RF5187 RF5187Low Power Linear Amplifier LOW POWER LINEAR AMPLIFIER RoHS Compliant & Pb-Free Product Package Style: SOIC-8 Slug Features Single 3V to 6V Supply 10dBm to 20dBm Ultra Linear Output Power RF IN 1 8 RF OUT 14dB Gain at 2.14GHz RF IN 2 7 RF OUT Power Down Mode 800MHz to 2500MHz Operation PC 3 VCC 4 Applications 5 RF OUT PACKAGE BASE 2.14GHz UMTS Systems Digital Communication Systems PCS Communication Systems 6 RF OUT BIAS CIRCUIT Commercial and Consumer Systems GND Functional Block Diagram Product Description The RF5187 is a highly-linear, low-power amplifier IC. It has been designed for use as the driver RF amplifier in applications such as W-CDMA basestations. The RF5187 requires an input and output matching network and power supply feed line. The device is manufactured on an advanced Gallium Arsenide HBT process, and is packaged in a 8-pin plastic package with a backside ground. Ordering Information RF5187 RF5187PCBA-41X 9GaAs HBT GaAs MESFET InGaP HBT Low Power Linear 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 A7 DS060630 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 1 of 8 RF5187 Absolute Maximum Ratings Parameter Rating Unit Supply Voltage (VCC) -0.5 to +6.5 VDC Power Control Voltage (VPC) -0.5 to +5V V DC Supply Current 300 mA Input RF Power +20 dBm Output Load VSWR 20:1 Operating Ambient Temperature -40 to +85 °C Storage Temperature -40 to +100 °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 T=25°C, VCC =5.0V, ICC =240mA, Freq=2140MHz, POUT =13dBm Overall Frequency Range 800 Output Power 2500 13 OP1dB Small Signal Gain Condition 29 13 Input VSWR MHz dBm dBm 15 dB 1.5:1 With external matching network. Two-Tone Specification Output IP3 41 43 45 dBm 13dBm per tone. VPC 2.7 3.1 3.7 V To obtain 240mA idle current. Power Control “OFF” 0.2 0.5 V Threshold voltage at device input. Power Control Power Supply Power Supply Voltage 5 Supply Current Power Down Current 2 6 V 240 mA 10 μA VPC =0.2V Note: For infrastructure class operation, the maximum allowable current over all operating conditions is 260mA. This implies the need for an external active bias control network to control ICC over temperature and normal process variation. A recommended active bias control circuit is included in the datasheet. The maximum continuous allowable dissipated power (ICC *VCC -PRF) for this part is 1.3W. For VCC =5.0V, this implies an ICC limit of 260mA. A VCC of 6.0V would have an ICC limit of 215mA. A constant ICC of 180mA to 220mA provides an excellent combination of high linearity and low power dissipation. Refer to W-CDMA ACP curves at bottom of datasheet. 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]. Rev A7 DS060630 RF5187 Pin 1 Function RF IN 2 3 RF IN PC 4 VCC 5 RF OUT 6 7 8 Pkg Base RF OUT RF OUT RF OUT GND Description Interface Schematic RF input. This input is DC-coupled, so an external blocking capacitor is required if this pin is connected to a DC path. An optimum match to 50Ω is obtained by providing an external series capacitor of 2.4pF and then a shunt capacitor of 2.4pF. Those values are typical for 2140MHz; other values may be required for other frequencies. Same as pin 1. Power control pin. For obtaining maximum performance, the voltage on this pin can be used to set correct bias level. For low power linear applications, it is recommended that a constant bias control loop be used (see datasheet evaluation board schematic). A voltage of 0.5V or less at VPC brings the part into Power Down State. Power supply pin for the bias circuits. External low frequency bypass capacitors should be connected if no other low frequency decoupling is nearby. RF output and bias for the output stage. The power supply for the output transistor needs to be supplied to this pin. This can be done through a quarter-wavelength microstrip line that is RF-grounded at the other end, or through an RF inductor that supports the required DC currents. Optimum load impedance is achieved by providing a shunt capacitor of 1.8pF and a series capacitor of 3.3pF. Those values are typical for 2140MHz; other values may be required for other frequencies. Since there are several output pins available (which are internally connected), one pin can be used for connecting the bias, another for connecting a (third) harmonic trap filter, and the other pins for the RF output. Same as pin 5. Same as pin 5. Same as pin 5. Ground connection. The backside of the package should be connected to the ground plane through a short path (i.e., vias under the device may be required). Package Drawing 0.157 0.150 0.196 0.189 0.0192 0.0138 0.004 0.002 -A- 0.050 0.244 0.230 0.065 0.055 EXPOSED HEATSINK 8° MAX 0° MIN 0.123 0.107 0.035 0.016 0.087 0.071 Rev A7 DS060630 0.0098 0.0075 Dimensions in inches. Shaded lead is pin 1. 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 3 of 8 RF5187 Evaluation Board Schematic 2140MHz Operation J1 RF IN 50 Ω μstrip C2 3 pF C1 2.4 pF VPC C6 1000 pF 1 8 2 7 3 6 BIAS CIRCUIT 4 C3 3.3 pF 50 Ω μstrip C3 1.5 pF P1 5 P1-1 PACKAGE BASE L1 4.7 nH VCC VCC = 5 V f = 2140 MHz POUT = 13 dBm P1-3 C8 1 uF J2 RF OUT C7 1000 pF C5 33 pF 1 VCC 2 GND 3 VPC CON3 Constant Bias Circuit 5.0 V R1 R3 To VCC pins through LPF Q1 Q2 To VPC pin through LPF R2 R4 Bias Point mA 100 120 150 180 200 220 240 4 of 8 R1 Ω 120 120 120 120 120 120 120 R2 Ω 1200 1200 1200 1200 1200 1200 1200 R3 Ω 3.6 3.0 2.5 2.0 1.8 1.7 1.6 R4 Ω 820 820 820 820 820 820 820 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. Rev A7 DS060630 RF5187 Evaluation Board Layout Board Size 1.5” x 1.0” Board Thickness 0.031”, Board Material FR-4 Rev A7 DS060630 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 5 of 8 RF5187 ACP versus POUT versus ICC -52.0 Freq=2140MHz, Signal=W-CDMA Test Model I 64 DPCH VCC=5.0V -53.0 -54.0 -55.0 -56.0 ACP @ 5 MHz Offset -57.0 -58.0 -59.0 -60.0 -61.0 -62.0 -63.0 -64.0 -65.0 -66.0 120 mA 150 mA 180 mA 200 mA 220 mA 240 mA -67.0 -68.0 -69.0 -70.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 POUT (dBm) 6 of 8 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. Rev A7 DS060630 RF5187 Rev A7 DS060630 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 7 of 8 RF5187 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]. Rev A7 DS060630