AN RFMD® APPLICATION NOTE RFGA2012 Application Note Product Description The RFGA2012 is DFN package power linear amplifier specifically designed to achieve high OIP3. It offers ultra-linear performance at low DC power. The RFGA2012 features a VBIAS pin that enables users to optimize the quiescent current for specific requirement. The VBIAS pin also serves as a power-down pin. This amplifier is ideal for Low Power Linear Gain Stage, IF, cellular, DCS, PCS, UMTS, WiFi, WiMax, TD-SCDMA, LTE Amplifiers, and Low Power LNA. The RFGA2012 is capable of operating in other bands such as 430MHz to 470MHz, 824MHz to 894MHz, 869MHz to 960MHz, and 2400MHz to 2500MHz. Its external matching allows for use across various standard frequency bands within 150MHz to 3GHz. The following performance data was collected at normal operation condition (room temperature, supply voltage and VBIAS of 3.3V, and two tone power of 0dBm). 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 13 RFGA2012 Application Note RFGA2012 Typical Performance - 430MHz to 470MHz Application Circuit VPD VCC 4.7uF 4.7uF 1uF 10pF 47pF 0Ohm 150nH 100pF 1 8 2 7 3 6 4 5 10nH RF_In 100pF RF IN 3.6pF RF Out/Vcc RF_OUT 33nH 3.6pF 1.8K Ohm 56pF 0.5pF Figure 1. Schematic Figure 2. 430MHz to 470MHz 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 13 RFGA2012 Application Note S-Parameters: 430MHz to 470MHz Input Return Loss versus Frequency Output Return Loss versus Frequency 0 0 -2 -1 -2 Output Return Loss (dB) Input Return Loss (dB) -4 -6 -8 -10 -12 -14 -3 -4 -5 -6 -7 -8 -16 -9 -18 -10 430 435 440 445 450 455 460 465 470 430 435 440 Frequency (MHz) 445 450 455 460 465 470 460 465 470 Frequency (MHz) Gain versus Frequency Isolation versus Frequency 0 40 38 -5 36 -10 Isolation (dB) Gain (dB) 34 32 30 28 -15 -20 -25 26 -30 24 -35 22 20 -40 430 435 440 445 450 455 Frequency (MHz) AN111112 460 465 470 430 435 440 445 450 455 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 13 RFGA2012 Application Note Data: 430MHz to 470MHz Output IP3 versus Frequency 34 33 33 32 32 31 31 Output IP3 (dBm) Gain (dB) Gain versus Frequency 34 30 29 28 30 29 28 27 27 26 26 25 25 24 24 430 435 440 445 450 455 460 430 470 465 435 440 445 455 460 465 470 465 470 Noise Figure versus Frequency 20 3.0 19 2.9 18 2.8 17 2.7 Noise Figure (dB) Output P1dB (dBm) Output P1dB versus Frequency 16 15 14 2.6 2.5 2.4 13 2.3 12 2.2 11 2.1 10 2.0 430 435 440 445 450 455 460 465 430 470 435 440 445 Frequency (MHz) 450 455 460 Frequency (MHz) Gain versus POUT Output IP3 versus POUT 30.1 Output IP3 (dBm) 30.2 25.2 Gain (dB) 450 Frequency (MHz) Frequency (MHz) 20.2 430 MHz 15.2 25.1 20.1 430 MHz 15.1 450 MHz 450 MHz 470 MHz 470 MHz 10.2 10.1 0 2 4 6 8 POUT (dBm) AN111112 10 12 14 0 2 4 6 8 10 12 14 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 13 RFGA2012 Application Note RFGA2012 Typical Performance - 824MHz to 894MHz Application Circuit Figure 3. Schematic Figure 4. 824MHz to 894MHz 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 13 RFGA2012 Application Note S-Parameters: 824MHz to 894MHz Input Return Loss versus Frequency Output Return Loss versus Frequency -12.6 0 -12.7 -2 Output Return Loss (dB) Input Return Loss (dB) -12.8 -12.9 -13.0 -13.1 -13.2 -13.3 -4 -6 -8 -10 -12 -14 -13.4 -13.5 -16 824 834 844 854 864 874 884 824 894 834 844 Frequency (MHz) 854 864 874 884 894 884 894 Frequency (MHz) Gain versus Frequency Isolation versus Frequency 30 -25.4 28 -25.6 26 -25.8 Isolation (dB) Gain (dB) 24 22 20 18 -26 -26.2 16 14 -26.4 12 10 -26.6 824 834 844 854 864 Frequency (MHz) AN111112 874 884 894 824 834 844 854 864 874 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 13 RFGA2012 Application Note Data: 824MHz to 894MHz Output IP3 versus Frequency 41 24 40 23 39 22 38 Output IP3 (dBm) Gain (dB) Gain versus Frequency 25 21 20 19 37 36 35 18 34 17 33 16 32 31 15 824 834 844 854 864 874 884 824 894 834 844 854 864 884 894 874 884 894 10 12 14 874 Frequency (MHz) Frequency (MHz) Output P1dB versus Frequency Noise Figure versus Frequency 19 4.0 18 3.5 16 Noise Figure (dB) Output P1dB (dBm) 17 15 14 13 12 11 3.0 2.5 2.0 1.5 10 9 1.0 824 834 844 854 864 874 884 894 824 834 844 Frequency (MHz) 854 864 Frequency (MHz) Gain versus POUT Output IP3 versus POUT 23 22 38.2 21 Output IP3 (dBm) Gain (dB) 20 19 18 17 16 33.2 28.2 23.2 824 MHz 824 MHz 15 14 859 MHz 18.2 859 MHz 894 MHz 894 MHz 13 13.2 0 2 4 6 8 POUT (dBm) AN111112 10 12 14 0 2 4 6 8 POUT (dBm) 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 7 of 13 RFGA2012 Application Note RFGA2012 Typical Performance - 869MHz to 960MHz Application Circuit Figure 5. Schematic Figure 6. 869MHz to 960MHz 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]. 8 of 13 RFGA2012 Application Note S-Parameters: 869MHz to 960MHz Input Return Loss versus Frequency Output Return Loss versus Frequency 0 -13.8 -14.0 Input Return Loss (dB) Input Return Loss (dB) -5 -14.2 -14.4 -14.6 -14.8 -10 -15 -20 -15.0 -15.2 -25 869 879 889 899 909 919 929 939 949 959 869 879 889 899 Frequency (MHz) 909 919 929 939 949 959 939 949 959 Frequency (MHz) Gain versus Frequency Isolation versus Frequency 30 -24.6 28 -24.8 26 -25.0 Isolation (dB) Gain (dB) 24 22 20 18 16 -25.2 -25.4 -25.6 14 -25.8 12 10 -26.0 869 879 889 899 909 919 Frequency (MHz) AN111112 929 939 949 959 869 879 889 899 909 919 929 Frequency (MHz) 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 9 of 13 RFGA2012 Application Note Data: 869MHz to 960MHz Output IP3 versus Frequency 40 23 39 22 38 21 37 Output IP3 (dBm) Gain (dB) Gain versus Frequency 24 20 19 18 36 35 34 17 33 16 32 15 31 30 14 869 879 889 899 909 919 929 939 949 869 959 879 889 899 Output P1dB versus Frequency 919 929 939 949 959 949 959 Noise Figure versus Frequency 19 4.0 18 3.8 17 3.6 16 3.4 Noise Figure (dB) Output P1dB (dBm) 909 Frequency (MHz) Frequency (MHz) 15 14 13 3.2 3.0 2.8 12 2.6 11 2.4 10 2.2 9 2.0 869 879 889 899 909 919 929 939 949 869 959 879 889 899 Frequency (MHz) 909 919 929 939 Frequency (MHz) Gain versus POUT Output IP3 versus POUT 24 23 39.1 22 34.1 Output IP3 (dBm) Gain (dB) 21 20 19 18 29.1 24.1 17 869 MHz 869 MHz 16 19.1 915 MHz 15 915 MHz 960 MHz 960 MHz 14 14.1 0 2 4 6 8 POUT (dBm) 10 12 14 0 2 4 6 8 10 12 14 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]. 10 of 13 RFGA2012 Application Note RFGA2012 Typical Performance - 2400MHz to 2500MHz Application Circuit VBIAS VCC C 4.7 uF C 4.7 uF C 1000 pF VBIAS NC 1 C 1 uF RFIN 2 C 0.2 pF Joh R 10 GND 3 NC 4 C 1 uF L 2.2 nH 8 AMP RF_In R1 160 RFOUT/VCC C 0.9 pF Joh RF_Out 7 NC 6 C 0.2 pF Joh R 2k GND 5 Figure 7. Schematic Figure 8. 2400MHz to 2500MHz 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]. 11 of 13 RFGA2012 Application Note S-Parameters: 2400MHz to 2500MHz Input Return Loss versus Frequency Output Return Loss versus Frequency 0 -12.5 -2 Output Return Loss (dB) Input Return Loss (dB) -13.0 -13.5 -14.0 -14.5 -4 -6 -8 -10 -12 -15.0 -14 -15.5 2400 2410 2420 2430 2440 2450 2460 2470 2480 2490 -16 2400 2500 2410 2420 2430 Frequency (MHz) 13.5 -17.70 13 -17.75 12.5 -17.80 12 11.5 10.5 -18.00 2440 2450 2460 Frequency (MHz) AN111112 2480 2490 2500 2480 2490 2500 -17.90 -17.95 2430 2470 -17.85 11 2420 2460 Isolation versus Frequency -17.65 Isolation (dB) Gain (dB) Gain versus Frequency 2410 2450 Frequency (MHz) 14 10 2400 2440 2470 2480 2490 2500 -18.05 2400 2410 2420 2430 2440 2450 2460 2470 Frequency (MHz) 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 12 of 13 RFGA2012 Application Note Data: 2400MHz to 2500MHz Output IP3 versus Frequency 39 16 38 15 37 14 36 Output IP3 (dBm) Gain (dB) Gain versus Frequency 17 13 12 11 35 34 33 10 32 9 31 8 30 7 2400 2410 2420 2430 2440 2450 2460 2470 2480 2490 29 2400 2500 2410 2420 2430 2440 2450 2460 2470 2480 2490 2500 2480 2490 2500 Frequency (MHz) Frequency (MHz) Output P1dB versus Frequency Noise Figure versus Frequency 19 3.0 18 2.5 16 Noise Figure (dB) Output P1dB (dBm) 17 15 14 13 12 11 2.0 1.5 1.0 0.5 10 9 2400 2410 2420 2430 2440 2450 2460 2470 2480 2490 2500 0.0 2400 2410 2420 2430 Frequency (MHz) 2440 2450 2460 2470 Frequency (MHz) Gain versus POUT Output IP3 versus POUT 17 39.6 16 15 34.6 Output IP3 (dBm) Gain (dB) 14 13 12 11 29.6 24.6 10 2400 MHz 2400 MHz 9 2450 MHz 19.6 2450 MHz 8 2500 MHz 2500 MHz 14.6 7 0 2 4 6 8 POUT (dBm) 10 12 14 0 2 4 6 8 10 12 14 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]. 13 of 13