DATA SHEET SKY65080-70LF: 1500-2500 MHz Low Noise Power Amplifier Driver Applications GND UHF television TETRA radios 4 PCS, DCS, 2.5G, 3G handsets ISM band transmitters WCS fixed wireless 802.16 WiMAX 3GPP LTE Features 1 2 RF_IN GND 3 RF_OUT Wideband frequency range: 1500 to 2500 MHz Low Noise Figure: 2.3 dB High linearity: IIP3 = +25.5 dBm S244 Figure 1. SKY65080-70LF Pinout – 4-Pin SOT Package (Top View) Output P1dB = +21 dBm High gain: 15 dB Description Single DC supply: +5 V Skyworks SKY65080-70LF is a high performance, ultra-wideband Power Amplifier (PA) driver with superior output power, low noise, linearity, and efficiency. The device provides a 2.3 dB Noise Figure (NF) and an output power at 1 dB compression of +21 dBm, making the SKY65080-70LF ideal for use in the driver stage of infrastructure transmit chains. On-chip bias circuit SOT-89 (4-pin, 2.4 x 4.5 mm) package (MSL1, 260 °C per JEDEC J-STD-020) Skyworks offers lead (Pb)-free RoHS (Restriction of Hazardous Substances) compliant packaging. The SKY65080-70LF uses low-cost Surface-Mount Technology (SMT) in the form of a 4-pin, 2.4 x 4.5 mm Small Outline Transistor (SOT) package. The device package and pinout are shown in Figure 1 and a functional block diagram is provided in Figure 2. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201042E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 19, 2010 1 DATA SHEET • SKY65080-70LF PA DRIVER Active Bias 1 RF_IN 2 3 GND RF_OUT S669 Figure 2. SKY65080-70LF Functional Block Diagram Table 1. SKY65080-70LF Signal Descriptions Pin # Name 1 RF_IN Description RF input 2 GND Ground 3 RF_OUT RF output 4 GND Ground Technical Description Electrical and Mechanical Specifications The SKY65080-70LF is a single stage, low-noise PA that operates with a single 5 V power supply connected through an RF choke (inductor L1) to the output signal (pin 3). The bias current is set by the on-chip active bias composed of current mirror and reference voltage transistors, which allow excellent gain tracking over temperature and voltage variations. The device is externally RF matched using surface mount components to facilitate operation over a frequency range of 1500 to 2500 MHz. Signal pin assignments and functional pin descriptions are described in Table 1. The absolute maximum ratings of the SKY65080-70LF are provided in Table 2. The recommended operating conditions are specified in Table 3 and electrical specifications are provided in Table 4. Typical performance characteristics of the SKY65080-70LF are illustrated in Figures 3 through 10. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 2 March 19, 2010 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201042E DATA SHEET • SKY65080-70LF PA DRIVER Table 2. SKY65080-70LF Absolute Maximum Ratings Max Units Supply voltage Parameter VCC Symbol Min 6 V RF output power POUT +24 dBm Supply current ICC 100 mA Power dissipation PD 0.6 W Operating case temperature TC –40 +85 °C Storage temperature TST –55 +125 °C Junction temperature TJ +150 °C Note: Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other parameters set at or below their nominal values. Exceeding any of the limits listed here may result in permanent damage to the device. CAUTION: Although this device is designed to be as robust as possible, Electrostatic Discharge (ESD) can damage this device. This device must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the human body or equipment, which can discharge without detection. Industry-standard ESD precautions should be used at all times. Table 3. SKY65080-70LF Recommended Operating Conditions Parameter Symbol Min Typical Max Units Supply voltage VCC 4.75 5.0 5.5 V Operating frequency f 1500 1750 2500 MHz Operating case temperature TJ –40 +25 +85 °C Table 4. SKY65080-70LF Electrical Characteristics (Note 1) (VCC = +5 V, TC = 25 °C, f = 1850 MHz, Unless Otherwise Noted) Parameter Symbol Test Conditions Min Typical Max Units 2000 MHz Frequency f 1700 1850 Small signal gain G PIN = –15 dBm 14 15 dB Input return loss |S11| PIN = –15 dBm 10 11 dB Output return loss |S22| PIN = –15 dBm 10 Output power @ 1 dB compression OP1dB CW Operating current @ OP1dB ICC_OP1DB Third order input intercept point IIP3 PIN/tone = –10 dBm, Δf = 1 MHz +24.0 +25.5 dBm Third order output intercept point OIP3 PIN/tone = –10 dBm, Δf = 1 MHz +39.0 +40.5 dBm 11 dB +21 dBm 75 Noise Figure NF Small signal Quiescent current ICCQ No RF 40 100 mA 2.3 3.0 dB 66 90 mA Note 1: Performance is guaranteed only under the conditions listed in this Table. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201042E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 19, 2010 3 DATA SHEET • SKY65080-70LF PA DRIVER +28.0 +27.5 IIP3 (dBm) +27.0 +26.5 +26.0 +25.5 4.8 V 5.0 V 5.2 V +25.0 +24.5 +24.0 1700 1750 1800 1850 1900 1950 2000 Frequency (MHz) Figure 3. Typical IIP3 vs Frequency Over VCC (Input = –10 dBm CW) +28 +27 IIP3 (dBm) +26 +25 +24 +23 4.8 V 5.0 V 5.2 V +22 +21 +20 +19 –12 –10 –8 –6 –4 Input Power (dBm) Figure 4. Typical IIP3 vs Input Power Over VCC @ 1700 MHz 16.5 4.8 V 5.0 V 5.2 V Gain (dB) 16.0 15.5 15.0 14.5 14.0 1700 1750 1800 1850 1900 1950 2000 Frequency (MHz) Figure 5. Gain vs Frequency Over VCC Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 4 March 19, 2010 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201042E Noise Figure (dB) DATA SHEET • SKY65080-70LF PA DRIVER 2.9 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0 1600 4.8 V 5.0 V 5.2 V 1700 1800 1900 2000 2100 Frequency (MHz) Gain (dB) Figure 6. Noise Figure vs Frequency Over VCC 16.5 16.0 15.5 15.0 14.5 14.0 13.5 13.0 12.5 12.0 –5 4.8 V 5.0 V 5.2 V 0 +5 +10 +15 +20 +25 Output Power (dBm) Figure 7. Typical Gain vs Output power Over VCC (CW @ 1800 MHz) Gain (dB) 18 17 16 15 14 1700 MHz 1800 MHz 1900 MHz 2000 MHz 13 12 11 10 –10 0 +10 +20 +30 Output Power (dBm) Figure 8. Gain vs Output Power Over Frequency Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201042E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 19, 2010 5 DATA SHEET • SKY65080-70LF PA DRIVER 0.12 1700 MHz 1850 MHz 1950 MHz 0.11 Operating Current (A) 0.10 0.09 0.08 0.07 0.06 0.05 0.04 –10 –5 0 +5 +10 +15 +20 +25 Output Power (dBm) Figure 9. Operating Current vs Output Power Over Frequency 46 PAE (%) 45 44 43 42 41 40 1500 1600 1700 1800 1900 2000 Frequency (MHz) Figure 10. Power-Added Efficiency vs Frequency Evaluation Board Description Circuit Design Configurations The Skyworks SKY65080-70LF Evaluation Board is used to test the performance of the SKY65080-70LF PA driver. An assembly drawing for the Evaluation Board is shown in Figure 11 and the layer detail is provided in Figure 12. The following design considerations are general in nature and must be followed regardless of final use or configuration. Capacitors C7, C8, and C9 provide DC bias decoupling for VCC. Pins 1 and 3 are the RF input and output signals, respectively. External DC blocking is required on the input and output, but can be implemented as part of the RF matching circuit. Pin 2 and the package backside metal, pin 4, are ground pins that provide the DC and RF ground, respectively. 1. Paths to ground should be made as short as possible. 2. The ground pad of the SKY65080-70LF power amplifier has special electrical and thermal grounding requirements. This pad is the main thermal conduit for heat dissipation. Since the circuit board acts as the heat sink, it must shunt as much heat as possible from the amplifier. As such, design the connection to the ground pad to dissipate the maximum wattage produced to the circuit board. Multiple vias to the grounding layer are required. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 6 March 19, 2010 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201042E DATA SHEET • SKY65080-70LF PA DRIVER Package and Handling Information NOTE: Junction temperature (Tj) of the device increases with a poor connection to the slug and ground. This reduces the lifetime of the device. A suggested matching circuit is shown in Figure 13 with component values for the SKY65080-70LF-11 package option listed in Table 5. Component values for the SKY65080-70LF-21 package option are shown in Table 6. Since the device package is sensitive to moisture absorption, it is baked and vacuum packed before shipping. Instructions on the shipping container label regarding exposure to moisture after the container seal is broken must be followed. Otherwise, problems related to moisture absorption may occur when the part is subjected to high temperature during solder assembly. Testing Procedure The SKY65080-70LF is rated to Moisture Sensitivity Level 1 (MSL1) at 260 C. It can be used for lead or lead-free soldering. Use the following procedure to set up the SKY65080-70LF Evaluation Board for testing: Care must be taken when attaching this product, whether it is done manually or in a production solder reflow environment. Production quantities of this product are shipped in a standard tape and reel format. For packaging details, refer to the Skyworks Application Note Tape and Reel, document number 101568. 1. Connect a 5.0 V supply to VCC. If available, enable the current limiting function of the power supply to 100 mA. 2. Connect a signal generator to the RF signal input port. Set it to the desired RF frequency at a power level of –15 dBm or less to the Evaluation Board but do NOT enable the RF signal. Package Dimensions 3. Connect a spectrum analyzer to the RF signal output port. Package dimensions for the 4-pin SOT-89 are shown in Figure 14, and tape and reel dimensions are provided in Figure 15. 4. Enable the power supply. 5. Enable the RF signal. 6. Take measurements. CAUTION: If any of the output signals exceed the rated maximum values, the SKY65080-70LF Evaluation Board can be permanently damaged. GND VCC GND GND JP1 R1 C8 C7 C6 L2 J1 (RF In) C1 C2 L1 C3 C4 L3 C5 L4 J2 (RF Out) S708 Figure 11. Evaluation Board Assembly Drawing Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201042E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 19, 2010 7 DATA SHEET • SKY65080-70LF PA DRIVER Layer 1: Top - Metal Layer 2: Ground Layer 3: Ground Layer 4: Solid Ground Plane S1699 Figure 12. Evaluation Board Layer Detail Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 8 March 19, 2010 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201042E DATA SHEET • SKY65080-70LF PA DRIVER VCC = 5 V C1 C2 R1 C3 L1 4 M2 Input 1 M3 3 M4 M1 2 M6 M5 Output M7 M8 S1377 Figure 13. SKY65080-70LF Evaluation Board Schematic (1700 MHz to 2000 MHz, IIP3 Matched) Table 5. SKY65080-70LF (SOT-89 Package) Evaluation Board Bill of Materials Component Size Value C1 0805 10 μF C2 0603 2.7 pF C3 0603 DNI L1 0603 4.7 nH M1 0603 DNI M2 0603 3.6 pF M3 0603 2.2 nH M4 0603 1.8 pF M5 0603 DNI M6 0603 M7 0603 M8 0603 R1 0603 Vendor Part Number Panasonic ECJ3YBOJ1O6K Johanson 500R14N2R7DV6S-AA – – Taiyo-Yuden HK1608RN7S-T – – Johanson 251R14S3R6BV4SX Johanson L-14C2N2SV4SX Murata GRM39C0G1R8DO5OBK – – 1.5 nH Johanson L-14C1N5SV4SX 33 pF Johanson 500R14N330JV4T DNI – – 0Ω Kamaya RMC1/16-00JTP Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201042E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 19, 2010 9 DATA SHEET • SKY65080-70LF PA DRIVER 4.50 ± 0.10 0.381 ± 0.025 Sharp R0.10 R0.25 1.70 ± 0.05 1.50 7o 2.44 ± 0.10 4.09 ± 0.10 0.51 ± 0.10 7o R0.10 1.04 ± 0.15 0.46 1.50 ± 0.10 0.41 Side View End View Bottom View S253 All measurements are in millimeters Figure 14. SKY65080-70LF (4-Pin SOT-89) Package Dimensions 2.00 ± 0.05 8.00 ± 0.10 4.00 ± 0.10 1.50 ± 0.10 1.75 ± 0.10 0.30 ± 0.05 B Pin #1 Indicator 7o Max 5.50 ± 0.05 12.0 ± 0.30 A A 4.90 ± 0.10 1.00 Min. B 4.60 ± 0.10 1.90 ± 0.10 B 8o Max Notes: 1. Carrier tape material: black conductive polycarbonate 2. Cover tape material: transparent conductive PSA 3. Cover tape size: 9.2 mm width 4. All measurements are in millimeters S264 Figure 15. SKY65080-70LF Tape and Reel Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 10 March 19, 2010 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201042E DATA SHEET • SKY65080-70LF PA DRIVER Ordering Information Model Name SKY65080-70LF Low Noise PA Driver Ordering Part Number SKY65080-70LF Evaluation Kit Part Number TW18-D210 Copyright © 2009, 2010 Skyworks Solutions, Inc. All Rights Reserved. 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Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201042E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 19, 2010 11