DATA SHEET SKY12233-11: High IIP3 2.1 to 3.1 GHz Voltage-Controlled Variable Attenuator Applications Control Voltage Control Voltage RF In/Out RF Out/In Automatic power leveling/gain control circuits in cellular base stations and point-to-point radio IF chains General wireless systems including WiMAX, LTE, WCDMA, VSAT, and military communications Features 2.1 to 3.1 GHz broadband operating range Maximum attenuation value: 34 dB Control voltage range: 0 to 5 V High IIP3: +61 dBm Low current consumption: <2 mA @ maximum attenuation Small, MCM (8-pin, 4.9 x 3.2 mm) package (MSL3, 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. S1660 Figure 1. SKY12233-11 Block Diagram Description The SKY12233-11 is a voltage-controlled variable attenuator from Skyworks series of high 3rd Order Input Intercept Point (IIP3) components. The device has been designed to operate over the 2.1 to 3.1 GHz frequency band, but is specifically optimized for use as a wide dynamic range, low distortion attenuator, centered at 2.60 GHz. The SKY12233-11 provides monotonic attenuation performance over its entire control voltage range. This attenuator is comprised of a pair of matched PIN diodes that terminate two ports of its internal 90-degree hybrid coupler. The diodes are biased using an external control voltage signal. The attenuator requires no external components. It operates with a control voltage range of 0 to 5 V and a 1.7 mA typical control current at maximum attenuation. 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 201925E • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • March 25, 2014 1 GND J1 8 7 6 2 3 4 V_CONTROL 5 GND 1 V_CONTROL GND J2 DATA SHEET • SKY12233-11 VARIABLE ATTENUATOR GND S1661 Figure 2. SKY12233-11 Pinout – 8-Pin MCM (Top View) Table 1. SKY12233-11 Signal Descriptions Pin Name Description Pin Name Description 1 GND Ground. Must be connected to PCB ground using lowest possible inductance path. 5 GND Ground. Must be connected to PCB ground using lowest possible inductance path. 2 V_CONTROL Control voltage input (voltage applied is nominally equal to the voltage applied to pin 4) 6 J1 RF input/output 3 GND Ground. Must be connected to PCB ground using lowest possible inductance path. 7 GND Ground. Must be connected to PCB ground using lowest possible inductance path. 4 V_CONTROL Control voltage input (voltage applied is nominally equal to the voltage applied to pin 2) 8 J2 RF output/input Technical Description The SKY12233-11 is a 50 Ω matched voltage controlled variable attenuator with monotonic attenuation performance from 2.1 to 3.1 GHz over its entire control voltage range. This attenuator requires no external biasing or RF matching components. Monotonic performance means the attenuation increases as the applied DC voltage increases. This attenuator is comprised of a pair of matched PIN diodes that terminate two ports of an internal 90-degree hybrid coupler. 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 0 to 5 V and a 1.7 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 of the PIN diodes. Maximum attenuation occurs when the resistance of the PIN diodes equals the characteristic impedance of the hybrid coupler ports, which they terminate. This occurs at a control voltage of approximately 5 VDC. Electrical and Mechanical Specifications The absolute maximum ratings of the SKY12233-11 are provided in Table 2. Electrical specifications are provided in Table 3. Performance characteristics for the SKY12233-11 are illustrated in Figures 3 through 8. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 2 March 25, 2014 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 201925E DATA SHEET • SKY12233-11 VARIABLE ATTENUATOR Table 2. SKY12233-11 Absolute Maximum Ratings Parameter Symbol Minimum Maximum Units 10 V Control voltage VCONTROL RF input power (CW) PIN 4 W Control current Icc 50 mA Diode reverse bias voltage 50 V Storage temperature TSTG –40 +85 C Operating temperature TOP –40 +85 C Electrostatic discharge: ESD 500 250 50 V V V Charged Device Model (CDM), Class 3 Human Body Model (HBM), Class 1A Machine Model (MM), Class A Note: 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. SKY12233-11 Electrical Specifications (Note 1) (TOP = +25 C, VCONTROL = 0 to 5 V, PIN = 0 dBm, Characteristic Impedance [ZO] = 50 Ω, Unless Otherwise Noted) Parameter Symbol Test Condition Min Typical 25 34 dB VCONTROL = 5 V 1.7 mA VCONTROL = 0 V, f = 2.1 to 3.1 GHz 1.5 Attenuation Attn VCONTROL = 5 V, f = 2.6 GHz Control current ICC Insertion loss IL Return loss RL VCONTROL = 0 V, f = 2.1 to 3.1 GHz 3rd Order Input Intercept Point (Note 2) IIP3 PIN = +8 dBm each tone, VCONTROL = 0 V, f1 = 2.600 GHz, f2 = 2.610 GHz 7 Max 2.5 Units dB 20 dB +61 dBm Note 1: Performance is guaranteed only under the conditions listed in this table. Note 2: Minimum specification is guaranteed by design and is not 100% production tested. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201925E • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • March 25, 2014 3 DATA SHEET • SKY12233-11 VARIABLE ATTENUATOR Typical Performance Characteristics (TOP = +25 C, VCONTROL = 0 to 5 V, PIN = 0 dBm, Characteristic Impedance [ZO] = 50 Ω, J1 = Input Port, J2 = Output Port, Unless Otherwise Noted) 0 0 –5 –10 –10 Attenuation (dB) –15 Attenuation (dB) +25 °C +85 °C –40 °C –5 –20 –25 –30 –35 0V 1V 2V 3V 4V 5V –40 –45 –50 1.5 2.0 2.5 3.0 3.5 –15 –20 –25 –30 –35 –40 –45 –50 4.0 0 1 2 3 4 5 6 Control Voltage (V) Frequency (GHz) Figure 4. Attenuation vs Control Voltage Over Temperature (f = 2.6 GHz) Figure 3. Attenuation vs Frequency Over Control Voltage 0 S-Parameter Magnitude (dB) +2 Attenuation Flatness (dB) 0 –2 –4 –6 –8 –10 –12 –5 –10 –15 –20 S11 S21 S22 –25 –14 –16 0 1 2 3 4 5 Control Voltage (V) Figure 5. Attenuation Flatness vs Control Voltage (f = 2.1 to 3.1 GHz) 6 –30 1.5 2.0 2.5 3.0 3.5 Frequency (GHz) Figure 6. S-Parameter Magnitude vs Frequency Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 4 March 25, 2014 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 201925E 4.0 0 0 –5 –5 Output Return Loss (dB) Input Return Loss (dB) DATA SHEET • SKY12233-11 VARIABLE ATTENUATOR –10 –15 –20 0V 1V 2V 3V 4V 5V –25 –30 1.5 2.0 2.5 3.0 3.5 –10 –15 –20 0V 1V 2V 3V 4V 5V –25 4.0 Frequency (GHz) Figure 7. Input Return Loss vs Frequency Over Control Voltage –30 1.5 2.0 2.5 3.0 3.5 4.0 Frequency (GHz) Figure 8. Output Return Loss vs Frequency Over Control Voltage Evaluation Board Description Package and Handling Information The SKY12233-11 Evaluation Board is used to test the performance of the SKY12233-11 variable attenuator. An assembly drawing for the Evaluation Board is shown in Figure 9. The Evaluation Board layer detail is shown in Figure 10. Since this 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 attenuation level of the SKY12233-11 is controlled by applying 0 to 5 V to the V_CONTROL pins. Package Dimensions The PCB layout footprint for the SKY12233-11 is shown in Figure 11. Typical case markings are shown in Figure 12. Package dimensions for the 8-pin MCM are shown in Figure 13, and tape and reel dimensions are provided in Figure 14. The SKY12233-11 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, PCB Design & SMT Assembly/Rework Guidelines for MCM-L Packages, document number 101752. 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 201925E • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • March 25, 2014 5 DATA SHEET • SKY12233-11 VARIABLE ATTENUATOR S1662a Figure 9. SKY12233-11 Evaluation Board Assembly Diagram Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 6 March 25, 2014 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 201925E DATA SHEET • SKY12233-11 VARIABLE ATTENUATOR Cross Section Name Thickness (in) Material Top Soldermask L1 (0.0028) Cu foil 0.012 ± 0.0006 Rogers RO4003C Core L2 (0.0014) Cu foil Laminate (Note 1) FR4 Prepreg L3 (0.0014) Cu foil 0.010 ± 0.0006 FR4 Core (0.0028) Cu foil Laminate Laminate L4 Bottom Soldermask Note 1: Adjust this thickness to meet total thickness goal of 0.062 ± 0.005 inches. S2531 Figure 10. Layer Detail Physical Characteristics Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201925E • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • March 25, 2014 7 DATA SHEET • SKY12233-11 VARIABLE ATTENUATOR 5.2 Pin 8 5.2 6x 0.8 Pin 8 4x 0.8 6x 0.75 4x 0.75 2x 0.8 3.5 3.5 Pin 1 Pin 1 0.25 Package Outline Package Outline 1.37 Typ. 1.37 Typ. 2x 0.93 Stencil Aperture Top View Metallization Top View 5.3 Pin 8 6x 0.9 6x 0.85 2x 0.9 3.6 Pin 1 Package Outline 1.37 Typ. All measurements in millimeters 2x 1.03 Solder Mask Opening Top View Figure 11. SKY12233-11 PCB Layout Footprint Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 8 March 25, 2014 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 201925E S1667 DATA SHEET • SKY12233-11 VARIABLE ATTENUATOR Pin 1 Indicator Skyworks Part #, Revision # Lot # 12233-11 XXXXXX.XX YYMM CC YY = Calendar Year MM = Month Package Sealed CC = County Code Pin 1 Indicator 0 8X SMT Pad B 4.9 0.15 A B C 4X 1.37 Figure 12. Typical Part Markings (Top View) C Pin 8 Pin 1 Indicator Pin 1 3.2 0 B A A 1 ± 0.1 0.15 A B C 0.1 Top View Side View Bottom View 0.337 ± 0.1 0.4 ± 0.05 R(0.1) R(0.1) Metal Pad Edge 0.4 ± 0.05 0.25 ± 0.1 Metal Pad Edge (0.1) (0.1) Detail A Detail B SMT Pad 3X This Rotation 3X Rotated 180o SMT Pad 1X This Rotation 1X Rotated 180o All measurements are in millimeters. Dimensioning and tolerancing according to ASME Y14.5M-1994. S1554 Figure 13. SKY12233-11 8-Pin MCM Package Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201925E • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • March 25, 2014 9 DATA SHEET • SKY12233-11 VARIABLE ATTENUATOR ∅1.50 + 0.1/–0.0 Pin #1 0.30 ± 0.05 4.00 ± 0.10 2.00 ± 0.05 5.20 ± 0.10 B A A 12.00 ± 0.30 5.50 ± 0.05 1.75 ± 0.10 B 8.00 ± 0.10 1.30 ± 0.10 ∅1.50 Min. 3.50 ± 0.10 B Notes: 1. Carrier tape: black conductive polycarbonate or polystyrene. 2. Cover tape material: transparent conductive PSA. 3. Cover tape size: 9.30 mm width. 4. Sprocket hole (10) pitch cumulative tolerance: ±0.20 mm. 5. All measurements are in millimeters. A S1680 Figure 14. SKY12233-11 Tape and Reel Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 10 March 25, 2014 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 201925E DATA SHEET • SKY12233-11 VARIABLE ATTENUATOR Ordering Information Model Name SKY12233-11: Voltage-Controlled Variable Attenuator Manufacturing Part Number SKY12233-11 Evaluation Board Part Number SKY12233-11-EVB Copyright © 2012-2014 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. 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. 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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, the Skyworks symbol, and “Breakthrough Simplicity” 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 201925E • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • March 25, 2014 11