DATA SHEET SKY12241-492LF: 1.8 to 3.0 GHz 50 W Compact High-Power SPDT Switch with Integrated Driver TX TXD VCC Applications VCTRL TDD 2G/3G/4G LTE systems High-power switch for micro-cell and macro-cell base stations Active antenna array VUREC VREC ANT Features Driver FB Compact, integrated high-power switch with driver circuit COMP 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: 0.29/0.52 dB 2.6 GHz RX RXD BIAS RXD High TX to RX isolation: 51 dB 2.6 GHz Figure 1. SKY12241-492LF Block Diagram Low DC power consumption: <100 mA in TX or RX mode Small QFN (20-pin, 5 x 5 mm) Pb-free package Description (MSL3, 260 C per JEDEC J-STD-020) The SKY12241-492LF is a compact, integrated high-power single-pole, double-throw (SPDT) switch with driver circuit for TM Skyworks Green products are compliant with TD-LTE applications. The part operates with a single +5 V supply all applicable legislation and are halogen-free. and switches with a single control voltage (0 to 3 V). For additional information, refer to Skyworks This device features low TX and RX insertion loss, high isolation TM Denition of Green , document number with low DC power consumption and requires minimal external SQ040074. components, enabling a smaller PCB footprint. The device is provided in a 5 x 5 mm, 20-pin Quad Flat No-Lead Table 1. Pin-to-Pin Compatible High-Power SPDT Switches (QFN) package. A functional block diagram is shown in Figure 1. The pin configuration and package are shown in Figure 2. Table 1 Part Number Power Handling list the part numbers of pin-compatible parts belonging to this SKY12241-492LF 50 W (CW) family of high-power SPDT switches. Signal pin assignments and SKY12242-492LF 100 W (CW) functional pin descriptions are provided in Table 2. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 203371I Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice June 28, 2018 1 203371C-001DATA SHEET SKY12241-492LF: 50 W COMPACT HIGH-POWER SPDT SWITCH WITH INTEGRATED DRIVER 20 19 18 17 16 1 GND 15 VUREC ANT 2 14 VREC 3 21 GND ANT FB 13 GND 4 12 COMP GND 5 11 GND 6 78 9 10 203371C-002 Figure 2. SKY12241-492LF Pinout (Top View) Table 2. SKY12241-492LF Signal Pin Descriptions Pin Name Function Description 1, 4, 5, 7, 11, 19 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. 9 RXD BIAS O Driver output voltage for switch RX BIAS connection. 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. 20 TX I Transmit RF input port and DC bias input port. 21 GND Ground Ground. Refer to Figure 13 for optimum thermal performance. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 June 28, 2018 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 203371I TX RX GND GND TXD RX BIAS RXD BIAS VCTRL RXD VCC