AN RFMD® APPLICATION NOTE RFMD2014 Application Note Product Description The RFMD2014 is direct quadrature modulator for use in cellular base stations and other communications systems. RFMD2014 supports cellular, 3G, WiMax, and LTE air interface standards. This device features operation from 1450MHz to 2700MHz with excellent carrier and sideband suppression and ultra-low noise floor. The device is manufactured in an advanced GaAs HBT process. The RFMD2014 operates from a single 5V supply and is packaged in a low cost, 4mm x 4mm, 24-pin leadless package. This is to provide tuning information for better Input Return Loss on the LO port at 1450MHz. The following performance data was collected at room temperature, VCC is 5V and BBIP, BBIN, BBQP, BBQN is 1.5V. C8 is 1.5pF and L1 is 12nH. RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trademark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2012, RF Micro Devices, Inc. AN120103 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 1 of 3 RFMD2014 Application Note P1 1 2 HDR_1X2 1 2 P2 J7 GND HDR_1X2 J6 VCC1 VCC2 GND GND J7 R1 0 ohm GND J6 R2 0 ohm C3 4.7uF C4 4.7uF GND GND C10 C11 GND DNI GND C2 1000pF C1 100pF DNI GND GND J2 R3 0 ohm 5 GND N/C GND 20 19 GND 21 IP IN 23 22 GND GND 7 GND N/C 6 N/C GND J3 J3 J4 J4 GND 16 15 N/C 14 C7 12pF J5 J5 GND GND 13 N/C GND GND GND GND GND C6 1000pF 17 GND GND LON 12 J1 4 GND 24-LEAD QFN U1 RF_OUT 11 C9 DNI GND C5 100pF 18 VCC LOP QP J2 GND QN 3 10 GND 9 2 GND N/C 1 VCC 24 J1 L1 12nH GND C8 1.5pF GND GND GND 8 GND 25 GND GND Figure 1. 1450MHz Application Circuit AN120103 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 2 of 3 RFMD2014 Application Note Figure 2. S-Parameters (500MHz to 3GHz) AN120103 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 3 of 3