director, Wireless Product Definition and Marketing. "Its very low power consumption of less than 500mW eases thermal management requirements, while its internal broadband matching greatly simplifies integration into the system."

The F0480 has 2kV ESD rating and a moisture sensitivity level (MSL) rating of 1, compared to MSL3 for competing GaAs devices. The device's flat gain slope vs. frequency counteracts board losses.

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