DATA SHEET SKY12239-11: High IIP3 10 MHz to 1.5 GHz Voltage-Controlled Variable Attenuator Applications Automatic power leveling/gain control circuits in cellular base V CONTROL stations and point-to-point radio IF chains L IN L OUT (1 V to 5 V) 6 5 4 General wireless systems including WiMAX, LTE, WCDMA, VSAT, and military communications Features RF IN13 RF OUT 10 MHz to 1.5 GHz broadband operating range Low insertion loss: 2.5 dB 700 MHz Maximum attenuation level: 40 dB 700 MHz Bias Control voltage range: 1 to 5 V Circuitry High IIP3: +50 dBm 2 Low current consumption: < 2 mA maximum attenuation 203556-001 V SUPPLY Small MCM (8-pin, 3.8 x 3.8 x 1 mm) package (2.7 V) (MSL3, 260 C per JEDEC J-STD-020) Figure 1. SKY12239-11 Block Diagram TM Skyworks Green products are compliant with Description all applicable legislation and are halogen-free. The SKY12239-11 is a voltage-controlled variable attenuator from For additional information, refer to Skyworks Skyworks series of broadband, flat attenuation, high third order TM Denition of Green , document number input intercept point (IIP3) components. The device has been SQ040074. designed to operate over the 10 MHz to 1.5 GHz frequency band, and is specifically optimized for use as a wide dynamic range, low distortion attenuator. The SKY12239-11 provides monotonic attenuation performance over its entire control voltage range. This attenuator is comprised of four matched PIN diodes that are biased using an external 4 6 5 control voltage signal. The attenuator requires no external components. It operates with a control voltage range of 1 to 5 V and a 2 mA typical control current at maximum attenuation. GND RF OUT RF IN 1 3 A functional block diagram is shown in Figure 1. The pin configuration and package are shown in Figure 2. Signal pin 2 assignments and functional pin descriptions are provided in 203556-002 Table 1. V SUPPLY Figure 2. SKY12239-11 Pinout (Top View) Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 203556B Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice February 9, 2017 1 L IN L OUT V CONTROLDATA SHEET SKY12239-11: VOLTAGE-CONTROLLED VARIABLE ATTENUATOR Table 1. SKY12239-11 Signal Descriptions Pin Name Description Pin Name Description 1 RF IN RF input, AC coupled. 5 L OUT Phase compensation inductor output No external components required. 2 V SUPPLY Fixed reference supply, 2.7 VDC. 6 L IN Phase compensation inductor input 3 RF OUT RF output, AC coupled. 7 GND Paddle of the device. Ground to the Applications Board. No external components required. Provides thermal contact and RF ground. 4 V CONTROL Variable reference supply, 1.0 V to 5.0 VDC. of the PIN diodes. Maximum attenuation occurs when the Technical Description resistance of the PIN diodes is at maxmimum (control voltage of The SKY12239-11 is a 50 matched voltage controlled variable approximately 1 VDC). attenuator with monotonic attenuation performance from 10 MHz to 1.5 GHz over its entire control voltage range. This attenuator requires no external biasing or RF matching components. Electrical and Mechanical Specifications Monotonic performance means the attenuation increases or The absolute maximum ratings of the SKY12239-11 are provided decreases as the applied DC voltage increases or decreases. This in Table 2. Electrical specifications are provided in Table 3. attenuator is comprised of four matched PIN diodes that terminate two ports of an internal matching network. Performance characteristics for the SKY12239-11 are illustrated in Figures 3 through 8. The diodes are biased using an external control voltage signal that sets the bias current through a resistive network. The attenuator operates with a control voltage range of 1 to 5 V and a 2 mA typical control current at maximum attenuation. As the control voltage increases, the bias current through each of the PIN diodes also increases. This increased bias current lowers the resistance 1 Table 2. SKY12239-11 Absolute Maximum Ratings Parameter Symbol Minimum Maximum Units Control voltage VCTRL 0 5.5 V Reference voltage VSUPPLY 5.5 V RF input power (CW) PIN 1 W Control current ICC 50 mA Thermal impedance (VCTRL = 5 V, VSUPPLY = 2.7 V, PIN = +21 dBm) JC +94 C/W Storage temperature TSTG 55 +125 C Operating temperature TOP 40 +105 C Electrostatic discharge: ESD Charged Device Model (CDM), Class 4 1000 V Human Body Model (HBM), Class 1B 500 V Machine Model (MM), Class A 100 V 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. 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 February 9, 2017 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 203556B