DATA SHEET SKY65405-21: 2.4 GHz Low-Noise Amplifier Applications  802.11b/g/n PC cards, NICs, and USB dongles V_ENABLE VCC  802.11b/g/n tablets  802.11b/g/n access points, routers, and gateways Bias  2.4 GHz ISM radios Features RF_IN 2.4 GHz RF_OUT LNA  Ultra-low noise figure: 1.1 dB  2.4 to 2.5 GHz operation S1367  Enable/disable mode Figure 1. SKY65405-21 LNA Block Diagram  High IIP3: +9 dBm  High gain: 15 dB Description  2.8 to 5.0 V single-supply operation The SKY65405-21 is an ultra-low-noise amplifier (LNA) intended  DFN (6-pin, 1.5 x 1.5 mm) package for 2.4 GHz wireless receiver applications. Its industry-leading (MSL1, 260 C per JEDEC J-STD-020) noise figure (NF), together with high linearity, makes it ideal as a first-stage LNA in 802.11b/g wireless local area network (WLAN) radios. Skyworks GreenTM products are compliant with all applicable legislation and are halogen-free. Operating with a single supply voltage, the SKY65405-21 For additional information, refer to Skyworks consumes only 12 mA of current. The device includes a shutdown Definition of GreenTM, document number mode to save power when the receiver is inactive. SQ04–0074. The tiny package footprint of the SKY65405-21, requiring only four external components, enables the industry’s smallest PCB area needed to implement a 2.4 GHz LNA. A block diagram of the SKY65405-21 is shown in Figure 1. The device package and pinout for the 6-pin Dual Flat No-Lead (DFN) are shown in Figure 2. Signal pin assignments and functional pin descriptions are described in Table 1. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201446H • Skyworks Proprietary Information • Products and Product Information Are Subject To Change Without Notice • November 1, 2017 1

DATA SHEET • SKY65405-21: LNA V_ENABLE 1 6 VCC GND 2 5 GND RF_IN 3 4 RF_OUT S1351 Figure 2. SKY65405-21 Pinout (Top View) Table 1. SKY65405-21 Pin Assignments and Signal Descriptions Pin Name Description 1 V_ENABLE Enable control input 2 GND Ground 3 RF_IN LNA input 4 RF_OUT LNA output 5 GND Ground 6 VCC Supply voltage for LNA Technical Description Electrical and Mechanical Specifications The SKY65405-21 is fully 50 Ω matched requiring only a simple The absolute maximum ratings of the SKY65405-21 are provided bypass circuit on pin 6 (VCC). An external resistor on the in Table 2. The recommended operating conditions are specified V_ENABLE signal (pin 1) allows a wide range of control voltages in Table 3, and electrical specifications are provided in Table 4. to be used. Shutdown mode is achieved by switching the Table 5 provides the control logic for the SKY65405-21. V_ENABLE signal to 0 V. Performance characteristics for the SKY65405-21 are illustrated in Figures 3, 4, and 5. Table 2. Absolute Maximum Ratings Parameter Symbol Minimum Maximum Units Supply voltage VCC 0 5.5 V DC voltage at control ports VENABLE 0 5.0 V Power into LNA inputs PIN, LNA +2 dBm Operating temperature TA -40 +85 C Storage temperature TSTG -40 +125 C ESD HANDLING: 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 when handling or transporting. Static charges may easily produce potentials of several kilovolts on the human body or equipment, which can discharge without detection. Industry-standard ESD handling precautions should be used at all times. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 2 November 1, 2017 • Skyworks Proprietary Information • Products and Product Information Are Subject To Change Without Notice • 201446H

DATA SHEET • SKY65405-21 LNA Table 3. Recommended Operating Conditions (@ +25 °C, VCC = 3 V) Parameter Symbol Min Typ Max Units Supply voltage VCC 2.8 3.3 5.0 V Enable voltage: VEN High 2.5 3.3 3.5 V Low 0 0 0.2 V RF frequency range f 2400 2500 MHz Operating temperature range TA -40 +25 +85 C Table 4. Electrical Characteristics (2400 to 2500 MHz)1 (VCC = 3 V, TA = +25 C, V_ENABLE = 3 V, Unless Otherwise Noted) Parameter Symbol Test Conditions Min Typ Max Units Enable Mode Gain S21 13 15 17 dB Noise figure NF 1.1 1.5 dB Third order input intercept point IIP3 +7 +9 dBm In-band 1 dB compression point at input IP1dB -2 0 dBm Out-of-band 1 dB compression point at input IP1dB +12 +15 dBm Input/output return loss S11, S22 ZS/L = 50  -10 -6 dB Reverse isolation S12 18 22 dB V_ENABLE = 3 V 12 16 mA Current V_ENABLE = 0 V <1 5 μA V_ENABLE current IEN_HIGH V_ENABLE = 3 V 2.3 3.0 mA Rise time tRISE 175 280 ns Fall time tFALL 145 250 ns Disable Mode (Small Signal Input) Gain S21 -17 -14 -11 dB Input return loss S11 -2 -1 dB Output return loss S22 -3 -2 dB V_ENABLE current IEN_LOW V_ENABLE = 0 V to 0.2 V 1.7 1.9 μA 1 Performance is guaranteed only under the conditions listed in this table. Table 5. Mode Control Logic V_ENABLE Description Voltage (V) 3 LNA is enabled 0 LNA is disabled Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201446H • Skyworks Proprietary Information • Products and Product Information Are Subject To Change Without Notice • November 1, 2017 3

DATA SHEET • SKY65405-21: LNA Typical Performance Characteristics S11 S21 S21 S22 S22 S11 Figure 3. S-Parameter Data 1.4 1.2 B) 1.0 d e ( 0.8 ur g Fi 0.6 e s oi 0.4 N 0.2 0 2.400 2.425 2.450 2.475 2.500 Frequency (GHz) Figure 4. Noise Figure vs Frequency +16 +14 +12 +10 m) B d +8 3 ( IIP +6 +4 +2 0 2.400 2.425 2.450 2.475 2.500 Frequency (GHz) Figure 5. IIP3 vs Frequency Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 4 November 1, 2017 • Skyworks Proprietary Information • Products and Product Information Are Subject To Change Without Notice • 201446H

DATA SHEET • SKY65405-21 LNA Evaluation Board Description An application schematic diagram for the SKY65405-21 is shown in Figure 6. R1 L1 100 Ω 1 6 1.8 nH Control Input V_ENABLE VCC VCC C2 0.1 μF 2 5 GND GND L2 1.8 nH 3 4 RF Input RF_IN RF_OUT RF Output C3 0.5 pF S1368 Figure 6. SKY65405-21 Schematic Diagram Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201446H • Skyworks Proprietary Information • Products and Product Information Are Subject To Change Without Notice • November 1, 2017 5

DATA SHEET • SKY65405-21: LNA Package Dimensions Package and Handling Information The PCB layout footprint for the SKY65405-21 is provided in Instructions on the shipping container label regarding exposure Figure 7. Typical part markings are shown in Figure 8. Package to moisture after the container seal is broken must be followed. dimensions are shown in Figure 9, and tape and reel Otherwise, problems related to moisture absorption may occur dimensions are provided in Figure 110. when the part is subjected to high temperature during solder assembly. The SKY65405-21 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. 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. 6X 0.55 0.15 X 45o 6X 0.35 6X 0.25 0.50 Pitch 0.60 1.20 0.05 7X Exposed Solder 0.20 Area 0.35 0.70 S1535 Figure 7. SKY65405-21 PCB Layout Footprint (Top View) Pin 1 Indicator Skyworks Part # Figure 8. Typical Part Markings Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 6 November 1, 2017 • Skyworks Proprietary Information • Products and Product Information Are Subject To Change Without Notice • 201446H

DATA SHEET • SKY65405-21 LNA C Seating Plane P0.in1 51 X 45o Indicator 1.5 A 0.02 +0.03/–0.02 0.70 ±0.05 B 2X 0.05 Pin 1 0.127 Ref. Indicator 1.5 1.20 ±0.05 Detail B 2X 0.05 C 6X 3 Detail A 0.05 C Exposed Pad 2X 0.05 C 0.45 ±0.05 0.05 C Top View Side View Bottom View 0.175 ± 0.075 6X 0.20 Min 0.25 ± 0.05 5 0.5 0.10 C A B NOTES: 0.05 M C 2X R0.05 1. Dimensioning and tolerancing according to ASME Y14.5M-1994. Detail A 2. All measurements are in millimeters. 3. Coplanarity applies to the exposed heat sink ground pad as well as the terminals. Scale 4X Detail B 4. Plating requirement per source control drawing (SCD) 2504. 3X This Rotation Scale 1 X 5. Dimension applies to metalized terminal, not measured in the radius area. 3X Rotated 180o Y0201 Figure 9. SKY65405-21 Package Dimensions Pin 1 4.00 ± 0.10 ϕ1.50± 0.10 2.00 ± 0.05 0.20 ± 0.02 (T) 1.75 ± 0.10 5o Max 1.78 ± 0.05 (Bo) A B A 3.50 ± 0.05 8.00 +0.30/–0.10 B 0.69 ± 0.05 (Ko) ϕ0.50± 0.05 B 5o Max 1.78 ± 0.05 (Ao) A Notes: 1. Carrier tape: black conductive polycarbonate or polystyrene. 2. Cover tape material: transparent conductive PSA. 3. Cover tape size: 5.4 mm width. 4. All measurements are in millimeters. S1382a Figure 10. SKY65405-21 Tape and Reel Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201446H • Skyworks Proprietary Information • Products and Product Information Are Subject To Change Without Notice • November 1, 2017 7

DATA SHEET • SKY65405-21: LNA Ordering Information Product Description Product Part Number Evaluation Board Part Number SKY65405-21 LNA SKY65405-21 SKY65405-21EK1 Copyright © 2010-2011, 2013, 2017 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. THE MATERIALS, PRODUCTS AND INFORMATION ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING FITNESS FOR A PARTICULAR PURPOSE OR USE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT; ALL SUCH WARRANTIES ARE HEREBY EXPRESSLY DISCLAIMED. SKYWORKS DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. SKYWORKS SHALL NOT BE LIABLE FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO ANY SPECIAL, INDIRECT, INCIDENTAL, STATUTORY, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THE MATERIALS OR INFORMATION, WHETHER OR NOT THE RECIPIENT OF MATERIALS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 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 and the Skyworks symbol are trademarks or registered trademarks of Skyworks Solutions, Inc. or its subsidiaries 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 • sales@skyworksinc.com • www.skyworksinc.com 8 November 1, 2017 • Skyworks Proprietary Information • Products and Product Information Are Subject To Change Without Notice • 201446H