PRELIMINARY DATA SHEET SKY65047-360LF: 0.4-3.0 GHz Low Noise Amplifier Applications Description • Wireless infrastructure: WLAN, WiMAX, broadband, cellular base stations • Test instrumentation • Satellite receivers • Paging • Remote metering • WLL and ISM receivers • GPS receivers The SKY65047-360LF is a high linearity Low Noise Amplifier (LNA). The excellent gain, superior low-noise and low current consumption makes the SKY65047-360LF ideal for use in wireless infrastructure applications. The device may also be used in a variety of LNA applications. All active circuitry in the module is contained in a single Microwave Monolithic Integrated Circuit (MMIC). Features • Noise Figure = 0.90 dB @ 915 MHz • Noise Figure = 0.75 dB @ 1575 MHz • Noise Figure = 0.95 dB @ 2450 MHz • Small signal gain = 16.5 dB @ 1575 MHz • Low operating current = 6.7 mA • External, adjustable bias setting • Built-in power-down control • Single DC supply voltage, 2.7 V to 3.8 V The device is manufactured with an advanced silicon germanium (SiGe) process, which allows a single supply operation while maintaining excellent low-noise performance and linearity. The SKY65047-360LF is provided in a low-cost, miniature 2 x 2 mm Dual Flat No-Lead (DFN) package. A functional block diagram is shown in Figure 1. The pin configuration and package are shown in Figure 2. Signal pin assignments and functional pin descriptions are provided in Table 1. • Miniature, DFN (8-pin, 2 x 2 mm) Pb-free package (MSL1, 260 °C per JEDEC J-STD-020) Skyworks offers lead (Pb)-free RoHS (Restriction of Hazardous Substances) compliant packaging. Enable EN GND 1 8 EN RF_IN 2 7 RF_OUT/BIAS GND 3 6 BIAS_R GND 4 5 VBIAS RF_OUT/BIAS RF_IN Bias BIAS_R VBIAS S1486 S1487 Figure 1. SKY65047-360LF Block Diagram Figure 2. SKY65047-360LF Pinout – 8-Pin QFN (Top View) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201084A • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • June 1, 2009 1 PRELIMINARY DATA SHEET • SKY65047-360LF LOW NOISE AMPLIFIER Table 1. SKY65047-360LF Signal Descriptions Pin # Name 1 GND 2 3 4 Description Pin # Name Description Ground 5 VBIAS RF_IN RF input 6 BIAS_R Bias reference voltage GND Ground 7 RF_OUT/BIAS RF output/VCC bias GND Ground 8 EN Amplifier enable control Functional Description VCC bias voltage The SKY65047-360LF includes an internal PA enable (pin 8, EN) for fast RF on/off control. A logic low voltage level disables the PA; a logic high voltage level enables the PA. The SKY65047-360LF is a single stage, low noise amplifier in a low-cost surface mount package. The device operates with a single +3.3 V power supply connected through an RF choke to the output pin. Surface mount capacitors provide DC bias decoupling for VCC. Electrical and Mechanical Specifications The absolute maximum ratings of the SKY65047-360LF are provided in Table 2. The recommended operating conditions are specified in Table 3 and electrical specifications are provided in Table 4. The bias current is set by a reference voltage transistor and by resistor R1. Pin 2 (RF_IN) is the RF input and Pin 7 (RF-OUT/BIAS) is the RF output. The part is externally RF matched and DC blocked using surface mount components to facilitate operation over a frequency range of 0.4 to 3.0 GHz. Pins 1, 3, and 4, and the package backside metal provide the DC and RF ground. Table 2. SKY65047-360LF Absolute Maximum Ratings Maximum Units Supply voltage Parameter VCC 4 V Total supply current IBIAS 20 mA RF input power PIN Storage temperature TSTG Junction temperature TJ Case temperature TCASE Note: Symbol Minimum Typical –65 –40 +20 dBm +125 °C +125 °C +85 °C 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 value. Table 3. SKY65047-360LF Recommended Operating Conditions Parameter Frequency Symbol f Minimum 0.4 RF input power PIN Bias supply voltage (Note 1) VBIAS 2.7 Amplifier enable control (on) EN_ON VCC–0.3 Amplifier enable control (off) EN_OFF Operating temperature TOP Typical 3.3 0 –40 +25 Maximum Units 3.0 GHz –20 dBm 3.8 V VCC V 0.2 V +85 °C Note 1: Voltage applied to pin 5 (VBIAS) and pin 7 (RF_OUT/BIAS). Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 2 June 1, 2009 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 201084A PRELIMINARY DATA SHEET • SKY65047-360LF LOW NOISE AMPLIFIER Table 4. SKY65047-360LF Electrical Specifications (VBIAS and EN = 3.3 V, Characteristic Impedance [ZO] = 50 Ω, TCASE = 25 °C, Unless Otherwise Noted) Parameter Gain temperature drift Symbol G Test Condition 25 °C to –40 °C or 25 °C to +85 °C Min Typical Max Units ±0.5 dB 17.3 dB 915 MHz Matched Performance Gain G Isolation Iso 27 dB Noise Figure NF 0.90 dB 1 dB input compression point IP1dB Input IP3 IIP3 PIN = –30 dBm/tone, 200 kHz spacing –15.8 dBm +3 dBm Input return loss IRL With external matching 14 dB Output return loss ORL With external matching 18 dB Supply current ICC Bias resistor = 4.7 kΩ 7.0 mA 1575 MHz Matched Performance Gain G 16.5 dB Isolation Iso 26 dB Noise Figure NF 0.75 dB 1 dB input compression point IP1dB –15 dBm Input IP3 IIP3 PIN = –30 dBm/tone, 200 kHz spacing 0 dBm Input return loss IRL With external matching 11 dB Output return loss ORL With external matching 13 dB Supply current ICC Bias resistor = 4.7 kΩ 6.7 mA 15.7 dB 2450 MHz Matched Performance Gain G Isolation Iso 21 dB Noise Figure NF 0.95 dB 1 dB input compression point IP1dB –8 dBm Input IP3 IIP3 +6.5 dBm PIN = –30 dBm/tone, 200 kHz spacing Input return loss IRL With external matching 21 dB Output return loss ORL With external matching 13 dB Supply current ICC Bias resistor = 4.7 kΩ 6.8 mA Ilkg No RF 0.1 μA Power-Down Leakage current Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201084A • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • June 1, 2009 3 PRELIMINARY DATA SHEET • SKY65047-360LF LOW NOISE AMPLIFIER Evaluation Board Description The SKY65047-360LF Evaluation Board is used to test the performance of the SKY65047-360LF LNA. Three different boards are available, depending on the desired performance frequency: 915 MHz, 1575 MHz, and 2450 MHz. Evaluation Board schematic diagrams are provided in Figures 10, 12, and 14. Assembly drawings for the Evaluation Board are shown in Figures 11, 13, and 15. Evaluation Board layer detail drawings for the 915 MHz, 1575 MHz, and 2450 MHz boards are shown in Figures 16, 17, and 18, respectively. Layer detail physical characteristics are noted in Figure 19. Circuit Design Considerations The following design considerations are general in nature and must be followed regardless of final use or configuration: 1. Paths to ground should be made as short as possible. 2. The ground pad of the SKY65047-360LF 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 device. Therefore, design the connection to the ground pad to dissipate the maximum wattage produced by the circuit board. Multiple vias to the grounding layer are required. NOTE: A poor connection between the slug and ground increases junction temperature (TJ), which reduces the lifetime of the device. Evaluation Board Test Procedure Step 1: Connect RF test equipment to amplifier input/output SMA connectors. Step 2: Connect DC ground. Step 3: Connect VCC to a +3.3 V supply. Verify that the board draws approximately 6.7 mA. Step 4: Connect pin 8 (EN) to a +3.3 V supply to enable the LNA. Set EN to 0 V to disable the LNA. Step 5: Apply an RF input signal of –40 dBm and observe the output signal level. This level should be approximately –23.5 dBm with a gain equal to approximately 16.5 dB. GND (pins 1, 3, and 4). Attach all ground pins to the RF ground plane with the largest diameter and lowest inductance via that the layout allows. Multiple small vias are acceptable and will work well under the device if solder migration is an issue. Pin 3 can also be connected to ground with a small inductance of emitter degeneration. RF_IN (pin 2). The LNA requires a DC blocking capacitor as part of the external RF matching. VBIAS (pin 5). The bias supply voltage for the LNA is typically set to +3.3 V using a bias resistor. BIAS_R (pin 6). This pin is typically connected to +3.3 V through a bias resistor. RF_OUT/BIAS (pin 7). The LNA collector supply voltage is supplied through an RF choke (component L3 on the 915 MHz and 2450 MHz Evaluation Boards, and component L2 on the 1575 MHz Evaluation Board) to the output at pin 7. The LNA requires a DC blocking capacitor as part of the external RF matching. EN (pin 8). A logic low voltage level disables the internal PA; a logic high voltage level enables the internal PA. Package Dimensions The PCB layout footprint for the SKY65047-360LF is shown in Figure 20. Typical case markings are shown in Figure 21. Package dimensions for the 8-pin DFN are shown in Figure 22, and tape and reel dimensions are provided in Figure 23. Package and Handling Information 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. THE SKY65047-360LF is rated to Moisture Sensitivity Level 1 (MSL1) at 260 °C. It can be used for lead or lead-free soldering. 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, Discrete Devices and IC Switch/Attenuators Tape and Reel Package Orientation, document number 200083. Application Circuit Notes Center Ground. It is extremely important to sufficiently ground the bottom ground pad of the device for both thermal and stability reasons. Multiple small vias are acceptable and will work well under the device if solder migration is an issue. Electrostatic Discharge (ESD) Sensitivity The SKY65047-360LF is a static-sensitive electronic device. Do not operate or store near strong electrostatic fields. Take proper ESD precautions. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 4 June 1, 2009 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 201084A PRELIMINARY DATA SHEET • SKY65047-360LF LOW NOISE AMPLIFIER Optional Decoupling Capacitors Enable C9 1 μF VCC 8 1 GND C4 22 nF L1 6.8 nH EN RF_IN C3 0.7 pF C13 10 nF RF_OUT/BIAS C16 1 μF RF Output 3 C5 2.2 pF 6 GND BIAS_R 5 4 L6 1 nH C12 56 pF L3 12 nH 7 2 RF Input R3 180 Ω GND R1 4.7 kΩ VBIAS VCC S1497 Figure 10. SKY65047-360LF Evaluation Board Schematic (915 MHz) C15 C17 L10 R5 J3 J4 L8 R6 L9 C16 R4 C14 L7 C10 C9 J1 C2 L1 C3 C4 R2 C5 L3 C1 L6 R1 C11 C8 L2 C7 C6 R3 C12 C13 J2 R9 R8 L4 L5 P1 S1489 Figure 11. SKY65047-360LF Evaluation Board Assembly Diagram (915 MHz) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201084A • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • June 1, 2009 5 PRELIMINARY DATA SHEET • SKY65047-360LF LOW NOISE AMPLIFIER Optional Decoupling Capacitors Enable C7 1 μF VCC 8 1 GND C1 22 nF L1 2.7 nH EN C4 22 pF L2 8.2 nH C5 10 nF C8 1 μF 7 2 RF_IN RF Input R2 180 Ω RF_OUT/BIAS 3 RF Output C3 3.6 pF 6 GND BIAS_R 5 4 GND R1 4.7 kΩ VBIAS VCC S1498 Figure 12. SKY65047-360LF Evaluation Board Schematic (1575 MHz) C9 L5 J3 J4 R4 R3 C8 C7 C3 C1 C2 L1 J1 R1 C6 J2 C4 C5 R5 R6 L3 L4 P1 S1490 Figure 13. SKY65047-360LF Evaluation Board Assembly Diagram (1575 MHz) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 6 June 1, 2009 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 201084A PRELIMINARY DATA SHEET • SKY65047-360LF LOW NOISE AMPLIFIER Optional Decoupling Capacitors Enable C9 1 μF VCC GND L1 1.8 nH C4 22 nF EN C16 1 μF 7 RF_IN C2 1.1 pF C13 10 nF L3 68 nH 2 RF Input C12 10 pF 8 1 RF_OUT/BIAS RF Output 3 6 GND BIAS_R GND VBIAS 5 4 R2 130 Ω R1 4.7 kΩ C5 22 pF L2 1.5 pF C6 3.3 nH L7 12 nH VCC C14 10 nF Note: Some component labels may be different than the corresponding component symbol shown here. Component values, however, are accurate as of the date of this Data Sheet. S1499 Figure 14. SKY65047-360LF Evaluation Board Schematic (2450 MHz) C17 C15 L10 R5 J3 J4 L8 R6 C16 R4 C10 J1 L1 C1 R2 C5 C4 L3 C3 C2 C14 L7 C9 R1 C11 L2 C8 C6 R3 C12 C13 J2 C7 R9 R8 L4 L5 P1 S1491 Figure 15. SKY65047-360LF Evaluation Board Assembly Diagram (2450 MHz) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201084A • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • June 1, 2009 7 PRELIMINARY DATA SHEET • SKY65047-360LF LOW NOISE AMPLIFIER Layer 1: Top – Metal Layer 2: Ground Layer 3: Power Plane Layer 4: Solid Ground Plane S1492 Figure 16. SKY65047-360LF Evaluation Board Layer Detail (915 MHz) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 8 June 1, 2009 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 201084A PRELIMINARY DATA SHEET • SKY65047-360LF LOW NOISE AMPLIFIER Layer 1: Top – Metal Layer 2: Ground Layer 3: Power Plane Layer 4: Solid Ground Plane S1493 Figure 17. SKY65047-360LF Evaluation Board Layer Detail (1575 MHz) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201084A • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • June 1, 2009 9 PRELIMINARY DATA SHEET • SKY65047-360LF LOW NOISE AMPLIFIER Layer 1: Top – Metal Layer 2: Ground Layer 3: Power Plane Layer 4: Solid Ground Plane S1494 Figure 18. SKY65047-360LF Evaluation Board Layer Detail (2450 MHz) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 10 June 1, 2009 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 201084A PRELIMINARY DATA SHEET • SKY65047-360LF LOW NOISE AMPLIFIER Cross Section Name Thickness (mm) Material Top solder mask L1 Laminate L2 Laminate L3 Laminate L4 0.025 min. Cu, 1 oz. 0.400 ± 0.025 Rogers 4003 0.025 min. Cu, 1 oz 0.400 ± 0.040 Prepreg 0.025 min. Cu, 1 oz 0.400 ± 0.025 Glass reinforced core 0.025 min. Cu, 1 oz Bottom solder mask S1495 Figure 19. Layer Detail Physical Characteristics 8X 0.70 8X 0.45 R0.20 Pin 1 8X 0.25 0.50 Pitch 2X 0.85 0.25 2X 0.45 Exposed Solder Areas (Typical) All dimensions are in millimeters S1413 Figure 20. SKY65047-360LF PCB Layout Footprint Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201084A • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • June 1, 2009 11 PRELIMINARY DATA SHEET • SKY65047-360LF LOW NOISE AMPLIFIER Pin 1 Indicator Skyworks Part # S47 S1488 Figure 21. Typical Case Markings (Top View) 0.90 +0.10/–0.15 C 2 0.20 Ref Seating Plane A B 0.45 +0.05/–0.07 Exposed Pad Detail A 0.02 +0.03/–0.02 Pin 1 Indicator -B- 2 0.15 C 2X 8X 3 0.08 C Detail C 0.90 ± 0.10 0.15 C 2X 1.70 +0.10/–0.15 0.85 +0.05/–0.07 Detail B 2 Places 0.10 C Top View Side View Bottom View R0.12 Typ 0.25 0.30 ± 0.10 -A- CL R0.20 0.5 0.25 +0.05/–0.07 5 0.10 M C A B 0.05 M C Detail C 8 Places Detail B Detail A All measurements are in millimeters. Dimensioning and tolerancing according to ASME Y14.5M-1994. Coplanarity applies to the exposed heat sink slug as well as the terminals.. Plating requirement per source control drawing (SCD) 2504. Dimension applies to metalized terminal and is measured between 0.15 mm and 0.30 mm from terminal tip. Figure 22. SKY65047-360LF 8-Pin DFN Package Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 12 June 1, 2009 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 201084A S1415 PRELIMINARY DATA SHEET • SKY65047-360LF LOW NOISE AMPLIFIER ∅1.50+ P0.10/–0.00 0.30 ± 0.01 (T) 4.00 ± 0.10 Pin #1 4.00 ± 0.10 2.00 ± 0.05 1.75 ± 0.10 B A B 1.20 ± 0.10 (Ko) 8.00 +0.30/–0.10 A 3.50 ± 0.05 2.60 ± 0.10 (Bo) R0.30 Max ∅1.00 Min. 2.60 ± 0.10 (Ao) B R0.30 Max A Notes: 1. Carrier tape: black conductive polystyrene. 2. Cover tape material: transparent conductive HSA. 3. Cover tape size: 5.40 mm width. 4. All measurements are in millimeters. S1480 Figure 23. SKY65047-360LF Tape and Reel Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201084A • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • June 1, 2009 13 PRELIMINARY DATA SHEET • SKY65047-360LF LOW NOISE AMPLIFIER Ordering Information Model Name SKY65047-360LF Low Noise Amplifier Manufacturing Part Number SKY65047-360LF (Pb-free package) Evaluation Kit Part Number TW17-D900 (915 MHz) TW17-D910 (1575 MHz) TW17-D920 (2450 MHz) Copyright © 2009 Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, are provided by Skyworks as a service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials or the information contained herein. Skyworks may change its documentation, products, services, specifications or product descriptions at any time, without notice. Skyworks makes no commitment to update the materials or information and shall have no responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from any future changes. No license, whether express, implied, by estoppel or otherwise, is granted to any intellectual property rights by this document. Skyworks assumes no liability for any materials, products or information provided hereunder, including the sale, distribution, reproduction or use of Skyworks products, information or materials, except as may be provided in Skyworks Terms and Conditions of Sale. 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Skyworks products are not intended for use in medical, lifesaving or life-sustaining applications, or other equipment in which the failure of the Skyworks products could lead to personal injury, death, physical or environmental damage. Skyworks customers using or selling Skyworks products for use in such applications do so at their own risk and agree to fully indemnify Skyworks for any damages resulting from such improper use or sale. Customers are responsible for their products and applications using Skyworks products, which may deviate from published specifications as a result of design defects, errors, or operation of products outside of published parameters or design specifications. Customers should include design and operating safeguards to minimize these and other risks. Skyworks assumes no liability for applications assistance, customer product design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifications or parameters. Skyworks, the Skyworks symbol, and “Breakthrough Simplicity” are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands and names are for identification purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by reference. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 14 June 1, 2009 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 201084A