AN RFMD® APPLICATION NOTE RFPA2013 Application Note Product Description The RFPA2013 is a 0.5W QFN package power amplifier specifically designed for Wireless Infrastructure applications. The RFPA2013 is a single-stage GaAs HBT power amplifier offering ultra-linear operation at a comparably low DC power making it ideal for next generation radios requiring high efficiency. This amplifier is ideal for GaAs Pre-Driver for Base Station Amplifiers, PA Stage for Commercial Wireless Infrastructure, 2nd or 3rd Stage LNAs, and Class AB Operation for GSM, DCS, PCS, UMTS, WiMAX, TD-SCDMA, and LTE Transceiver Applications. The RFPA2013 offers a low noise figure making it an excellent solution for 2nd and 3rd stage LNAs. The RFPA2013 is capable of operating in other bands such as 425MHz to 475MHz and 675MHz to 725MHz. Its external matching allows for use across various radio platforms within 400MHz to 2700MHz. The following performance data of other band application is collected at normal operation condition (room temperature and VBIAS and VREF at 5V). 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. ©2010, RF Micro Devices, Inc. AN111112 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 1 of 7 RFPA2013 Application Note RFPA2013 Typical Performance - 425MHz to 475MHz Application Circuit VREG VCC 330? 10uF 0? 1k? 0.1uF 1000pF 16 4 NC RFIN RFOUT/VCC RFIN RFOUT/VCC NC NC NC NC NC NC 12nH 10pF 13 VBIAS 3 270pF NC RFIN NC VREF 2 NC 1 33pF 14 15 5 6 7 8 12 100nH Coilcraft 100pF 11 RFOUT 10 10pF 9 12nH 100pF 510? Figure 1. Schematic Figure 2. 425MHz to 475MHz Application Circuit AN111112 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 2 of 7 RFPA2013 Application Note S-Parameters: 425MHz to 475MHz Input Return Loss versus Frequency Output Return Loss versus Frequency 10 0 5 -2 Output Return Loss (dB) Input Return Loss (dB) 0 -5 -10 -15 -20 -25 -4 -6 -8 -10 -30 -12 -35 -40 -14 425 430 435 440 445 450 455 460 465 470 475 425 430 435 440 Frequency (MHz) 450 455 460 465 470 475 465 470 475 Frequency (MHz) Gain versus Frequency Isolation versus Frequency 30 -20 28 -22 26 -24 24 -26 Isolation (dB) Gain (dB) 445 22 20 18 -28 -30 -32 16 -34 14 -36 12 -38 10 -40 425 430 435 440 445 450 455 Frequency (MHz) AN111112 460 465 470 475 425 430 435 440 445 450 455 460 Frequency (MHz) 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 3 of 7 RFPA2013 Application Note Data: 425MHz to 475MHz Output IP3 versus Frequency 47 22 46 21 45 20 44 Output IP3 (dBm) Gain (dB) Gain versus Frequency 23 19 18 17 43 42 41 16 40 15 39 14 38 37 13 425 430 435 440 445 450 455 460 465 470 425 475 430 435 440 445 450 455 460 465 470 475 465 470 475 Frequency (MHz) Frequency (MHz) Output P1dB versus Frequency Noise Figure versus Frequency 33 6 32 5.5 31 Noise Figure (dB) Output P1dB (dBm) 5 30 29 28 27 4.5 4 3.5 26 3 25 2.5 24 23 2 425 430 435 440 445 450 455 460 465 470 425 475 430 435 440 445 Frequency (MHz) 450 455 460 Frequency (MHz) Gain versus POUT Output IP3 versus POUT 22 21 47 20 Output IP3 (dBm) Gain (dB) 19 18 17 16 42 37 15 425 MHz 14 425 MHz 32 450 MHz 450 MHz 13 475 MHz 475 MHz 27 12 0 5 10 15 POUT (dBm) AN111112 20 25 0 5 10 15 20 25 POUT (dBm) 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 4 of 7 RFPA2013 Application Note RFPA2013 Typical Performance - 675MHz to 725MHz Application Circuit VREG VCC 330? 10uF 0 ? 1K? 0.1uF 1000pF 16 8.2pF 4 10pF 13 VBIAS 3 NC RFIN NC VREF 2 15nH NC 1 14 15 NC RFIN RFOUT/VCC RFIN RFOUT/VCC NC NC NC NC NC NC 5 6 7 8 24nH Coilcraft 12 100pF 11 RFOUT 10 5.6pF 9 47nH 15nH 150? Figure 3. Schematic Figure 4. 675MHz to 725MHz Application Circuit AN111112 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 5 of 7 RFPA2013 Application Note S-Parameters: 675MHz to 725MHz Output Return Loss versus Frequency 0 5 -2 0 -4 Output Return Loss (dB) Input Return Loss (dB) Input Return Loss versus Frequency 10 -5 -10 -15 -20 -25 -6 -8 -10 -12 -14 -30 -16 -35 -18 -40 -20 675 680 685 690 695 700 705 710 715 720 725 675 680 685 690 Frequency (MHz) 700 705 710 715 720 725 715 720 725 Frequency (MHz) Gain versus Frequency Isolation versus Frequency 30 -20 28 -22 26 -24 24 -26 Isolation (dB) Gain (dB) 695 22 20 18 -28 -30 -32 16 -34 14 -36 12 -38 10 -40 675 680 685 690 695 700 705 Frequency (MHz) AN111112 710 715 720 725 675 680 685 690 695 700 705 710 Frequency (MHz) 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 6 of 7 RFPA2013 Application Note Data: 675MHz to 725MHz Output IP3 versus Frequency 48 24 47 23 46 22 45 Output IP3 (dBm) Gain (dB) Gain versus Frequency 25 21 20 19 44 43 42 18 41 17 40 16 39 38 15 675 680 685 690 695 700 705 710 715 720 675 725 680 685 690 695 700 705 710 715 720 725 715 720 725 Frequency (MHz) Frequency (MHz) Output P1dB versus Frequency Noise Figure versus Frequency 33 8 32 7 31 Noise Figure (dB) Output P1dB (dBm) 6 30 29 28 27 5 4 3 26 2 25 1 24 23 0 675 680 685 690 695 700 705 710 715 720 675 725 680 685 690 Frequency (MHz) 695 700 705 710 Frequency (MHz) Gain versus POUT Output IP3 versus POUT 25 51.6 24 23 46.6 Output IP3 (dBm) Gain (dB) 22 21 20 19 41.6 36.6 18 675 MHz 675 MHz 17 16 700 MHz 31.6 700 MHz 725 MHz 725 MHz 26.6 15 0 5 10 15 POUT (dBm) 20 25 0 5 10 15 20 25 Pout (dBm) T AN111112 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 7 of 7