Freescale Semiconductor has introduced four new low-noise amplifiers (LNAs) for wireless applications including remote keyless entry (RKE) systems, smart metering, wireless local area networks (WLAN), global positioning systems (GPS), two-way radios and industrial, scientific and medical (ISM) equipment. The MBC13917 is designed for 100 MHz to 2.5GHz applications requiring high gain (27 dB) and high reverse isolation (46 dB). This SiGe cascode amplifier configuration utilizes an integrated bias network to reduce system complexity and cost. 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 SiGe product has a low noise figure and low current drain. The MC13852 is optimized 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. All four devices are sampling now and are expected to be in production in Q1 2011. |