PRELIMINARY DATA SHEET SKY85402-11: High-Power (+22 dBm) 802.11ac WLAN Power Amplifier with Integrated Power Detector Applications Description IEEE 802.11ac WLAN enabled: Access points Media gateways Set-top boxes LCD TVs Skyworks SKY85402-11 is a 5 GHz Microwave Monolithic Integrated Circuit (MMIC) power amplifier (PA) with superior output power, linearity, and efficiency. These features make the SKY85402-11 ideal for wireless local area network (WLAN IEEE 802.11ac) applications. Other broadband triple-play multimedia applications The device is fabricated using SiGe BiCMOS technology. The device is internally matched and mounted in a 20-pin, 4 x 4 mm Quad Flat No-Lead (QFN) surface-mount technology (SMT) package, which allows for a highly manufacturable low cost solution. Features Linear output power for IEEE 802.11ac 256-QAM, EVM < 1.8% = +22 dBm @ 5.0 V A block diagram of the SKY85402-11 is shown in Figure 1.The device package and pinout are shown in Figure 2. Signal pin assignments and functional pin descriptions are described in Table 1. High gain: 32 dB Power shutdown mode Superior gain flatness Fully matched at RF input/output ports Load insensitive power detector Small footprint QFN (20-pin, 4 x 4 mm) SMT package (MSL3, 260 C per JEDEC J-STD-020) Skyworks GreenTM products are compliant with all applicable legislation and are halogen-free. For additional information, refer to Skyworks Definition of GreenTM, document number SQ04–0074. RF_IN Bias Input Match Inter-Stage Match Input Match Inter-Stage Match Detector VCC1 VCC2 RF_OUT Y1928 PA_EN VDET VCC3 Figure 1. SKY85402-11 Block Diagram Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202120I • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 2, 2015 1 VCC1 VCC2 VCC3 GND GND PRELIMINARY DATA SHEET • SKY85402-11: HIGH-POWER (+22 dBm) 802.11ac WLAN PA 20 19 18 17 16 2 14 GND RF_IN 3 13 RF_OUT GND 4 12 GND PA_EN 5 11 GND 6 7 8 9 10 VDET GND VCC3 GND N/U 15 N/U 1 N/U N/U S2838a Figure 2. SKY85402-11 Pinout (Top View) Table 1. SKY85402-11 Signal Descriptions Pin Name Description Pin Name Description 1 N/U Not used; open circuit. 11 GND Ground 2 GND Ground 12 GND Ground 3 RF_IN RF input 13 RF_OUT Power amplifier RF output 4 GND Ground 14 GND Ground 5 PA_EN PA enable 15 GND Ground 6 N/U Not used; open circuit. 16 GND Ground 7 N/U Not used; open circuit. 17 GND Ground 8 N/U Not used; open circuit. 18 VCC3 Third stage supply voltage 9 VCC3 Third stage supply voltage 19 VCC2 Second stage supply voltage 10 VDET Analog power detector output 20 VCC1 First stage supply voltage Technical Description Electrical and Mechanical Specifications The SKY85402-11 PA contains all of the needed RF matching and DC biasing circuits. The device also provides an output power detector voltage. The absolute maximum ratings of the SKY85402-11 are provided in Table 2. Recommended operating conditions are specified in Table 3. Electrical specifications are provided in Tables 4, 5, and 6. The SKY85402-11 is a three-stage, SiGe BiCMOS device optimized for high linearity and power efficiency. These features make the device suitable for wideband digital applications, where PA linearity and power consumption are of critical importance (e.g., WiFi systems or WLANs). Typical performance characteristics of the SKY85402-11 are illustrated in Figures 3 through 9. The device has been characterized with the highest specified data rates for IEEE802.11ac (256 QAM). Under these stringent test conditions, the device exhibits excellent spectral purity and power efficiency. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 2 June 2, 2015 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202120I PRELIMINARY DATA SHEET • SKY85402-11: HIGH POWER (+22 dBm) 802.11ac WLAN PA Table 2. SKY85402-11 Absolute Maximum Ratings (Note 1) Parameter Symbol Minimum Maximum Units V Supply voltage VCC1, VCC2, VCC3 –0.3 +5.5 Enable voltage PA_EN –0.3 +3.6 V RF input power PIN +12 dBm Operating temperature TOP –40 +85 C Storage temperature TST –40 +150 C Junction temperature TJ +160 C Thermal resistance ΘJC 14.9 C/W 1000 V Electrostatic discharge: Human Body Model (HBM), Class 1C 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. SKY85402-11 Recommended Operating Conditions Parameter Symbol Minimum Typical Maximum Units 3.0 5.00 5.25 V 3.6 V +25 +85 C Supply voltage VCC1, VCC2, VCC3 Enable voltage PA_EN 1.8 Case operating temperature TOP –40 Table 4. SKY85402-11 Electrical Specifications: DC Characteristics (Note 1) (VCC1 = VCC2 = VCC3 = 5.0 V, PA_EN = 3.3 V, TOP = +25 C as Measured on the Evaluation Board, Unless Otherwise Noted) Parameter Supply current Symbol ICC Quiescent current ICQ Enable voltage: High Low PAEN_H PAEN_L Enable current IEN Test Condition Min Typical Max Units POUT = +22 dBm, MCS9, 5 V 450 495 mA POUT = +25 dBm, MCS7, 5 V 802.11ac: 560 615 mA PA_EN = 0 V, No RF 20 100 μA No RF 335 1.8 0 150 mA 3.6 0.5 V V 200 μA 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 202120I • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 2, 2018 3 PRELIMINARY DATA SHEET • SKY85402-11: HIGH-POWER (+22 dBm) 802.11ac WLAN PA Table 5. SKY85402-11 Electrical Specifications: General (Note 1) (VCC1 = VCC2 = VCC3 = 5.0 V, PA_EN = 3.3 V, TOP = +25 C, Unless Otherwise Noted) Parameter Symbol Frequency range f Output power POUT 1 dB output compression point Test Condition Min Typical 5.15 OP1dB 802.11ac, MCS9, –35 dB DEVM, HT80, 5 V +20.5 802.11n, MCS7, –30 dB DEVM, HT40, 5 V MCS0, 5 V, HT20, mask compliant PIN = CW 5.85 +23 +25 dBm +26 +27.5 dBm +28 +29 dBm |S21| 31 32 |S11| 8 14 S21 2fo, 3fo Rise and fall time tR, tF Stability Ruggedness Ru GHz dBm Input return loss 2nd and 3rd harmonics Units +22 Small signal gain Gain variation over band Max 36 ±1.5 POUT = +23 dBm –50 dB dB dB –45 dBm/MHz 0.5 μs POUT = +28 dBm, VSWR = 6:1, all phases All non-harmonically related outputs < –50 dBc/100 kHz – PIN = +10 dBm, VSWR = 6:1, all phases No damage – Note 1: Performance is guaranteed only under the conditions listed in this table. Table 6. SKY85402-11 Electrical Specifications: Power Detector Characteristics (Note 1) (VCC = 5.0 V, PA_EN = 3.3 V, TOP = +25 C, f = 5.4 GHz, Unless Otherwise Noted) Parameter Symbol Output power detector range PDR Detector voltage VDET Detector accuracy ERRDET Test Condition Min Typical 0 Max Units OP1dB dBm POUT = +28 dBm 0.85 V POUT = +25 dBm 0.65 V POUT = No RF 0.30 V ΔPOUT @ constant VDET, +25 dBm: 5.15 GHz to 5.32 GHz. 0.65 V –0.5 +0.5 dB 5.32 GHz to 5.70 GHz, 0.66 V –0.5 +0.5 dB 5.70 GHz to 5.85 GHz, 0.88 V –0.5 +0.5 dB Detection variation at VSWR = 3:1 ±1.5 dB Output impedance PDZOUT 2 kΩ DC load impedance PDZLOAD 26.5 kΩ 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 4 June 2, 2015 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202120I PRELIMINARY DATA SHEET • SKY85402-11: HIGH POWER (+22 dBm) 802.11ac WLAN PA Typical Performance Characteristics (VCC1 = VCC2 = VCC3 = 5.0 V, TOP = +25 C, Unless Otherwise Noted) 5.0 4.5 3.5 4.0 3.0 2.5 3.0 DEVM (%) DEVM (%) 3.5 2.5 2.0 1.5 0.5 0 +7 +9 +11 +13 +15 +17 +19 +21 +23 +25 1.5 1.0 5180 MHz 5500 MHz 5805 MHz 3.0% 1.8% 1.0 2.0 5150 MHz 5500 MHz 5850 MHz 802.11n Limit 802.11ac Limit 0.5 0 +7 +27 +9 +11 +13 Output Power (dBm) 35 0.80 34 0.75 33 0.70 32 0.65 31 30 29 28 +19 +21 +23 +25 +27 5150 MHz 5500 MHz 5850 MHz 0.60 0.55 0.50 0.45 5150 MHz 5500 MHz 5850 MHz 27 0.40 26 0.35 +10 +12 +14 +16 +18 +20 +22 +24 +26 0.30 +8 +28 +10 +12 +14 Output Power (dBm) +16 +18 +20 +22 +24 +26 +28 Output Power (dBm) Figure 5. Gain vs Output Power @ 5 V (R8 and R11 with 0 Ω) Figure 6. Total Current vs Output Power @ 5 V 1.0 +40 5500 MHz 5850 MHz 0.9 S11 S12 S21 S22 +20 0.8 S-Parameter (dB) Detector Voltage (V) +17 Figure 4. DEVM vs Output Power (802.11ac, MCS9, HT40, 5 V) Current (mA) Gain (dB) Figure 3. DEVM vs Output Power (802.11ac, MCS9, HT80, 5 V) 25 +8 +15 Output Power (dBm) 0.7 0.6 0.5 0.4 0.3 0.2 0 –20 –40 –60 0.1 0 +3 –80 +5 +7 +9 +11 +13 +15 +17 +19 +21 +23 Output Power (dBm) Figure 7. Detector Voltage vs Output Power +25 +27 0 2 4 6 8 10 12 14 16 18 20 Frequency (GHz) Figure 8. S-Parameters vs Frequency Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202120I • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 2, 2018 5 PRELIMINARY DATA SHEET • SKY85402-11: HIGH-POWER (+22 dBm) 802.11ac WLAN PA –50 Harmonics (dBm/MHz) –52 –54 –56 –58 –60 –62 –64 –66 2nd Harmonics 3rd Harmonics –68 –70 5200 5300 5400 5500 5600 5700 5800 Frequency (MHz) Figure 9. Harmonics vs Frequency (@ +25 dBm) Evaluation Board Description Circuit Design Considerations The SKY85402-11 Evaluation Board is used to test the performance of the SKY85402-11 WLAN PA. A schematic diagram of the SKY85402-11 Evaluation Board is shown in Figure 10. A photograph of the Evaluation Board is shown in Figure 11. Component values for the SKY85402-11 Evaluation Board are listed in Table 7. The following design considerations are general in nature and must be followed regardless of final use or configuration: Evaluation Board Setup Procedure Paths to ground should be made as short as possible. The ground pad of the SKY85402-11 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. 1. Connect system ground to pin 2 of connector J6. 2. Apply 5.0 V to pin 7 of connector J6. 3. By applying 3.3 V on PA_EN (pin 6 of the J5 header), the PA is enabled. By placing a ground on PA_EN, the PA is disabled and placed in a shutdown state, drawing minimal current. 4. The 5 GHz amplifier performance can be monitored by applying an RF signal to connector J2 (RF_IN). Monitor the output power on the RF_OUT port connector, J1. 5. Detector performance can be monitored on pin 4 of connector J5. CAUTION: Do not overdrive the amplifier by applying too much RF on the device input. A suitable starting input power setting is –20 dBm. 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. For further information, refer to the Skyworks Application Note PCB Design Guidelines for High Power Dissipation Packages, document number 201211. Bypass capacitors should be used on the DC supply lines. Refer to the schematic drawing in Figure 10 for further details. The RF lines should be well separated from each other with solid ground in between traces to maximize input-to-output isolation. The RF_IN and RF_OUT ports are DC short to ground. These ports need to be DC blocked with general purpose 10 pF capacitors if there is DC present on the traces connecting to the ports. The RF_IN and RF_OUT trace losses measured from device pin to SMA connector are 0.2 dB each. NOTE: A poor connection between the ground pad and ground increases junction temperature (TJ), which reduces the life of the device. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 6 June 2, 2015 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202120I PRELIMINARY DATA SHEET • SKY85402-11: HIGH POWER (+22 dBm) 802.11ac WLAN PA Package Dimensions The PCB layout footprint for the SKY85402-11 is provided in Figure 12. Typical part markings are shown in Figure 13. Package dimensions are shown in Figure 14, and tape and reel dimensions are provided in Figure 15. 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 SKY85402-11 is rated to Moisture Sensitivity Level 3 (MSL3) 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. 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. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202120I • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 2, 2018 7 PRELIMINARY DATA SHEET • SKY85402-11: HIGH-POWER (+22 dBm) 802.11ac WLAN PA GND 3 4 VCC3A VCC1 2 GND GND 1 VCC2 VCC0 J6 Header 5 6 7 R2 0Ω R8 27 Ω R3 0Ω R11 13 Ω C20 4.7 uF C6 1 nF C9 1 nF VCC Bridge C8 100 nF 17 4 GND 14 RF_OUT 13 RF_IN GND GND PA_EN GND N/U 5 GND 6 7 × 8 × 9 J1 L1 1.0 nH C12 0.4 pF 12 RF Output 11 VDET RF Input 15 VCC3 3 GND N/U 2 J2 N/U N/U 1 16 GND 18 VCC3 GND 19 VCC1 VCC2 20 10 × R1 26.7 kΩ C7 100 nF C1 180 pF VCC Bridge J5 Header 7 VCC3B 6 PA_EN 5 GND 4 GND 3 VDET 2 DATA 1 CLK Note: These pins are not used for this product application. Notes: 1. Components designated as DNI are not shown in this schematic. 2. The 0 Ω resistors R2 and R3 are not required in the final application. Y0571 Figure 10. SKY85402-11 Evaluation Board Schematic Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 8 June 2, 2015 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202120I PRELIMINARY DATA SHEET • SKY85402-11: HIGH POWER (+22 dBm) 802.11ac WLAN PA Y0572 Figure 11. SKY85402-11 Evaluation Board Table 7. SKY85402-11 Evaluation Board Bill of Materials Component Size Value Vendor C1 0402 180 pF Murata C6, C9 0402 1 nF C7, C8 0402 100 nF C12 0402 0.4 pF Murata Mfr Part Number Comments GRM1555C1H181JA01 Multilayer ceramic Murata GRM1555C1H102JA01 Multilayer ceramic Murata GRM155R71C104KA88D Multilayer ceramic GJM1555C1HR40BB01 RF, High Q, Low Loss C20 0603 4.7 uF Murata GRM188R60J475KE19 Multilayer ceramic J1, J2 End launch SMA Johnson Components 142-0701-851 SMA end launch straight jack receptacle - tab contact J5, J6 100 mil 7X1 Samtec TSW-107-07-G-S 100 mil header L1 0402 1.0 nH Murata LQG15HN1N0S02 High frequency multilayer Z434-B Skyworks Solutions Inc. Z434-B PCB PCB1 R1 0402 26.7 kΩ Panasonic ERJ2RKF2672 Thick film chip resistor R2, R3, R5, R6 0402 0Ω Panasonic ERJ2GEJ0R0 Thick film chip resistor R8 0402 27 Ω Panasonic ERJ2GEJ270 Thick film chip resistor R11 0402 13 Ω Panasonic ERJ2GEJ13R0 Thick film chip resistor U1 QFN 400 X 400 SKY85402-11 Skyworks Solutions Inc. SKY85402 802.11ac +22dBm PA Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202120I • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 2, 2018 9 PRELIMINARY DATA SHEET • SKY85402-11: HIGH-POWER (+22 dBm) 802.11ac WLAN PA 4.40 2.60 0.25 Typ. 20 19 18 17 4.40 0.25 Typ. 16 20 18 17 16 0.70 Typ. 0.70 Typ. 4.40 19 1 15 2 14 3 13 0.508 Typ. 0.20 2.60 1 15 2 14 3 13 4 12 0.95 Typ.4 12 5 11 5 11 6 7 8 9 Package Outline 10 6 7 8 9 4.40 10 4X 0.20 0.500 Typ. 0.508 Typ. 25X ø0.25 0.500 Typ. 0.95 Typ. Board Metal & Via Pattern Top View (Note 4) Package Outline 0.20 Stencil Aperture Top View (Note 5) 63% Solder Converage On Center Pads 4.50 0.35 Typ. 20 19 18 17 16 0.80 Typ. 4.50 1 15 2 14 3 13 4 12 5 11 6 7 8 9 10 0.500 Typ. 2.40 2.40 Package Outline Solder Mask Opening Top View (Note 6) Notes: 1. All dimensions are in millimeters. 2. Dimensioning and tolerancing according to ASME Y14.5M-1994. 3. Unless specified, dimensions are symmetrical about center lines. 4. Via hold recommendations: 30 to 35 μm Cu via wall plating, via holes should be tented with solder mask on the backside and filled with solder. 5. Stencil recommendations: 0.125 mm stencil thickness, laser cut apertures, trapezoidal walls, and rounded corners offer better paste release. 6. Solder mask recommendations: contact board fabricator for recommended solder mask offset and tolerance. Figure 12. PCB Layout Footprint for the SKY85402-11 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 10 June 2, 2015 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202120I S2701 PRELIMINARY DATA SHEET • SKY85402-11: HIGH POWER (+22 dBm) 802.11ac WLAN PA Pin 1 Indicator SKY85402 XXXXXXXXX YYWW CC Skyworks Part # Lot # Date Code/ Country Code Figure 13. Typical Part Markings (Top View) 0.850 ± 0.050 2X 4.000 ± 0.050 0.15 C A See Note 3 B 20 4.000 ± 0.050 19 18 17 2.500 ± 0.050 0.10 M C A B 0.30 x 45° 0.203 Ref. 16 16 1 15 15 2 14 14 3 13 4 12 5 11 2.500 ± 0.050 17 18 19 20 1 R0.05 Typ. 2 13 3 12 4 11 5 0.500 0.10 M C A B Seating Plane 2X 0.15 C 6 7 8 9 10 0–0.05 C Top View 10 20X 0.250 ± 0.050 0.10 M C A B 0.05 M C Side View 9 8 7 6 20X 0.500 ± 0.050 Bottom View NOTES: 1. All measurements are in millimeters. 2. Dimensioning and tolerancing according to ASME Y14.5M-1994. Unless otherwise specified the following values apply: Decimal Tolerance: Angular Tolerance: X.X (1 place) ± 0.1 mm ±1° X.XX (2 places) ± 0.05 mm X.XXX (3 places) ± 0.025 mm 3. Terminal #1 identification mark located within marked area. 4. Unless specified, dimensions are symmetrical about center lines. S2836 Figure 14. SKY85402-11 20-Pin QFN Package Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202120I • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 2, 2018 11 PRELIMINARY DATA SHEET • SKY85402-11: HIGH-POWER (+22 dBm) 802.11ac WLAN PA 2.0 ±0.1 (Note 1) Ø1.5 ±0.05 1.75 ±0.1 B A Min 12.00 ±0.3 Ø1.55 5.50 ±0.1 (Note 1) 0.30 ±0.05 4.0 ±0.1 (Note 2) 4.35 ±0.1 Ref 3° B 8.00 ±0.1 4.35 ±0.1 1.10 ±0.1 Ref R0.25 Section B Ref R0.25 Notes: 1. Measured from center line of sprocket hole to center line of pocket. 2. Cumulative tolerance of 10 sprocket holes is ±0.20. 3. All dimensions are in millimeters, unless otherwise specified. Detail A Figure 15. SKY85402-11 20-Pin QFN Tape and Reel Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 12 June 2, 2015 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202120I Y0502 PRELIMINARY DATA SHEET • SKY85402-11: HIGH POWER (+22 dBm) 802.11ac WLAN PA Ordering Information Model Name SKY85402-11: High-Power WLAN Power Amplifier Manufacturing Part Number SKY85402-11 Evaluation Board Part Number SKY85402-11-EK1 Copyright © 2012-2015 Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. 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Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202120I • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 2, 2018 13