RF2878PCBA-L

RF28783 V Low Noise Amplifier/ 3V PA Driver Amplifier RF2878 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 5 GND2 GND1 2 VPD 3 4 RF OUT Applications TDMA/CDMA/FM Cellular PCS LNA Low Noise Transmit Driver Amplifier General Purpose Amplification Commercial and Consumer Systems 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 3V Low Noise Amplifier/ 3V PA Driver Amplifier Fully Assembled Evaluation Board (Driver) Fully Assembled Evaluation Board (LNA) Optimum Technology Matching® Applied GaAs HBT GaAs MESFET InGaP HBT 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 sales-support@rfmd.com. 1 of 14 RF2878 Absolute Maximum Ratings Parameter Supply Voltage, VCC Power Down Voltage, VPD Input RF Level Operating Ambient Temperature Storage Temperature Rating -0.5 to +8.0 < VCC +10 -40 to +85 -40 to +150 Unit VDC VDC dBm °C °C 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 Overall RF Frequency Range Min. Specification Typ. 150 to 2500 Max. Unit MHz Condition Low Noise Amplifier 881MHz Performance Gain Noise Figure Input IP3 19.5 19.5 20 20 1.4 1.4 +6.0 +5.5 1.6 1.6 dB dB dB dB dBm dBm Schematic per LNA Application; T=25°C, RF=881MHz, VPD =2.8V, R1=1k Ω VCC =3.0V, ICC =7.6mA VCC =2.7V, ICC =7.5mA VCC =3.0V, ICC =7.6mA VCC =2.7V, ICC =7.5mA VCC =3.0V, ICC =7.6mA VCC =2.7V, ICC =7.5mA Schematic per LNA Application; T=25°C, RF=1950MHz, VPD =2.8V, R1=1k Ω 12.5 12.5 13 13 1.3 1.3 +16.5 +16.0 1.5 1.5 dB dB dB dB dBm dBm VCC =3.0V, ICC =6.4mA VCC =2.7V, ICC =6.3mA VCC =3.0V, ICC =6.4mA VCC =2.7V, ICC =6.3mA VCC =3.0V, ICC =6.4mA VCC =2.7V, ICC =6.3mA Schematic per Driver Amplifier Application; T=25°C, RF=836MHz, VPD =2.8V 19.5 19.5 19.5 20.5 20.5 20.5 +32.0 +29.0 +27.8 21.5 21.5 21.5 35 dB dB dB dBm dBm dBm 2.0 2.0 2.0 dB dB dB dB dB dB VCC =3.5V VCC =3.0V VCC =2.7V VCC =3.5V VCC =3.0V VCC =2.7V VCC =3.5V VCC =3.0V VCC =2.7V VCC =3.5V VCC =3.0V VCC =2.7V Low Noise Amplifier 1950MHz Performance Gain Noise Figure Input IP3 Driver Amplifier 836MHz Performance Gain Output IP3 25 Noise Figure 1.9 1.85 1.8 Reverse Isolation 25 25 25 2 of 14 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 DS060206 RF2878 Parameter Driver Amplifier 836MHz Performance,, cont. Input VSWR Output VSWR P1dB 13 12 10.5 1.8:1 1.25:1 14.4 12.5 11.5 2.5 to 6.0 2.7 12.5 2.8 21.5 2.9 27 2.0:1 2.0:1 dBm dBm dBm V V 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 VCC =3.5V; VPD =2.7V; VPD + VCC VCC =3.5V; VPD =2.9V; VPD + VCC VCC =3.5V; VPD ≤ 0.9 V Schematic per Driver Amplifier Application; T=25°C, RF=1880MHz, VPD =2.8V 13.0 13.0 13.0 Output IP3 27 14.0 14.0 14.0 +35.0 +31.0 +28.8 Noise Figure 1.85 1.8 1.75 Reverse Isolation 19 19 19 Input VSWR Output VSWR P1dB 14 13 12 1.6:1 1.6:1 15.6 14.1 13.1 2.0:1 2.0:1 dBm dBm dBm Using External LC network used on evaluation board. VCC =3.5V VCC =3.0V VCC =2.7V 2.0 2.0 2.0 14.5 14.5 14.5 38 dB dB dB dBm dBm dBm dB dB dB dB dB dB VCC =3.5V VCC =3.0V VCC =2.7V VCC =3.5V VCC =3.0V VCC =2.7V VCC =3.5V VCC =3.0V VCC =2.7V VCC =3.5V VCC =3.0V VCC =2.7V Using External LC network used on evaluation board. VCC =3.5V VCC =3.0V VCC =2.7V T = 25 °C Min. Specification Typ. Max. Unit Condition Schematic per Driver Amplifier Application; T=25°C, RF=836MHz, VPD =2.8V Power Supply Voltage (VCC) Voltage (VPD) Current Consumption Driver Amplifier 18 19 Power Down 20 23 22 29 10 mA mA μA Driver Amplifier 1880MHz Performance Gain Rev A0 DS060206 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 14 RF2878 Parameter Power Supply Voltage (VCC) Voltage (VPD) Current Consumption Driver Amplifier 2.7 11.5 2.5 to 6.0 2.8 19.5 2.9 25.5 V V 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 VCC =3.5V; VPD =2.7V; VPD + VCC VCC =3.5V; VPD =2.9V; VPD + VCC VCC =3.5V; VPD ≤ 0.9 V Min. Specification Typ. Max. Unit T = 25 °C Condition 16 18 Power Down 18 20.5 20 27 10 mA mA μA 4 of 14 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 DS060206 RF2878 Pin 1 Function RF IN Description RF input pin. This pin is DC coupled and matched to 50 Ω at 836 MHz. Interface Schematic To Bias Circuit RF OUT RF IN 2 3 GND1 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. 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). PD 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 50 Ω 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 0.400 1 0.15 0.05 2.90 + 0.10 0.950 2.80 + 0.20 3° MAX 0° MIN 0.45 + 0.10 0.127 1.44 1.04 Dimensions in mm. Rev A0 DS060206 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 14 RF2878 Application Schematic: Low Noise Amplifier ~881MHz Operation J1 RF IN 22 nF 1 5 2 1k Ω 10 nF 100 pF 2 pF 3 4 12 nH VCC 100 pF 10 nF VPD J2 RF OUT Application Schematic: Low Noise Amplifier ~1950MHz Operation J1 RF IN 22 nF 1 5 2 1k Ω 10 nF 100 pF 1 pF 3 4 3.3 nH VCC 100 pF 10 nF VPD J2 RF OUT 6 of 14 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 DS060206 RF2878 Application Schematic: Driver Amplifier ~836MHz Operation J1 RF IN 22 nF 1 5 2 0Ω 10 nF 100 pF 2 pF 3 4 12 nH VCC 100 pF 10 nF VPD J2 RF OUT Application Schematic: Driver Amplifier ~1880MHz Operation J1 RF IN 22 nF 1 5 2 0Ω 10 nF 100 pF 1 pF 3 4 3.3 nH VCC 100 pF 10 nF VPD J2 RF OUT Rev A0 DS060206 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 7 of 14 RF2878 Evaluation Board Schematic: Low Noise Amplifier ~881MHz Operation P1 P1-1 1 2 P1-3 C7 4.7 μF 3 VPD GND VCC J1 RF IN 50 Ω μstrip C3 22 nF 1 5 2 R1 0Ω VPD C1 10 nF C2 220 pF 2878401 r- C4 2 pF 3 4 L1 12 nH 50 Ω μstrip J2 RF OUT VCC C5 220 pF C6 10 nF 8 of 14 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 DS060206 RF2878 Evaluation Board Schematic: Driver Amplifier ~836MHz Operation P1 P1-1 1 2 P1-3 C7 4.7 μF 3 VPD GND VCC J1 RF IN 50 Ω μstrip C3 22 nF 1 5 2 R1 0Ω VPD C1 10 nF C2 220 pF 2878400 r1 C4 2 pF 3 4 L1 12 nH 50 Ω μstrip J2 RF OUT VCC C5 220 pF C6 10 nF Rev A0 DS060206 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 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 sales-support@rfmd.com. 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 sales-support@rfmd.com. 11 of 14