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9 June 2009


Avago launches flat-gain, high-linearity gain block for cellular, WiMAX and set-top boxes

At this week’s 2009 IEEE MTT-S International Microwave Symposium (IMS) in Boston, Avago Technologies of San Jose, CA, USA is launching a new flat-gain, high-linearity low-noise gain block that can be used as either a broadband gain block or a driver amplifier monolithic microwave integrated circuit (MMIC).

Housed in an industry-standard SOT-89 package measuring 4.5mm x 4.1mm x 1.5 mm, the MGA-30689 operates in the 40-2600MHz frequency band and only requires a simple DC biasing match. Moreover, no additional RF matching components are required to achieve wide bandwidth performance, the firm says.

The MGA-30689’s ease-of-use and broadband performance should suit cellular devices, WiMAX wireless base-stations, satellite and cable TV set-top boxes, as well as other wireless applications that operate in the 40-2600MHz frequency range.

The device’s high linearity and flat gain (of 14dB±0.5dB, 40-2600MHz) are achieved through the use of Avago’s proprietary 0.25µm GaAs enhancement-mode pHEMT process. The built-in temperature-compensated internal bias circuit also provides stable current over temperature and process threshold voltage variations. Additionally, the broadband flat-gain feature suits use in other cellular infrastructure designs that require the same driver amplifier or gain block for different frequencies.

At a typical operating condition of 5V and 103mA, the MGA-30689 delivers performance of 14dBm gain, 40dBm OIP3 and 22dBm P1dBm and 3.2dBm noise figure at 1950MHz.

Pricing of the MGA-30689 starts from $1.69 in 10,000 unit volumes.

See related items:

Avago adds five PAs to CoolPAM range for UMTS handsets and datacards

Avago introduces MGA-21108 GaAs LNA MMIC

GaAs device market consolidates on top three after 9% growth in ‘08

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