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| RF3865 WIDE BANDWIDTH, HIGH LINEARITY LOW NOISE AMPLIFIER/LINEAR DRIVER Package Style: QFN, 20-Pin, 5mmx5mm VD1 VD2 17 NC NC 20 19 18 16 15 NC 14 NC 13 RF OUT 12 NC 11 AC GND2 Features Low Noise and High Intercept Point Adjustable Bias Current Single 2.5V to 6.0V Power Supply 700MHz to 3800MHz Operation QFN20, 5mmx5mm Package NC 1 NC 2 RF IN 3 NC 4 AC GND1 5 6 NC 7 INTERSTAGE OUT 8 NC 9 INTERSTAGE IN 10 NC Applications WiMAX LNA or Linear Driver CDMA, PCS, ECS, UMTS LNA WLAN LNA High Gain Linear Amplification Functional Block Diagram Product Description The RF3865 is a low noise amplifier with a high output IP3. The amplifier is self-biased from a single voltage supply with 50 input and output ports. The useful frequency range is from 700MHz to 3800MHz. A 1dB noise figure and 36dBm OIP3 performance is achieved with a 5V VDD, 180mA. Current can be increased to raise OIP3 while having minimal effect on noise figure. The IC is featured in a standard QFN, 20-pin, 5mmx5mm package. Ordering Information RF3865 RF3865PCK-410 RF3865PCK-411 Wide Bandwidth, High Linearity Low Noise Amplifier/Linear Driver Fully Assembled Evaluation Board with 5 Sample Parts 1.8GHz to 3.8GHz 700MHz to 1100MHz Optimum Technology Matching(R) Applied GaAs HBT GaAs MESFET InGaP HBT SiGe BiCMOS Si BiCMOS SiGe HBT GaAs pHEMT Si CMOS Si BJT GaN HEMT RF MICRO DEVICES(R), RFMD(R), Optimum Technology Matching(R), Enabling Wireless ConnectivityTM, PowerStar(R), POLARISTM TOTAL RADIOTM and UltimateBlueTM 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. (c)2006, RF Micro Devices, Inc. Rev A0 DS070622 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. NC 1 of 6 RF3865 Absolute Maximum Ratings Parameter Supply Voltage Input RF Level (See Note 1) Current Drain, IDD Operating Ambient Temperature Storage Temperature Rating 0 to +7 +10 150 per stage -40 to +85 -40 to +150 Unit VDC dBm mA C C Caution! ESD sensitive device. The information in this publication is believed to be accurate and reliable. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents, or other rights of third parties, resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended application circuitry and specifications at any time without prior notice. RoHS status based on EUDirective2002/95/EC (at time of this document revision). Note 1. Max continuous RF IN is +10dBm. The max transient RF IN is +20dBm. Parameter High Band Frequency Current Gain Noise Figure Output IP3 Output P1dB S11 S22 S12 Min. 3300 Specification Typ. Max. 3800 Unit MHz mA dB dB dBm dBm dB dB dB VDD =5V Condition 180 20 1.1 37 22 -17 -17 -33 1800 180 27.5 1.0 34 21.0 28.5 1.2 36 22.5 -10 -20 -40 700 180 33 1.2 36 22 -15 -18 -40 220 +25C, VDD =5V, IDD =180mA, 3500MHz unless specified f1 =3500MHz, f2 =3501MHz Mid Band Frequency Current Gain Noise Figure Output IP3 Output P1dB S11 S22 S12 2700 220 31.0 MHz mA dB dB dBm 25.0 dBm dB dB dB 1100 220 MHz mA dB dB dBm dBm dB dB dB f1 =851MHz, f2 =851MHz VDD =5V +25C, VDD =5V, IDD =180mA, 850MHz unless specified f1 =2000MHz, f2 =2001MHz VDD =5V +25C, VDD =5V, IDD =180mA, 2000MHz unless specified Low Band Frequency Current Gain Noise Figure OIP3 OP1dB S11 S22 S12 2 of 6 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A0 DS070622 RF3865 Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Pkg Base Function NC NC RF IN NC AC GND1 NC INTERSTAGE OUT NC INTERSTAGE IN NC AC GND2 NC RF OUT NC NC NC VD2 NC VD1 NC GND Description Not connected. Not connected. RF input pin. 50 matched. This pin is DC-blocked. Not connected. AC ground. Shunt cap may be added for tuning. Not connected. Interstage RF output. Not connected. Interstage RF input. Not connected. AC ground. Shunt resistor may be added to increase IDD and OIP3. Not connected. RF output pin. 50 matched. This pin is DC-blocked Not connected. Not connected. Not connected. Bias voltage. 2.5V to 6.0V applied through bias inductor. Not connected. Bias voltage. 2.5V to 6.0V applied through bias inductor. Not connected. Ground connection and heat sink. Package Drawing -A- 2 PLCS 0.10 C A 5.00 SQ. 2.75 TYP 0.10 C B 2 PLCS 0.90 0.80 0.70 0.60 0.05 C 0.20 REF 0.05 0.00 12 MAX 0.10 C B 2 PLCS -B-C- SEATING PLANE 2.37 TYP 4.75 SQ. 0.10 C A 0.60 0.24 TYP 0.35 0.23 PIN 1 ID 0.20 R 0.75 0.50 TYP 0.65 Dimensions in mm. 3.20 SQ. 3.00 Rev A0 DS070622 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 3 of 6 RF3865 Evaluation Board Schematic VDD R1 0 VDD C1 10 nF C3 L1 C2 10 nF C4 L2 20 1 2 R2 RF IN 3 4 C5 5 6 19 18 17 16 15 14 13 12 R3 11 L4 RF OUT L3 7 8 R5 9 10 C7 C8 C6 Components 700-1100 MHz 1.8-3.8 GHz C3 (pF) C4 (pF) C5 (pF) C6 (pF) C7 (pF) C8 (pF) L1 (nH) L2 (nH) L3 (nH) L4 (nH) R2 (ohm) R3 (ohm) R5 (ohm) 10 10 100 DNP DNP DNP 10 12 18 DNP 0 DNP 10 pF 18 18 100 DNP 10 0.5 8.2 4.7 4.7 DNP 0 DNP 15 pF R3 is DNP for standard 180mA current draw. If R3 is added, the IDD will increase. A 20 R3 will raise the current to achieve higher linearity. 4 of 6 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A0 DS070622 RF3865 5V Noise Figure versus Temperature 1.6 32.0 31.0 1.4 30.0 29.0 28.0 27.0 26.0 0.8 25.0 24.0 -40 25 85 2000.0 2500.0 3000.0 23.0 22.0 1500.0 2000.0 2500.0 3000.0 -40 25 85 5V Gain versus Temperature Noise Figure (dB) 1.2 1.0 0.6 0.4 1500.0 Frequency (MHz) Gain (dB) Frequency (MHz) 5V OIP3 versus Temperature 38.5 38.0 23.0 37.5 22.5 37.0 23.5 5V P1dB versus Temperature P1dB (dBm) OIP3 (dBm) 36.5 36.0 35.5 22.0 21.5 21.0 35.0 34.5 34.0 1500.0 2000.0 2500.0 3000.0 -40 25 85 20.5 -40 25 85 20.0 1500.0 2000.0 2500.0 3000.0 Frequency (MHz) Frequency (MHz) 5V Noise Figure versus Temperature 1.8 22.5 22.0 1.6 21.5 1.4 21.0 20.5 1.2 5V Gain versus Temperature Noise Figure (dB) Gain (dB) -40 25 85 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 20.0 19.5 19.0 1.0 0.8 18.5 18.0 17.5 17.0 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 0.6 -40 25 85 0.4 Frequency (GHz) Frequency (GHz) Rev A0 DS070622 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 5 of 6 RF3865 5V OIP3 versus Temperature 40.0 24.5 24.4 39.5 24.3 24.2 39.0 24.1 5V P1dB versus Temperature 38.5 P1dB (dBm) -40 25 85 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 OIP3 (dBm) 24.0 23.9 23.8 23.7 23.6 23.5 38.0 37.5 37.0 23.4 23.3 23.2 3.2 3.3 3.4 3.5 3.6 3.7 3.8 -40 25 85 3.9 36.5 Frequency (GHz) Frequency (GHz) 6 of 6 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A0 DS070622 |
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