DATA SHEET SKY13421-486LF: 0.1-3.0 GHz DPxDT 2:1 Differential Switch Applications • GSM, DCS, PCS, CDMA, WCDMA, and TD-SCDMA differential filter switching Features • Broadband frequency range: 0.1 to 3.0 GHz • Single positive voltage control: 1.3 V to 5.0 V • Low insertion loss: 0.3 dB typical @ 1 GHz; 0.4 typical @ 2 GHz • High isolation: 28 dB typical @ 1 GHz; 22 dB typical @ 2 GHz • High P0.2dB • Low phase error: 6 degrees typical @ 2 GHz • Ultra-miniature, QFN (14-pin, 1.6 x 1.6 mm) package (MSL1, 260 °C per JEDEC J-STD-020) Figure 1. SKY13421-486LF Block Diagram Description The SKY13421-486LF is a pHEMT GaAs Double-Pole, DoubleThrow (DPxDT) switch designed for cellular infrastructure band switching applications. This device is a paired DPDT switch, controlled synchronously, that includes two Single-Pole, DoubleThrow (SPDT) switches with RF lines that cross inside the chip. The internal crossed switch arrangement is designed to switch balanced RF filters. Switching is controlled by a single control voltage. Depending on the logic voltage level applied to the control pin (VCTL), the RFCA and RFCB pins are each connected to one of two switched RF outputs (RF1A, RF1B, RF2A, or RF2B) using a low insertion loss path, while maintaining a high isolation path to the alternate port. DC blocking capacitors are required on all RF ports. The switch is manufactured in a compact, 1.6 x 1.6 mm, 14-pin exposed pad plastic Quad Flat No-Lead (QFN) package. Figure 2. SKY13421-486LF Pinout – 14-Pin QFN (Top View) 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 201655D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 24, 2013 1 DATA SHEET • SKY13421-486LF DPxDT 2:1 DIFFERENTIAL SWITCH Table 1. SKY13421-486LF Signal Descriptions Pin # Note: Name Description Pin # Name Description 1 GND Ground 8 GND Ground 2 RF1B RF port connected to RFCB and switched in tandem with RFCA/RF1A. Must be DC blocked for proper operation. 9 RFCB RF port connected to RF1B or RF2B depending on logic supplied to the VCTL pin. Must be DC blocked for proper operation. 3 RF2A RF port connected to RFCA. Switched in tandem with RFCB/RF2B. Must be DC blocked for proper operation. 10 RFCA RF common connected to RF1A or RF2A depending on logic supplied to the VCTL pin. Must be DC blocked for proper operation. 4 GND Ground 11 GND Ground 5 RF2B RF port connected to RFCB and switched in tandem with RFCA/RF2A. Must be DC blocked for proper operation. 12 VCTL DC control voltage 6 GND Ground 13 GND Ground 7 VDD DC supply voltage 14 RF1A RF port connected to RFCA and switched in tandem with RFCB/RF2B. Must be DC blocked for proper operation. Bottom ground paddle must be connected to ground through a low impedance path. Table 2. SKY13421-486LF Absolute Maximum Ratings Parameter Symbol Input power PIN Supply voltage VDD Control voltage VCTL Storage temperature TSTG Operating temperature TOP Note: Minimum 2.0 Maximum Units +30 dBm 5.5 V VDD V –40 +125 °C –40 +85 °C 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. SKY13421-486LF Recommended Operating Conditions Parameter Symbol Frequency f Control voltage: Low High VCTL_L VCTL_H Minimum Maximum Units 0.1 3.0 GHz 0 70% of VDD 30% of VDD VDD V V Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 2 June 24, 2013 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201655D DATA SHEET • SKY13421-486LF DPxDT 2:1 DIFFERENTIAL SWITCH Functional Description Electrical and Mechanical Specifications The SKY13421-486LF is comprised of a CMOS decoder that enables a differential input signal to be switched between two different differential outputs. This is particulary useful when switching between two Surface Acoustic Wave (SAW) filters. The absolute maximum ratings of the SKY13421-486LF are provided in Table 2. The recommended operating conditions are specified in Table 3 and electrical specifications are provided in Table 4. The recommended startup sequence is: Typical performance characteristics of the SKY13421-486LF are illustrated in Figures 3 through 8. Step 1: Apply VDD The state of the SKY13421-486LF is determined by the logic provided in Table 5. Step 2: Apply control voltage (VCTL) Step 3: Apply RF input The device must be turned off in the reverse order. The part can not have VCTL high without VDD applied. Table 4. SKY13421-486LF Electrical Specifications (Note 1) (VDD = 2.7 V, VCTL = 1.8 V, TOP = +25 °C, PIN = 0 dBm, Characteristic Impedance [ZO] = 50 Ω, Unless Otherwise Noted) Parameter Symbol Test Condition Min Typical Max Units 0.30 0.40 0.45 0.45 0.55 0.60 dB dB dB RF Specifications Insertion loss IL RFCA to RF1A/2A, RFCB to RF1B/2B: 0.1-1.0 GHz 1.0-2.0 GHz 2.0-2.5 GHz Isolation Iso RFCA to RF1A/2A, RFCB to RF1B/2B: 0.1-1.0 GHz 1.0-2.0 GHz 2.0-2.5 GHz 26 20 18 28 22 20 dB dB dB 15 22 dB 6 deg Return loss |S11| 0.1-2.5 GHz Phase error PE f = 2 GHz, between “on” paths 0.2 dB Compression Point P0.2dB 0.1-2.5 GHz +24 dBm 3rd Order Input Intercept Point IIP3 0.1-2.5 GHz, ∆f = 1 MHZ, PIN = +15 dBm/tone +55 dBm 50% VCTL to 90/10% RF, 90/10% RF or 10/90% RF 75 50 ns ns Switching speed +20 DC Specifications Supply voltage VDD Control voltage: Low High VCTL_L VCTL_H Supply current Control current 2.0 5.5 V 0 70% of VDD 30% of VDD VDD V V 10 μA 2 IDD 5 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 201655D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 24, 2013 3 DATA SHEET • SKY13421-486LF DPxDT 2:1 DIFFERENTIAL SWITCH Typical Performance Characteristics (VDD = 2.7 V, VCTL = 1.8 V, TOP = +25 °C, PIN = 0 dBm, Characteristic Impedance [ZO] = 50 Ω, Unless Otherwise Noted) Figure 3. Insertion Loss vs Frequency Figure 4. Isolation vs Frequency Figure 5. Return Loss vs Frequency Figure 6. Phase Error vs Frequency Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 4 June 24, 2013 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201655D DATA SHEET • SKY13421-486LF DPxDT 2:1 DIFFERENTIAL SWITCH Table 5. SKY13421-486LF Truth Table VCTL (Pin 12) Note: Insertion Loss Paths 1 RFCA to RF1A RFCB to RF1B 0 RFCA to RF2A RFCB to RF2B “1” = 70% of VDD to VDD. “0” = 30% of VDD. Any state other than described in this Table places the switch into an undefined state. An undefined state will not damage the device. VDD = 2 to 5 V and must be supplied before the VCTL signal is pushed high. Evaluation Board Description Package and Handling Information The SKY13421-486LF Evaluation Board is used to test the performance of the SKY13421-486LF DPxDT Switch. An Evaluation Board schematic diagram is provided in Figure 7. An assembly drawing for the Evaluation Board is shown in Figure 8. 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. Package Dimensions The PCB layout footprint for the SKY13421-486LF is provided in Figure 9. Typical case markings are shown in Figure 10. Package dimensions for the 14-pin QFN are shown in Figure 11, and tape and reel dimensions are provided in Figure 12. THE SKY13421-486LF 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. Figure 7. SKY13421-486LF Evaluation Board Schematic Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201655D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 24, 2013 5 DATA SHEET • SKY13421-486LF DPxDT 2:1 DIFFERENTIAL SWITCH Figure 8. SKY13421-486LF Evaluation Board Assembly Diagram Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 6 June 24, 2013 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201655D DATA SHEET • SKY13421-486LF DPxDT 2:1 DIFFERENTIAL SWITCH Figure 9. SKY13421-486LF PCB Layout Footprint (Top View) Figure 10. Typical Case Markings (Top View) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201655D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 24, 2013 7 DATA SHEET • SKY13421-486LF DPxDT 2:1 DIFFERENTIAL SWITCH Figure 11. SKY13421-486LF 14-Pin QFN Package Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 8 June 24, 2013 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201655D DATA SHEET • SKY13421-486LF DPxDT 2:1 DIFFERENTIAL SWITCH Figure 12. SKY13421-486LF Tape and Reel Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201655D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 24, 2013 9 DATA SHEET • SKY13421-486LF DPxDT 2:1 DIFFERENTIAL SWITCH Ordering Information Model Name SKY13421-486LF 0.1-3.0 GHz DPxDT 2:1 Differential Switch Manufacturing Part Number SKY13421-486LF Evaluation Board Part Number SKY13421-486LF-EVB Copyright © 2011, 2013 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 Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 10 June 24, 2013 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201655D DATA SHEET • SKY13421-486LF DPxDT 2:1 DIFFERENTIAL SWITCH 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 201655D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 24, 2013 11