SKY65405-21

DATA SHEET SKY65405-21: 2.4 GHz Low-Noise Amplifier Applications  802.11b/g/n PC cards, NICs, and USB dongles V_ENABLE  802.11b/g/n tablets VCC  802.11b/g/n access points, routers, and gateways Bias  2.4 GHz ISM radios Features 2.4 GHz LNA RF_IN RF_OUT  Ultra-low noise figure: 1.1 dB  2.4 to 2.5 GHz operation S1367  Enable/disable mode  High IIP3: +9 dBm  High gain: 15 dB  2.8 to 5.0 V single-supply operation  DFN (6-pin, 1.5 x 1.5 mm) package (MSL1, 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. Figure 1. SKY65405-21 LNA Block Diagram Description The SKY65405-21 is an ultra-low-noise amplifier (LNA) intended for 2.4 GHz wireless receiver applications. Its industry-leading 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. Operating with a single supply voltage, the SKY65405-21 consumes only 12 mA of current. The device includes a shutdown mode to save power when the receiver is inactive. 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 bypass circuit on pin 6 (VCC). An external resistor on the V_ENABLE signal (pin 1) allows a wide range of control voltages to be used. Shutdown mode is achieved by switching the V_ENABLE signal to 0 V. The absolute maximum ratings of the SKY65405-21 are provided in Table 2. The recommended operating conditions are specified in Table 3, and electrical specifications are provided in Table 4. Table 5 provides the control logic for the SKY65405-21. Performance characteristics for the SKY65405-21 are illustrated in Figures 3, 4, and 5. Table 2. Absolute Maximum Ratings Minimum Maximum Units Supply voltage Parameter VCC Symbol 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 2.8 3.3 5.0 V 2.5 0 3.3 0 3.5 0.2 V V 2500 MHz +85 C Supply voltage VCC Enable voltage: High Low VEN RF frequency range f 2400 Operating temperature range TA -40 +25 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 13 15 17 dB 1.1 1.5 dB Enable Mode Gain S21 Noise figure NF Third order input intercept point IIP3 +7 +9 dBm In-band 1 dB compression point at input IP1dB -2 0 dBm +12 +15 Out-of-band 1 dB compression point at input IP1dB Input/output return loss S11, S22 Reverse isolation S12 ZS/L = 50  -10 18 Current dBm -6 22 dB dB V_ENABLE = 3 V 12 16 mA V_ENABLE = 0 V