RMPA5255

RMPA5255 4.9–5.9 GHz WLAN Linear Power Amplifier Module Features Description ■ ■ ■ ■ ■ ■ ■ ■ The RMPA5255 power amplifier module is designed for high performance WLAN applications in the 4.9–5.9 GHz frequency band. The 10 pin, 5 x 5 x 1.5 mm package with internal matching on both input and output to 50Ω, and internal bias network components, allow for extremely simplified integration. An onchip detector provides power sensing capability. The PA’s low power consumption and excellent linearity are achieved using our InGaP Heterojunction Bipolar Transistor (HBT) technology. Full 4.9 to 5.9 GHz operation 34 dB small signal gain 230 mA total current at 18 dBm modulated power out 2.3% EVM at 18 dBm modulated power out 3.3 V collector supply voltage Integrated power detector with 20 dB dynamic range RoHS compliant 5 x 5 x 1.5 mm leadless package Internally matched to 50Ω and DC blocked RF input/output ■ Internal DC bias de-coupling ■ Optimized for use in 802.11a applications Device Electrical Characteristics1 802.11a OFDM Modulation (176 µs burst time, 100 µs idle time) 54 Mbps Data Rate, 16.7 MHz Bandwidth Parameter Min Typ Frequency 4.9 Collector Supply Voltage 3.0 3.3 Max Units 5.9 GHz 3.6 V Mirror Supply Voltage 2.9 V Mirror Supply Current 26 mA Gain 33 dB Total Current @ 18dBm Pout 230 mA EVM @ 18dBm Pout2 2.3 % Detector Output @ 18dBm Pout 450 mV 5 dBm Detector Threshold3 Notes: 1. VCC = 3.3V, VPC = 2.9V, TA = 25°C, PA is constantly biased, 50Ω system. 2. Percentage includes system noise floor of EVM = 0.8%. 3. POUT measured at PIN corresponding to power detection threshold. ©2005 Fairchild Semiconductor Corporation RMPA5255 Rev. E 1 www.fairchildsemi.com RMPA5255 4.9–5.9 GHz WLAN Linear Power Amplifier Module September 2005 Parameter Min Typ Max Units 5.9 GHz Frequency 4.9 Supply Voltage (VCC) 3.0 3.3 3.6 V Power Control Voltage (VPC) 2.6 2.9 3.1 V Gain 33.5 dB Total Quiescent Current 160 mA Bias Current at pin VPC2 26 mA P1dB Compression 26 dBm Current @ P1dB Compression 508 mA Shutdown Current (VPC = 0V)