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| Preliminary RF3120 3V 1800MHZ LINEAR AMPLIFIER MODULE 2 Typical Applications * 3V CDMA Korean-PCS Handsets * Spread-Spectrum Systems 2 POWER AMPLIFIERS 4.390 6.0 sq 0.100 Dimensions in mm. Product Description The RF3120 is a high-power, high-efficiency linear amplifier IC targeting 3V handheld systems. The device is manufactured on an advanced Gallium Arsenide Heterojunction Bipolar Transistor (HBT) process, and has been designed for use as the final RF amplifier in dual-mode 3V CDMA hand-held digital cellular equipment, spreadspectrum systems, and other applications in the 1750MHz to 1780MHz band. The RF3120 has a digital bias control voltage for low current in standby mode. The device is self-contained with 50 input and output that is matched to obtain optimum power, efficiency, and linearity characteristics. The module is an ultra-small 6mmx6mm land grid array with backside ground. 3.000 0.100 0.800 sq typ 1.700 2.500 NOTE: Nominal thickness, 1.55 mm. 0.600 Optimum Technology Matching(R) Applied Si BJT Si Bi-CMOS u Package Style: LGM (6mmx6mm) GaAs HBT SiGe HBT GaAs MESFET Si CMOS Features * Input/Output Internally Matched @ 50 * Single 3V Supply * 29dBm Linear Output Power * 26dB Linear Gain VCC1 1 7 GND RF IN 2 6 RF OUT * 32% Linear Efficiency VREG 3 4 VMODE 5 VCC2 Ordering Information RF3120 RF3120 PCBA 3V 1800MHz Linear Amplifier Module Fully Assembled Evaluation Board Functional Block Diagram RF Micro Devices, Inc. 7628 Thorndike Road Greensboro, NC 27409, USA Tel (336) 664 1233 Fax (336) 664 0454 http://www.rfmd.com Rev A0 010906 2-257 RF3120 Absolute Maximum Ratings Parameter Supply Voltage (RF off) Supply Voltage (POUT 29dBm) Control Voltage (VREG) Preliminary Rating +8.0 +4.5 +4.2 +3.5 +10 -30 to +85 -30 to +150 Unit VDC VDC VDC VDC dBm C C Caution! ESD sensitive device. RF Micro Devices believes the furnished information is correct and accurate at the time of this printing. However, RF Micro Devices reserves the right to make changes to its products without notice. RF Micro Devices does not assume responsibility for the use of the described product(s). 2 POWER AMPLIFIERS Mode Voltage (VMODE) Input RF Power Operating Ambient Temperature Storage Temperature Parameter Overall Frequency Range Linear Gain Second Harmonic Third Harmonic Maximum Linear Output Power (CDMA Modulation) Total Linear Efficiency Adjacent Channel Power Rejection Input VSWR Output VSWR Noise Figure Noise Power Specification Min. Typ. Max. Unit Condition T=25C, VCC =3.4V, VREG =2.8V, VMODE =2.8V, Freq=1750MHz to 1780MHz unless otherwise specified 1750 22 1780 26 -35 -40 29 30 32 -44 <2:1 10:1 6:1 8 -95 3.2 3.4 100 4.5 6 40 10 0.2 2.9 MHz dB dBc dBc dBm % dBc ACPR @ 1250kHz No damage. No oscillations. dB dBm/30kHz V mA mA s A V V At 90MHz offset. Power Supply Power Supply Voltage Quiescent Current VREG Current Turn On/Off Time Total Current (Power down) VREG "Low" Voltage VREG "High" Voltage Pin 3, VREG =2.8V VREG =low 2.7 0 2.8 2-258 Rev A0 010906 Preliminary Pin 1 2 3 4 5 6 7 Pkg Base Function VCC1 RF IN VREG VMODE VCC2 RF OUT GND GND Description First stage collector supply. A low frequency decoupling capacitor (e.g., 4.7F) is required. RF input internally matched to 50. This input is internally AC-coupled. Regulated voltage supply for amplifier bias. For nominal operation, VMODE is set to HIGH. When set LOW: VMODE will increase the bias current by approximately 50%; and, large signal gain is increased by approximately 1.5dB. Output stage collector supply. A low frequency decoupling capacitor (e.g., 4.7F) is required. RF output internally matched to 50. This output is internally AC-coupled. Ground connection. Connect to package base ground. For best performance, keep traces physically short and connect immediately to ground plane. Ground connection. The backside of the package should be soldered to a top side ground pad which is connected to the ground plane with multiple vias. The pad should have a short thermal path to the ground plane. RF3120 Interface Schematic 2 POWER AMPLIFIERS Rev A0 010906 2-259 RF3120 Evaluation Board Schematic (Download Bill of Materials from www.rfmd.com.) Preliminary 2 POWER AMPLIFIERS C19 + 4.7 F VCC1 1 7 J1 RF IN 50 strip 2 6 50 strip J2 RF OUT VREG 3 C20 1 F 4 5 C1 4.7 F 3120400- + VMODE VCC2 2-260 Rev A0 010906 Preliminary Evaluation Board Layout Board Size 2.0" x 2.0" Board Thickness 0.028", Board Material FR-4 RF3120 2 POWER AMPLIFIERS Rev A0 010906 2-261 RF3120 Preliminary 2 POWER AMPLIFIERS 2-262 Rev A0 010906 |
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