RF2878 RF28783 V Low Noise Amplifier/ 3V PA Driver Amplifier 3V LOW NOISE AMPLIFIER/ 3V PA DRIVER AMPLIFIER RoHS Compliant & Pb-Free Product Package Style: SOT 5-Lead Features Low Noise and High Intercept Point Adjustable Bias Current Power Down Control Single 2.5V to 6.0V Power Supply 150MHz to 2500MHz Operation Extremely Small SOT 5-Lead Package RF IN 1 GND1 2 VPD 3 Applications TDMA/CDMA/FM Cellular PCS LNA Low Noise Transmit Driver Amplifier General Purpose Amplification Commercial and Consumer Systems 5 GND2 4 RF OUT Functional Block Diagram Product Description The RF2878 is a low noise amplifier with a very high dynamic range designed for digital cellular applications. The device functions as an outstanding front end low noise amplifier or power amplifier driver amplifier in the transmit chain of digital subscriber units where low transmit noise power is a concern. When used as an LNA, the bias current can be set externally. When used as a PA driver, the IC can operate directly from a single cell Li-ion battery and includes a power down feature that can be used to completely turn off the device. The IC is featured in a standard SOT 5-lead plastic package. NOTE: The RF2878 is a Pb-free product. If a non-Pb-free product with the same functionality and package is desired, please see the RF2361. Ordering Information RF2878 RF2878 PCBA-D RF2878 PCBA-L 9GaAs HBT GaAs MESFET InGaP HBT 3V Low Noise Amplifier/ 3V PA Driver Amplifier Fully Assembled Evaluation Board (Driver) Fully Assembled Evaluation Board (LNA) 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 A0 DS060206 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 1 of 14 RF2878 Absolute Maximum Ratings Parameter Supply Voltage, VCC Rating Unit -0.5 to +8.0 VDC Power Down Voltage, VPD <VCC VDC Input RF Level +10 dBm Operating Ambient Temperature -40 to +85 °C Storage Temperature -40 to +150 °C Parameter Min. Specification Typ. Max. 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. Unit Condition Overall RF Frequency Range 150 to 2500 MHz Schematic per LNA Application; T=25°C, RF=881MHz, VPD =2.8V, R1=1kΩ Low Noise Amplifier 881MHz Performance Gain 19.5 19.5 Noise Figure Input IP3 20 20 1.4 1.6 1.4 1.6 dB VCC =3.0V, ICC =7.6mA dB VCC =2.7V, ICC =7.5mA dB VCC =3.0V, ICC =7.6mA dB VCC =2.7V, ICC =7.5mA +6.0 dBm VCC =3.0V, ICC =7.6mA +5.5 dBm VCC =2.7V, ICC =7.5mA Low Noise Amplifier 1950MHz Performance Gain Schematic per LNA Application; T=25°C, RF=1950MHz, VPD =2.8V, R1=1kΩ 12.5 13 dB VCC =3.0V, ICC =6.4mA 12.5 13 dB VCC =2.7V, ICC =6.3mA Noise Figure Input IP3 1.3 1.5 dB VCC =3.0V, ICC =6.4mA 1.3 1.5 dB VCC =2.7V, ICC =6.3mA +16.5 dBm VCC =3.0V, ICC =6.4mA +16.0 dBm VCC =2.7V, ICC =6.3mA Driver Amplifier 836MHz Performance Gain Output IP3 Schematic per Driver Amplifier Application; T=25°C, RF=836MHz, VPD =2.8V 19.5 20.5 21.5 dB VCC =3.5V 19.5 20.5 21.5 dB VCC =3.0V 19.5 20.5 21.5 dB VCC =2.7V +32.0 35 25 +29.0 +27.8 Noise Figure Reverse Isolation 2 of 14 dBm VCC =3.5V dBm VCC =3.0V dBm VCC =2.7V 1.9 2.0 dB VCC =3.5V 1.85 2.0 dB VCC =3.0V 1.8 2.0 dB VCC =2.7V 25 dB VCC =3.5V 25 dB VCC =3.0V 25 dB VCC =2.7V 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. Rev A0 DS060206 RF2878 Parameter Min. Specification Typ. Max. Unit Driver Amplifier 836MHz Performance,, cont. Schematic per Driver Amplifier Application; T=25°C, RF=836MHz, VPD =2.8V Input VSWR 1.8:1 2.0:1 Output VSWR 1.25:1 2.0:1 P1dB Condition Using External LC network used on evaluation board. 13 14.4 dBm 12 12.5 dBm VCC =3.0V 10.5 11.5 dBm VCC =2.7V 2.5 to 6.0 V Power Supply VCC =3.5V T = 25 °C Voltage (VCC) Voltage (VPD) 2.7 2.8 2.9 V Current Consumption Driver Amplifier 12.5 21.5 27 mA VCC =3.5V; VPD =2.8V; VPD +VCC - Current Consumption from VPD is 2.0mA Typ. @ VPD =2.8V and 3.0mA Max @ VPD =2.9 V 18 20 22 mA VCC =3.5V; VPD =2.7V; VPD + VCC 19 23 29 mA 10 μA VCC =3.5V; VPD =2.9V; VPD + VCC VCC =3.5V; VPD ≤ 0.9 V Power Down Driver Amplifier 1880MHz Performance Gain Output IP3 Schematic per Driver Amplifier Application; T=25°C, RF=1880MHz, VPD =2.8V 13.0 14.0 14.5 dB VCC =3.5V 13.0 14.0 14.5 dB VCC =3.0V 13.0 14.0 14.5 dB VCC =2.7V 27 +35.0 38 dBm VCC =3.5V Noise Figure Reverse Isolation +31.0 dBm VCC =3.0V +28.8 dBm VCC =2.7V 1.85 2.0 dB VCC =3.5V 1.8 2.0 dB VCC =3.0V 1.75 2.0 dB VCC =2.7V 19 dB VCC =3.5V 19 dB VCC =3.0V 19 dB VCC =2.7V Input VSWR 1.6:1 2.0:1 Output VSWR 1.6:1 2.0:1 P1dB Rev A0 DS060206 Using External LC network used on evaluation board. 14 15.6 dBm VCC =3.5V 13 14.1 dBm VCC =3.0V 12 13.1 dBm VCC =2.7V 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 3 of 14 RF2878 Parameter Min. Specification Typ. Max. Unit Power Supply Condition T = 25 °C Voltage (VCC) 2.5 to 6.0 V Voltage (VPD) 2.7 2.8 2.9 V Current Consumption Driver Amplifier 11.5 19.5 25.5 mA VCC =3.5V; VPD =2.8V; VPD +VCC - Current Consumption from VPD is 2.0mA Typ.@ VPD =2.8V and 3.0mA Max @ VPD =2.9 V 16 18 20 mA 18 20.5 27 mA VCC =3.5V; VPD =2.7V; VPD + VCC VCC =3.5V; VPD =2.9V; VPD + VCC 10 μA VCC =3.5V; VPD ≤ 0.9 V Power Down 4 of 14 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. Rev A0 DS060206 RF2878 Pin 1 Function RF IN Description Interface Schematic RF input pin. This pin is DC coupled and matched to 50Ω at 836 MHz. To Bias Circuit RF OUT RF IN 2 GND1 3 VPD Ground connection. For best performance, keep traces physically short and connect immediately to ground plane. For low noise amplifier applications, this pin is used to control the bias current. See plots for bias current settings. An external resistor (R1) can be used to set the bias current for any VPD voltage. PD For driver amplifier applications, this is the Power Down pin for the IC. VPD =2.8V +/- 0.1V is required for proper operation. VPD< 0.9V turns off the Part. External RF bypassing is required. The trace length between the pin and the bypass capacitors should be minimized. The ground side of the bypass capacitors should connect immediately to ground plane. Nominal current required for VPD =2.8V is 2.0mA typical and 3.0mA Max (@ VPD =2.9V). 4 RF OUT 5 GND2 Amplifier Output pin. This pin is an open-collector output. It must be biased to either VCC or pin 4 through a choke or matching inductor. This pin is typically matched to 50Ω with a shunt bias/matching inductor and series blocking/matching capacitor. Refer to application schematics. Ground connection. For best performance, keep traces physically short and connect immediately to ground plane. Package Drawing 1.60 + 0.01 0.15 0.05 0.400 1 2.90 + 0.10 0.950 2.80 + 0.20 3° MAX 0° MIN 1.44 1.04 Dimensions in mm. 0.127 0.45 + 0.10 Rev A0 DS060206 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 5 of 14 RF2878 Application Schematic: Low Noise Amplifier ~881MHz Operation 22 nF J1 RF IN 1 5 2 VPD 2 pF 1k Ω 3 10 nF J2 RF OUT 4 100 pF 12 nH VCC 100 pF 10 nF Application Schematic: Low Noise Amplifier ~1950MHz Operation 22 nF J1 RF IN 1 5 2 VPD 1 pF 1k Ω 3 10 nF 100 pF J2 RF OUT 4 3.3 nH VCC 100 pF 6 of 14 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 10 nF Rev A0 DS060206 RF2878 Application Schematic: Driver Amplifier ~836MHz Operation 22 nF J1 RF IN 1 5 2 VPD 2 pF 0Ω 3 10 nF J2 RF OUT 4 100 pF 12 nH VCC 100 pF 10 nF Application Schematic: Driver Amplifier ~1880MHz Operation 22 nF J1 RF IN 1 5 2 VPD 1 pF 0Ω 3 10 nF 100 pF J2 RF OUT 4 3.3 nH VCC 100 pF Rev A0 DS060206 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 10 nF 7 of 14 RF2878 Evaluation Board Schematic: Low Noise Amplifier ~881MHz Operation P1 P1-1 P1-3 1 VPD 2 GND 3 VCC C7 4.7 μF J1 RF IN 50 Ω μstrip C3 22 nF 1 5 2 C4 2 pF R1 0Ω VPD 3 C1 10 nF 50 Ω μstrip 4 C2 220 pF L1 12 nH 2878401 r- VCC C5 220 pF 8 of 14 J2 RF OUT 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. C6 10 nF Rev A0 DS060206 RF2878 Evaluation Board Schematic: Driver Amplifier ~836MHz Operation P1 P1-1 P1-3 1 VPD 2 GND 3 VCC C7 4.7 μF J1 RF IN 50 Ω μstrip C3 22 nF 1 5 2 R1 0Ω C4 2 pF VPD 3 C1 10 nF 4 C2 220 pF J2 RF OUT L1 12 nH 2878400 r1 VCC C5 220 pF Rev A0 DS060206 50 Ω μstrip C6 10 nF 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 9 of 14 RF2878 Evaluation Board Layout - 900MHz Driver Board Size 0.948” x 1.063” Board Thickness 0.031”; Board Material FR-4 Evaluation Board Layout - 900MHz LNA 10 of 14 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. Rev A0 DS060206 RF2878 Rev A0 DS060206 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 11 of 14