RF2486

RF2486 8 Typical Applications • CDMA/TDMA/DCS1900 PCS Systems • PHS 1500/WLAN 2400 Systems • General Purpose Downconverter • Micro-Cell PCS Base Stations • Portable Battery-Powered Equipment PCS LOW NOISE AMPLIFIER/MIXER Product Description The RF2486 is a monolithic integrated receiver front-end for PCS, PHS, and WLAN applications. The IC contains all of the required components to implement the RF functions of the receiver front-end except for the passive filtering and LO generation. It contains an LNA (low-noise amplifiers), a double-balanced Gilbert cell mixer, a balanced IF output, an LO isolation buffer amplifier, and an LO output buffer amplifier for providing the buffered LO signal as an output. The IC is designed to operate from a single 3.6V power supply. 0.157 0.150 0.0098 0.0040 1 0.344 0.337 0.012 0.008 0.025 0.0688 0.0532 0.2440 0.2284 8°MAX 0°MIN 8 0.0098 0.0075 0.050 0.016 Optimum Technology Matching® Applied Package Style: SSOP-24 üSi Bi-CMOS NC 1 VCC1 2 VCC2 3 GND1 4 LNA IN 5 GND2 6 GND3 7 NC 8 GND4 9 VCC3 10 LO BUFF EN 11 LO IN 12 Si BJT GaAs HBT SiGe HBT GaAs MESFET Si CMOS 24 NC 23 GND9 22 VCC4 21 GND8 20 LNA OUT 19 GND7 18 MIX RF IN 17 GND6 16 IF15 IF+ 14 GND5 13 LO BUFF OUT Features • Complete Receiver Front-End • High Dynamic Range • Single 3.6V Power Supply • External LNA IP3 Adjustment • 1500MHz to 2500MHz Operation Ordering Information RF2486 PCS Low Noise Amplifier/Mixer RF2486 PCBA-L Fully Assembled Evaluation Board 1.96GHz RF2486 PCBA-H Fully Assembled Evaluation Board 2.4GHz RF Micro Devices, Inc. 7628 Thorndike Road Greensboro, NC 27409, USA Tel (336) 664 1233 Fax (336) 664 0454 http://www.rfmd.com Functional Block Diagram Rev A7 010717 8-105 FRONT-ENDS RF2486 Absolute Maximum Ratings Parameter Supply Voltage Input LO and RF Levels Ambient Operating Temperature Storage Temperature Rating -0.5 to 5.5 +6 -40 to +85 -40 to +150 Unit VDC dBm °C °C Caution! ESD sensitive device. RF Micro Devices believes the furnished information is correct and accurate at the time of this printing. However, RF Micro Devices reserves the right to make changes to its products without notice. RF Micro Devices does not assume responsibility for the use of the described product(s). Parameter Overall RF Frequency Range LO Frequency Range IF Frequency Range Specification Min. Typ. Max. 1500 1200 DC 24 -17 27 -16 3.6 2500 2500 500 28 Unit Condition T = 25°C, VCC =3.6V, RF=1959MHz, LO=1749MHz @ +1 dBm MHz MHz MHz 1kΩ balanced load, 2.5dB Image Filter Loss. dB dBm dB Cascaded Performance Cascade Conversion Gain Cascade Input IP3 Cascade Noise Figure First Section (LNA) Single Sideband The LNA section may be left unused. Power is not connected to pin 1. The performance is then as specified for the Second Section (Mixer). Input is internally matched for optimum noise figure from a 50 Ω source. IP3 may be increased 10dB by connecting pin 22 to VCC through the matching inductor. The LNA’s current then increases by 10mA. Other in-between IP3 versus ICC trade-offs may be made. See pin description for pin 20. R2=Open R2=Short 8 FRONT-ENDS Noise Figure Input VSWR Input IP3 1.8 1.5:1 +4 dB 2.0:1 dBm Gain Reverse Isolation Output VSWR +8.5 13.5 23