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RF3378 RF3378General Purpose Amplifier GENERAL PURPOSE AMPLIFIER GND RoHS Compliant & Pb-Free Product Package Style: SOT89 Features Internally Matched Input and Output 12dB Small Signal Gain +26dBm Output IP3 +13dBm Output P1dB Applications Basestation Applications Broadband, Low-Noise Gain Blocks 1 2 3 RF OUT GND 4 DC to >6000MHz Operation RF IN Functional Block Diagram IF or RF Buffer Amplifiers Driver Stage for Power Amplifiers Product Description Final PA for Low-Power Applications The RF3378 is a general purpose, low-cost RF amplifier IC. The device is manufactured on an advanced Gallium Arsenide Heterojunction Bipolar Transistor (HBT) process, and has been designed for use as an easily-cascadable 50Ω gain block. Applications include IF and RF amplification in wireless voice and data communication products operating in frequency bands up to 6000MHz. The device is self-contained with 50Ω input and output impedances and requires only two external DCbiasing elements to operate as specified. High Reliability Applications Ordering Information RF3378 RF337XPCBA-41X 9GaAs HBT GaAs MESFET InGaP HBT General Purpose Amplifier Fully Assembled Evaluation Board Optimum Technology Matching® Applied SiGe BiCMOS Si BiCMOS SiGe HBT GaAs pHEMT Si CMOS Si BJT GaN HEMT 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. ©2006, RF Micro Devices, Inc. Rev A5 DS050524 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. www.BDTIC.com/RFMD 1 of 8 RF3378 Absolute Maximum Ratings Parameter Input RF Power Rating Unit +13 dBm Operating Ambient Temperature -40 to +85 °C Storage Temperature -60 to +150 °C 60 mA ICC Caution! ESD sensitive device. Exceeding any one or a combination of the Absolute Maximum Rating conditions may cause permanent damage to the device. Extended application of Absolute Maximum Rating conditions to the device may reduce device reliability. Specified typical performance or functional operation of the device under Absolute Maximum Rating conditions is not implied. RoHS status based on EUDirective2002/95/EC (at time of this document revision). 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. Parameter Min. Specification Typ. Max. Unit Overall Condition T=25 °C, ICC =40mA (See Note 1.) Frequency Range 3dB Bandwidth Gain DC to >6000 MHz 6 GHz 11.6 12.6 dB Freq=500MHz 11.5 12.5 dB Freq=1000MHz 11.0 12.0 dB Freq=2000MHz 11.5 dB Freq=3000MHz (See Note) 11.2 dB Freq=4000MHz (See Note) 11.3 dB Freq=6000MHz (See Note) Noise Figure 3.7 dB Input VSWR <1.75:1 Output VSWR Freq=2000MHz In a 50Ω system, DC to 6000MHz <1.77:1 In a 50Ω system, DC to 6000MHz Output IP3 +25.0 +26.0 dBm Freq=2000MHz Output P1dB +12.0 +13.0 dBm Freq=2000MHz 16.5 dB Reverse Isolation Thermal Freq=2000MHz ICC =40mA, PDISS =147mW. (See Note 3.) ThetaJC 121 °C/W Maximum Measured Junction Temperature at DC Bias Conditions 103 °C TCASE =+85°C 70,000 years TCASE =+85°C Mean Time To Failures Power Supply Device Operating Voltage Operating Current With 22Ω bias resistor 3.9 4.0 V At pin 8 with ICC =40mA 4.8 40 5.1 V At evaluation board connector, ICC =40mA 60 mA See Note 2. Note 1: All specification and characterization data has been gathered on standard FR-4 evaluation boards. These evaluation boards are not optimized for frequencies above 2.5GHz. Performance above 2.5GHz may improve if a high performance PCB is used. Note 2: The RF3378 must be operated at or below 60mA in order to achieve the thermal performance listed above. While the RF3378 may be operated at higher bias currents, 40mA is the recommended bias to ensure the highest possible reliability and electrical performance. Note 3: Because of process variations from part to part, the current resulting from a fixed bias voltage will vary. As a result, caution should be used in designing fixed voltage bias circuits to ensure the worst case bias current does not exceed 60mA over all intended operating conditions. 2 of 8 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. www.BDTIC.com/RFMD Rev A5 DS050524 RF3378 Pin 1 Function RF IN 2 3 GND RF OUT Description Interface Schematic RF input pin. This pin is NOT internally DC-blocked. A DC-blocking capacitor, suitable for the frequency of operation, should be used in most applications. DC-coupling of the input is not allowed, because this will override the internal feedback loop and cause temperature instability. Ground connection. RF output and bias pin. Biasing is accomplished with an external series resistor and choke inductor to VCC. The resistor is selected to set the DC current into this pin to a desired level. The resistor value is determined by the following equation: RF OUT ( V SUPPLY – V DEVICE ) R = -----------------------------------------------------I CC 4 GND RF IN Care should also be taken in the resistor selection to ensure that the current into the part never exceeds 60mA over the planned operating temperature. This means that a resistor between the supply and this pin is always required, even if a supply near 3.9V is available, to provide DC feedback to prevent thermal runaway. Because DC is present on this pin, a DC-blocking capacitor, suitable for the frequency of operation, should be used in most applications. The supply side of the bias network should also be well bypassed. Ground connection. Package Drawing 1.04 0.80 0.50 0.30 3.10 2.90 0.48 0.36 2 PL 1.60 1.40 4.60 4.40 2.60 2.40 1.80 1.45 1.75 1.40 Dimensions in mm. Shaded lead is pin 1. Rev A5 DS050524 0.43 0.38 0.53 0.41 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. www.BDTIC.com/RFMD 3 of 8 RF3378 Application Schematic VCC 4 22 Ω 1 100 pF 2 3 100 pF + 1 μF 100 nH RF IN RF OUT 100 pF Evaluation Board Schematic (Download Bill of Materials from www.rfmd.com.) P1 P1-1 1 VCC1 2 GND 3 4 VCC CON3 J1 RF IN 50 Ω μstrip R1 22 Ω C1 100 pF 337x410, r.1 4 of 8 1 2 3 L1 100 nH C3 100 pF + C4 1 μF 50 Ω μstrip C2 100 pF 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. www.BDTIC.com/RFMD J2 RF OUT Rev A5 DS050524 RF3378 Evaluation Board Layout Board Size 1.195" x 1.000" Board Thickness 0.033”, Board Material FR-4 Rev A5 DS050524 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. www.BDTIC.com/RFMD 5 of 8 RF3378 Gain versus Frequency Across Temperature Output P1dB versus Frequency Across Temperature (ICC = 40 mA) 14.0 (ICC=40mA) 16.0 14.0 12.0 Output Power (dBm) Gain (dB) 12.0 10.0 8.0 10.0 8.0 6.0 4.0 6.0 -40°C -40 25 85 2.0 25°C 85°C 4.0 0.0 0.0 1000.0 2000.0 4000.0 5000.0 6000.0 7000.0 0.0 1000.0 2000.0 3000.0 4000.0 5000.0 6000.0 7000.0 Frequency (MHz) Frequency (MHz) Output IP3 versus Frequency Across Temperature Noise Figure versus Frequency Across Temperature (ICC = 40 mA) 30.0 (ICC=40mA) 6.0 25.0 5.0 20.0 4.0 Noise Figure (dB) OIP3 (dBm) 3000.0 15.0 10.0 -40°C 5.0 3.0 2.0 1.0 -40°C 25°C 85°C 25°C 85°C 0.0 0.0 0.0 1000.0 2000.0 3000.0 4000.0 5000.0 6000.0 7000.0 0.0 500.0 1000.0 1500.0 2000.0 2500.0 3000.0 3500.0 Frequency (MHz) Frequency (MHz) Input VSWR versus Frequency Across Temperature Output VSWR versus Frequency Across Temperature (ICC=40mA) 2.5 (ICC=40mA) 2.0 1.8 2.0 VSWR VSWR 1.6 1.4 1.5 1.2 -40°C 25°C 85°C 1.0 0.0 1000.0 2000.0 3000.0 4000.0 Frequency (MHz) 6 of 8 5000.0 6000.0 7000.0 -40°C 25°C 85°C 1.0 0.0 1000.0 2000.0 3000.0 4000.0 5000.0 6000.0 7000.0 Frequency (MHz) 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. www.BDTIC.com/RFMD Rev A5 DS050524 RF3378 Reverse Isolation versus Frequency Across Temperature 0.0 Junction Temperature versus Power Dissipated (TAMBIENT=+85°C) 150.000 (ICC=40mA) Junction Temperature (°C) Reverse Isolation (dB) -5.0 -10.0 -15.0 -20.0 -25.0 125.000 100.000 75.000 -40°C 25°C 85°C -30.0 50.000 0.0 1000.0 2000.0 3000.0 4000.0 5000.0 6000.0 7000.0 0.100 0.125 Frequency (MHz) 0.150 0.175 0.200 0.225 0.250 Power Dissipated (W) Power Dissipation versus Device Voltage Across Temperature (TAMBIENT=+85°C) Bias Current versus Supply Voltage Across Temperature 0.25 (At evaluation board connector, RBIAS=22Ω) 70.0 60.0 0.20 0.15 ICC (mA) Power Dissipated ( Ω) 50.0 0.10 40.0 30.0 20.0 0.05 10.0 0.00 0.0 3.50 3.55 3.60 3.65 3.70 3.75 3.80 3.85 3.90 VPIN (V) 60.0 -40°C 25°C 85°C 3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 5.4 5.6 VCC (V) Bias Current versus Devices Voltage Across Temperature (At Pin 3 of the RF3374) 50.0 ICC (mA) 40.0 30.0 20.0 10.0 -40°C 25°C 85°C 0.0 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2 4.3 VPIN (V) Rev A5 DS050524 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. www.BDTIC.com/RFMD 7 of 8 RF3378 8 of 8 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. www.BDTIC.com/RFMD Rev A5 DS050524