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RF amplifier boasts ultra-small footprint

Posted: 17 May 2011 ?? ?Print Version ?Bookmark and Share

Keywords:RF amplifier? chip scale packaging? small footprint?

Avago Technologies unveils the VMMK-3xxx amplifiers, an addition to its family of the RF amplifiers. The VMMK-3xxx amplifiers leverage Avago WaferCap chip scale packaging (CSP) technology to offer an ultra-small footprint of 1x0.5x0.25mm. The amplifiers bring new functionalities to the existing Avago VMMK-1xxx and VMMK-2xxx families, including a positive gain slope low-noise amplifier (LNA), a wideband LNA, a variable gain amplifier (VGA), and four directional detectors.

With miniature 0402 package dimensions and no wirebonds, the VMMK-3xxx amplifiers experience almost no signal loss and minimal parasitics. The devices take up 5 percent of the volume and uses only 10 percent of the board area of solutions using a standard SOT-343 package. In some cases, the miniature amplifiers can effectively reduce PCB area by more than 50 percent. The ultra-small package size and fully-matched surface mount design are optimized for 500MHzC12GHz frequencies, making the high-performance devices ideal for a variety of radio architectures and space-constrained applications. The VMMK-3xxx LNAs and VGA can be used in UWB, WLAN, WiMAX, generic IF amp and gain block applications, while the new detectors can be used in base stations, point-to-point radios and generic power control loop detectors, as well as for monitoring power amplifier output.

The VMMK-3xxx family supports full surface mount capability, requiring no special tooling for assembly. The amplifiers have all I/Os routed to the backside of the device wafer through via-holes. This is a significant improvement over conventional plastic packages where bond-wires exhibit substantial parasitics that limit the operating frequency. The miniature amplifier family provides high gain, a high third-order intercept point (IP3) for good linearity, low noise figure (NF) and integrated 50? input and output matching networks to simplify system design.

Samples and production quantities of VMMK-3xxx amplifiers are available now through Avago's direct sales channel and worldwide distribution partners.

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