Microsemi’s new LX5551 and LX5552 FEMs significantly reduce the PCB area for a typical WLAN design, stated Kang Hee Kim, RF product line manager at Microsemi’s Analog Mixed Signal Group. This area savings, combined with integrated on-chip input and output matching circuitry, reduces RF design complexities while at the same time reducing the bill of material cost for portable device designers faced with challenging size constraints.
Both modules are addressed in a small form factor requirements driven by portable devices featuring WiFi connectivity, and are provided in a low-profile 3x3mm 16-pin MLPQ package. Each module also features an integrated power amplifier, 50 ohm input and output matching, and single-pole-double-throw (SPDT) switch. Additionally, the new LX5552 integrates a low noise amplifier (LNA) for enhanced system performance.
Both the new devices ease RF design complexity by integrating multiple active components and the external tuning passives, resulting in significant PCB area savings, and minimized solution cost.
LX5551 KEY FEATURES:
2.4-2.5 GHz operation;
50 ohm input and output matching;
PA power out 18dBm at antenna for 3% error vector magnitude (EVM);
PA 27dB orthogonal frequency division multiplexing (OFDM) power gain;
PA temperature compensated output power detector with wide dynamic range;
SPDT switch with low insertion loss and excellent isolation;
Low profile (0.9x3x3mm) 16 pin restriction of hazardous substances (RoHS)-compliant micro leadframe quad (MLPQ) package.
LX 5552 KEY FEATURES:
2.4-2.5 GHz operation;
50 ohm input and output matching;
LNA noise figure of 2dB including SPDT switch loss;
PA power out 17dBm at antenna for 3% EVM;
PA 27dB OFDM power gain;
PA temperature compensated output power detector with wide dynamic range;
SPDT switch with 0.6dB insertion loss and excellent isolation;
Low profile (0.55x3x3mm) 16 pin RoHS-compliant MLPQ package.
The company’s portfolio of WLAN, WiMAX and WiBro power amplifiers is utilized in various applications like wireless access points and half mini-cards for notebooks and netbooks. Reference designs with market-leading WLAN chipset manufacturers are available for many company’s power amplifiers.
