DATA SHEET SKY12245-492LF: 0.3 to 5.0 GHz, 100 W Compact High-Power SPDT Switch with Integrated Driver Applications TDD 3G/4G/5G systems High-power switch for micro-cell base stations and macro-cell base stations Active antenna array Features Compact, integrated high-power switch with driver circuit Small PCB footprint with minimal external components Requires only a single +5 V DC supply, and a 0 to 3 V logic control Low TX/RX insertion loss High TX to RX isolation Low DC power consumption: <130 mA in TX or RX mode Small QFN (20-pin, 5 5 mm) Pb-free package (MSL3, 260 C per JEDEC J-STD-020) Figure 1. SKY12245-492LF Block Diagram Description The SKY12245-492LF is a compact, integrated high-power single-pole, double-throw (SPDT) PIN diode switch with driver circuit for TDD-LTE and similar applications. The part operates with a single +5 V supply and switches with a single control voltage (0 to 3 V). It can be tuned to specific RF bands within the range of 0.3 to 5.0 GHz by modifying select external SMT components. This device features low TX and RX insertion loss, high isolation with low DC power consumption and requires minimal external components, enabling a smaller PCB footprint. The device is provided in a 5 5 mm, 20-pin Quad Flat No-Lead (QFN) package. 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 sales skyworksinc.com www.skyworksinc.com 204135N Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice February 11, 2020 1 DATA SHEET SKY12245-492LF: 100 W COMPACT HIGH-POWER SPDT SWITCH WITH INTEGRATED DRIVER Figure 2. SKY12245-492LF Pinout (Top View) Table 1. SKY12245-492LF Signal Pin Descriptions Pin Name Function Description 1, 4, 5, 7, 9, 11 GND Ground Ground. Must be connected to ground using lowest possible impedance. 2, 3 ANT I/O Antenna RF port and DC bias input port. RF input line must be connected to both pins. 6 RX O Receive RF output port and DC bias input port. 8 RX BIAS I DC bias input port. 10 RXD O Driver output voltage for switch RX port. 12 COMP O Compensation pin of the internal boost converter. 13 FB O Feedback pin of the internal boost converter. 14 VREC I Rectified output voltage node of the internal boost converter. 15 VUREC O Unrectified output voltage node of the internal boost converter. 16 VCC I Input voltage for driver VCC. 17 VCTRL I Switch control (0/3 V) (0 V for Receive mode, 3 V for Transmit mode). 18 TXD O Driver output pin for TX port DC bias connection. 19 TX BIAS I DC bias input port. 20 TX I Transmit RF input port and DC bias input port. 21 GND Ground Ground. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 February 11, 2020 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 204135N