Optoelectronics

Freescale enhances RF portfolio with cost-effective, small-footprint, low-noise amplifiers for wireless communications applications

8th December 2010
ES Admin
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Freescale Semiconductor has introduced four new low-noise amplifiers for wireless communications markets. Featuring low cost and a small package footprint, the new LNAs are ideal for applications from 100 MHz to 2.5GH such as remote keyless entry (RKE) systems, smart metering, wireless local area network (WLAN) applications, global positioning systems (GPS), two-way radios, industrial, scientific and medical (ISM) equipment, buffer amplifiers, mixers, gain blocks and voltage controlled oscillators (VCOs).
LNAs in small leadless packages enable new design opportunities

Building on Freescale’s LNA portfolio, these new products housed in leadless packages enable new opportunities for designs requiring low height, minimum footprint and easy-to-solder solutions for applications with tight printed circuit board placements.

· The MBC13917 is designed for 100 MHz to 2.5GHz applications requiring high gain (27 dB) and high reverse isolation (46 dB). This cascode amplifier configuration utilises an integrated bias network to reduce system complexity and costs.

· The MC13850 targets 400 MHz to 2.4GHz applications and has two selectable 3rd order intercept point modes enabling a lower current drain setting when a high intercept point is not required. A bypass mode is available to preserve input intercept point under strong signal conditions.

· The MC13851 is designed for 1000 MHz to 2.4 GHz applications and features an integrated bypass switch to preserve 3rd order intercept point performance in receivers operating in variable signal strength environments. In active mode this enhanced SiGe product has a low noise figure and low current drain.

· The MC13852 is optimised for 400 MHz to 1000 MHz applications and features an integrated bypass switch to boost dynamic range and also enable designs with very low overall current drain for high bypass mode duty cycles. Freescale’s enhanced SiGe technology ensures low noise figure and low current drain in active mode.

The low current drain and noise figure in active mode associated with these SiGe products allow designers to reduce the overall system current budget and meet sensitivity performance requirements.

Application design tools available

To speed new design development, application designs are available for a range of application frequencies and include full characterisation and design information in Evaluation Kit Quick Start guides. Characterised evaluation kits for each of these application frequencies are also available, along with s2p files and gain and noise circles.

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