DATA SHEET SKY67175-306LF: 1.5 to 3.8 GHz Two-Stage, High-Gain Low-Noise Amplifier Applications LTE, GSM, WCDMA, HSDPA macro and micro base stations Active Bias L and S band ultra low-noise receivers RF_OUT2 Cellular repeaters, small cell, macro cell, DAS, and RRH/RRUs High-temperature transceiver applications to +105 °C RF_IN1 RF_OUT2 Small, QFN (16-pin, 4 x 4 mm) Pb-free package (MSL1, 260 C per JEDEC J-STD-020) Skyworks Green™ products are compliant with all applicable legislation and are halogen-free. For additional information, refer to Skyworks Definition of Green™, document number SQ04-0074. RF_IN2 Part of complete SDARS LNA reference design Ultra-low reference design NF: 0.64 dB @ 3.5 GHz High gain: 33 dB @ 3.5 GHz Low quiescent current: 115 mA Stage 1 and 2 adjustable current RF_OUT1 Features S2407 Figure 1. SKY67175-306LF Block Diagram Description The SKY67175-306LF is a two-stage, GaAs pHEMT low-noise amplifier (LNA) with active bias and high linearity performance. The pHEMT front end of the device provides an ultra-low noise figure (NF) while the cascode output stage provides high gain, linearity, and efficiency. With excellent thermal performance, the SKY67175-306LF is rated for operation up to +105 °C. The SKY67175-306LF is provided in a 4 x 4 mm, 16-pin Quad Flat No-Lead (QFN) 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. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202684C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • September 18, 2014 1 N/C VBIAS2 RF_GND2 N/C DATA SHEET • SKY67175-306LF: TWO-STAGE, HIGH-GAIN LNA 16 15 14 13 RF_IN1 2 11 RF_OUT2 RF_GND/VBIAS1 3 10 RF_OUT2 FEEDBACK 4 9 N/C 5 6 7 8 RF_IN2 N/C GND 12 GND 1 RF_OUT1 N/C S2758a Figure 2. SKY67175-306LF Pinout – 16-Pin QFN (Top View) Table 1. SKY67175-306LF Signal Descriptions Pin Name Description Pin 9 1 N/C No connection. May be grounded with no change in performance. 2 RF_IN1 RF input to first stage LNA 3 RF_GND/VBIAS1 AC ground for first stage bias circuit and bias voltage input that sets the first stage bias current. 4 FEEDBACK Feedback pin. Leave open when not used. This feedback option is typically not used since it reduces gain. 5 RF_OUT1 RF output of first stage LNA Name Description N/C No connection. May be grounded with no change in performance. 10 RF_OUT2 RF output of second stage amplifier 11 RF_OUT2 RF output of second stage amplifier 12 N/C No connection. May be grounded with no change in performance. 13 N/C No connection. May be grounded with no change in performance. 6 GND Ground 14 RF_GND2 AC ground for second stage bias circuit 7 GND Ground 15 VBIAS2 bias voltage input that sets the second stage bias current 8 RF_IN2 RF input to second stage amplifier 16 N/C No connection. May be grounded with no change in performance. Electrical and Mechanical Specifications The absolute maximum ratings of the SKY67175-306LF are provided in Table 2. Electrical specifications are provided in Table 3. Typical performance characteristics of the SKY67175-306LF are illustrated in Figures 3 through 13. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 2 September 18, 2014 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202684C DATA SHEET • SKY67175-306LF: TWO-STAGE, HIGH GAIN LNA Table 2. SKY67175-306LF Absolute Maximum Ratings (Note 1) Parameter Symbol Minimum Supply voltage VDD RF input power PIN Operating temperature TOP –40 Storage temperature TSTG –65 Junction temperature TJ Thermal resistance: Stage 1 Stage 2 ΘJC Electrostatic discharge: ESD Maximum Units 6.0 V Charged Device Model (CDM), Class 4 Human Body Model (HBM), Class 1A Machine Model (MM), Class A +20 dBm +105 C +125 C +150 C 50 65 C/W C/W 1000 250 25 V V V Note 1: 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. 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. SKY67175-306LF Electrical Specifications (Note 1) (VDD = +5 V, TOP = +25 C, PIN = –30 dBm, Optimized for 3.4 to 3.6 GHz Operation, Unless Otherwise Noted) Parameter Symbol Test Condition Min Typical Max Units 0.64 0.84 dB RF Specifications Noise figure (Note 2) NF @ 3500 MHz Small signal gain |S21| @ 3500 MHz Input return loss |S11| Output return loss |S22| Reverse isolation |S12| @ 3500 MHz 48 dB 3rd Order Input Intercept Point IIP3 @ 3500 MHz, Δf = 1 MHz, PIN = –30 dBm/tone –3.5 +0.5 dBm 3rd Order Output Intercept Point OIP3 @ 3500 MHz, Δf = 1 MHz, PIN = –30 dBm/tone +29.5 +33.5 dBm 1 dB Input Compression Point IP1dB @ 3500 MHz –19.5 –16.5 dBm 1 dB Output Compression Point OP1dB @ 3500 MHz +13.5 +16.5 dBm 5 V 115 mA 30 33 dB @ 3500 MHz 17 dB @ 3500 MHz 18 dB DC Specifications Supply voltage VDD Quiescent current IDD Set with external resistor Note 1: Performance is guaranteed only under the conditions listed in this table. Specifications are for the entire reference design including the interstage SAW filter and the output high pass filter. Note 2: Noise figure has been de-embedded as 0.1 dB @ 3500 MHz for connector and board loss. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202684C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • September 18, 2014 3 DATA SHEET • SKY67175-306LF: TWO-STAGE, HIGH-GAIN LNA Typical Performance Characteristics (VDD = +5 V, TOP = +25 C, PIN = –30 dBm, Reference Design Optimized for 3.4 to 3.6 GHz Operation, Unless Otherwise Noted) 38 1.1 +105 °C +85 °C +25 °C –40 °C 1.0 36 Small Signal Gain (dB) 0.9 0.7 0.6 0.5 0.4 +105 °C +85 °C +25 °C –40 °C 0.2 0.1 0 3.40 3.42 3.44 3.46 3.48 3.50 3.52 3.54 3.56 3.58 34 32 30 28 26 3.20 3.60 Y1389 0.3 Y1388 Noise Figure (dB) 0.8 3.30 3.40 3.50 3.70 3.80 Figure 4. Small Signal Gain vs Frequency Over Temperature Narrow Band Figure 3. Noise Figure vs Frequency Over Temperature –1 +40 –5 Input Return Loss (dB) 0 +105 °C +85 °C +25 °C –40 °C –3 +105 °C +85 °C +25 °C –40 °C +20 Small Signal Gain (dB) 3.60 Frequency (GHz) Frequency (GHz) –20 –40 –60 –7 –9 –11 –13 –15 –17 –19 –21 –80 0 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 –25 3.20 24.00 Y1391 –23 Y1390 –100 3.30 3.40 3.50 3.60 3.70 Figure 6. Input Return Loss vs Frequency Over Temperature, Narrow Band Figure 5. Small Signal Gain vs Frequency Over Temperature, Wide Band +5 +105 °C +85 °C +25 °C –40 °C –20 0 Reverse Isolation (dB) –10 –15 +105 °C +85 °C +25 °C –40 °C –30 0 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 –40 –50 –60 –70 24.00 Frequency (GHz) Figure 7. Input Return Loss vs Frequency Over Temperature, Wide Band –80 3.20 Y1393 –25 Y1392 Input Return Loss (dB) –30 –5 –20 3.30 3.40 3.50 3.60 3.70 Frequency (GHz) Figure 8. Reverse Isolation vs Frequency Over Temperature, Narrow Band Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 4 3.80 Frequency (GHz) Frequency (GHz) September 18, 2014 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202684C 3.80 DATA SHEET • SKY67175-306LF: TWO-STAGE, HIGH GAIN LNA 0 0 –5 –20 –80 +105 °C +85 °C +25 °C –40 °C –100 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 –20 –25 –30 +105 °C +85 °C +25 °C –40 °C –35 –120 0 –15 –40 –45 3.20 24.00 3.30 3.40 3.50 3.70 3.80 Figure 10. Output Return Loss vs Frequency Over Temperature, Narrow Band Figure 9. Reverse Isolation vs Frequency Over Temperature, Wide Band 6 +5 0 +105 °C +85 °C +25 °C –40 °C 5 Stability Factor μ1 –5 –10 –15 –25 –30 0 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 4 3 2 1 Y1397 +105 °C +85 °C +25 °C –40 °C Y1396 –20 24.00 0 Frequency (GHz) 0 2 4 6 8 10 12 14 16 18 20 22 24 Frequency (GHz) Figure 11. Output Return Loss vs Frequency Over Temperature Wide Band Figure 12. Stability Factor (μ1) vs Frequency Over Temperature 6 +105 °C +85 °C +25 °C –40 °C 5 4 Stability Factor μ2 3 2 1 0 Y1398 Output Return Loss (dB) 3.60 Frequency (GHz) Frequency (GHz) 0 2 4 6 8 10 12 14 16 18 20 22 24 Frequency (GHz) Figure 13. Stability Factor (μ2) vs Frequency Over Temperature Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202684C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • September 18, 2014 Y1395 Output Return Loss (dB) –60 Y1394 Reverse Isolation (dB) –10 –40 5 DATA SHEET • SKY67175-306LF: TWO-STAGE, HIGH-GAIN LNA Evaluation Board Description Package and Handling Information The SKY67175-306LF Evaluation Board is used to test the performance of the SKY67175-306LF two-stage LNA. An Evaluation Board schematic diagram is provided in Figure 14 and Table 5 provides the Evaluation Board Bill of Materials. 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 Evaluation Board assembly drawing is shown in Figure 15. The SKY67175-306LF is rated to Moisture Sensitivity Level 1 (MSL1) at 260 C. It can be used for lead or lead-free soldering. For additional information, refer to the Skyworks Application Note, Solder Reflow Information, document number 200164. Package Dimensions The PCB layout footprint for the SKY67175-306LF is shown in Figure 16. Typical case markings are noted in Figure 17. Package dimensions for the 16-pin QFN are shown in Figure 18, and tape and reel dimensions are provided in Figure 19. 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. DCH1 Header 1 2 3 4 5 VDD1 6 VBIAS M21 VBIAS VDD2 M24 M22 VDD1 M23 M25 M20 M5 RF_GND2 M27 M26 N/C 12 N/C RF_IN1 RF_OUT2 RF_GND/VBIAS1 RF_OUT2 11 M28 M4 4 FEEDBACK M8 M31 5 6 7 M38 9 N/C RF_OUT1 M7 RFC2 M30 10 3 M6 RF_IN2 M2 2 13 GND M3 GND RFC1 VBIAS N/C 1 14 N/C 15 16 8 VBIAS M18 M19 M37 M39 M11 VDD2 M36 M14 M12 M13 M15 M35 Y1387 Figure 14. SKY67175-306LF Evaluation Board Schematic Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 6 September 18, 2014 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202684C DATA SHEET • SKY67175-306LF: TWO-STAGE, HIGH GAIN LNA Table 5. SKY67175-306LF Evaluation Board Bill of Materials (Complete Reference Design) Component Type Value Size Manufacturer Manufacturer Part Number M2 Capacitor DNP M3 Capacitor 8.2 pF 0402 Murata GJM GJM1555C1H8R2DB01D M4 Capacitor 1.0 pF 0402 Murata GJM GJM1555C1H1R0CB01D M5 Inductor 8.2 pF 0402 Murata GJM GJM1555C1H8R2DB01D M6 Inductor 18 nH 0402 Coilcraft HP 0402HP-18NX_LU M7 DNP M8 Resistor 18 kΩ 0402 Panasonic ERJ-2RKF1802X M11 Inductor 3.3 nH 0402 Murata LQG LQG15HN3N3S02D M12 Capacitor 1000 pF 0402 Murata GRM GRM155R71H102KA01 M13 Capacitor 10000 pF 0402 Murata GRM GRM155R71H103KA88 M14 Capacitor 100 pF 0402 Murata GRM GRM1555C1H101JA01D M15 Inductor 1 nH 0402 Murata LQG LQG15HN1N0S02D M18 Capacitor 1.0 pF 0402 Murata GRM GRM1555C1H1R0BA01D M19 Inductor 5.1 nH 0402 Murata LQG LQG15HN5N1S02D M20 Capacitor 5.6 pF 0402 Murata GRM GRM1555C1H5R6DZ01 M21 Resistor 7.5 kΩ 0402 Panasonic ERJ-2RKF7501X M22 Inductor 15 nH 0402 Coilcraft HP 0402HP-15NX_L M23 Capacitor 1000 pF 0402 Murata GRM GRM155R71H102KA01 M24 Capacitor 1 μF 0402 Murata GRM GRM155R61A105KE15 M25 Capacitor 10 pF 0402 Murata GRM GRM1555C1H100JZ01 M26 Inductor 9.1 nH 0402 Murata LQG LQG15HN9N1J02D M27 DNP M28 Capacitor 2.2 pF 0402 Murata GJM GJM1555C1H2R2CB01D M30 Capacitor 5.6 pF 0402 Murata GJM GJM1555C1H5R6DB01D 0402 Panasonic ERJ-2GE0R00X M31 DNP M35 DNP 0Ω M36 Resistor M37 Resistor 0Ω 0402 Panasonic ERJ-2GE0R00X M38 Inductor 1.5 nH 0402 Murata LQW LQW15AN1N5B00D M39 Capacitor 1.3 pF 0402 Murata GJM GJM1555C1H1R3CB01D Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202684C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • September 18, 2014 7 DATA SHEET • SKY67175-306LF: TWO-STAGE, HIGH-GAIN LNA Figure 15. SKY67175-306LF Evaluation Board Assembly Diagram Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 8 September 18, 2014 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202684C DATA SHEET • SKY67175-306LF: TWO-STAGE, HIGH GAIN LNA 16X 1.45 (To Metal Pads) Pitch 0.65 Typ. 0.325 4X Plated Thru Vias See Detail A Metal GND Pad (Sq.) 2.15 0.30 Exposed Soldering Area 0.75 Detail A S2274 Figure 16. SKY67175-306LF PCB Layout Footprint Pin 1 Indicator Skyworks Part # Lot # Date Code: (YY = Calendar Year WW = Week CC = Country Code) Figure 17. Typical Case Markings (Top View) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202684C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • September 18, 2014 9 DATA SHEET • SKY67175-306LF: TWO-STAGE, HIGH-GAIN LNA C B (1.075) Pin 1 Indicator (Option B) Exposed Pad 0.02 +0.03/–0.02 Pin 1 Indicator (Option A) 4 (1.075) 0.20 Min. 16X 4 0.15 C 2X 2.15 +0.10/–0.15 4 Pin 1 Indicator 2.15 +0.10/–0.15 (0.2) Seating Plane A 0.08 C 2X Detail A 16X 0.15 C 0.90 ± 0.10 Detail B 0.10 C Side View Top View Bottom View R0.12 Typ. 0.18 R0.20 Pin 1 Indicator 0.55 ± 0.10 0.18 0.345 (0.325) 0.30 +0.05 0.65 0.10 M C A B 0.345 Detail A Detail B Option A Option B Scale: 40X 16 Places Scale: 20X Even Terminal Side Pin 1 Indicator Scale: 10X Pin 1 Indicator Scale: 20X 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. Package may have option A or option B pin 1 indicator. S2400 Figure 18. SKY67175-306LF 16-Pin QFN Package Dimensions 4.00 ± 0.10 0.30 ± 0.05 (T) 2.00 ± 0.05 ∅1.50 +0.1/–0 8.00 ± 0.10 1.75 ± 0.10 B A B 1.10 ± 0.10 (Ko) 4.35 ± 0.10 (Ao) 12.00 ± 0.30 4.35 ± 0.10 (Bo) A 5.50 ± 0.05 Pin 1 Indicator ∅1.50 Min. R0.25 Typ. B A Notes: 1. Carrier tape material: black conductive polystyrene, non-bakeable 2. Cover tape material: transparent conductive HSA 3. Cover tape size: 9.2 mm width 4. ESD surface resistivity is ≥1 x 105 ~ ≤ 1 x 1010 Ohms/square S1846 per EIA, JEDEC TNR Specification. 5. All measurements are in millimeters Figure 19. SKY67175-306LF Tape and Reel Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 10 September 18, 2014 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202684C DATA SHEET • SKY67175-306LF: TWO-STAGE, HIGH GAIN LNA Ordering Information Model Name SKY67175-306LF: Two-Stage, High Gain LNA Manufacturing Part Number SKY67175-306LF Evaluation Board Part Number SKY67175-306LF-3500 MHz-EVB Copyright © 2013-2014 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. 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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 and the Skyworks symbol 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 202684C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • September 18, 2014 11