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SKY66297-11 Datasheet(PDF) 7 Page - Skyworks Solutions Inc. |
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SKY66297-11 Datasheet(HTML) 7 Page - Skyworks Solutions Inc. |
7 / 14 page DATA SHEET • SKY66292-11: 2300 TO 2400 MHz HIGH EFFICIENCY 4 W POWER AMPLIFIER Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 203282E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • May 31, 2017 7 Frequency (MHz) -30.00 -25.00 -20.00 -15.00 -10.00 –40 °C +25 °C +85 °C 2300 2320 2340 2360 2380 2400 Figure 15. Input Return Loss vs Frequency Across Temperature (Small Signal, PIN = −20 dBm) Frequency (MHz) -18.00 -17.00 -16.00 -15.00 -14.00 -13.00 -12.00 -11.00 -10.00 2300 2320 2340 236023802400 –40 °C +25 °C +85 °C Figure 16. Output Return Loss vs Frequency Across Temperature (Small Signal, PIN = −20 dBm) Evaluation Board Description The SKY66292-11 Evaluation Board is used to test the performance of the SKY66292-11 PA. An Evaluation Board schematic is provided in Figure 17. Table 6 provides the Bill of Materials (BOM) list for Evaluation Board components. An assembly drawing for the Evaluation Board is shown in Figure 18. Layer details are shown in Figure 19. Layer details physical characteristics are noted in Figure 20. Circuit Design Considerations The following design considerations are general in nature and must be followed regardless of final use or configuration: Paths to ground should be made as short as possible. The ground pad of the SKY66292-11 has special electrical and thermal grounding requirements. This pad is the main thermal conduit for heat dissipation. Because the circuit board acts as the heat sink, it must shunt as much heat as possible from the device. Therefore, design the connection to the ground pad to dissipate the maximum wattage produced by the circuit board. Multiple vias to the grounding layer are required. NOTE: A poor connection between the ground pad and ground increases junction temperature (TJ), which reduces the life of the device. Evaluation Board Test Procedure Turn-On Sequence 1. Connect 50 test equipment or load to the input and output RF ports of the Evaluation Board. 2. Connect the DC ground. 3. Connect all VCCs and VBIAS lines to a +5 V supply. Connect PAEN to a 2.0 V supply. 4. Without applying RF, turn on the 5 V supply, then turn on the 2 V PAEN. 5. Apply RF signal data at –30 dBm and observe that the gain of the device complies with the values in Table 5. Begin measurements. Turn-Off Sequence 1. Turn off the RF input to the device. 2. Turn off PAEN (set to 0 V). 3. Turn off all VCCs and VBIAS. NOTE: It is important to adjust the VCC voltage sources so that +5 V is measured at the board. High collector currents drop the collector voltage significantly if long leads are used. Adjust the bias voltage to compensate. |
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