DATA SHEET SE2431L: 2.4 GHz Front-End Module Applications Smart meters In-home appliances Logic Control Smart thermostats PA Features ANT1 Integrated: TR PA with up to +24 dBm output power LNA with programmable bypass Antenna switching with Tx and Rx diversity function ANT2 Suitable for ZigBee , Bluetooth Low Energy, and Bluetooth 1.0 LNA Typical low NF: 2 dB 202410-001 Operating temperature range: 40 C to +125 C Figure 1. SE2431L Block Diagram Single-ended 50 Tx/Rx RF interface Fast switch on/off time <1 s Description Supply operation: 2.0 V to 3.6 V The SE2431L is a high-performance, fully integrated RF front-end Sleep mode current: 0.05 A typical module (FEM), suitable for ZigBee, Bluetooth Low Energy, and Bluetooth 1.0 applications. Small QFN (24-pin, 3.0 mm x 4.0 mm x 0.9 mm Nickel- Palladium-gold NiPdAu plated) package The SE2431L is designed for ease of use and maximum flexibility, (MSL1, 260C per JEDEC J-STD-020) with fully matched 50 input and output, integrated inter-stage matching and harmonic filter, and digital controls that are compatible with 1.6 V to 3.6 V Complementary Metal Oxide Semiconductor (CMOS) levels. TM Skyworks Green products are compliant with The RF blocks operate over a wide supply voltage range from all applicable legislation and are halogen-free. 2.0 V to 3.6 V, which allows the SE2431L to be used in battery- For additional information, refer to Skyworks powered applications over a wide spectrum of the battery TM Denition of Green , document number discharge curve. SQ040074. 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 202410K Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice June 13, 2017 1 CPS CTX CSD ANT SELDATA SHEET SE2431L: 2.4 GHz FRONT-END MODULE B2 1 19 VCC2 B1 2 18 GND N/C 3 17 N/C N/C 4 16 ANT SEL N/C ANT1 5 15 T/R 14 GND 6 N/C 7 13 ANT2 Y0587 Figure 2. SE2431L Pinout (Top View) Table 1. SE2431L Signal Descriptions Pin Name Description Pin Name Description 1 B2 Connect through the bias resistor to pin 23 13 ANT2 Connect to 50 antenna 2 B1 Connect through the bias resistor to pin 23 14 GND Connect to PCB ground 3 Not connected internally to the device 15 Connect to 50 antenna N/C ANT1 4 Not connected internally to the device 16 ANT SEL Connect to the GPIO signal to control the antenna switch (see Table 8) N/C 5 N/C Not connected internally to the device 17 N/C Not connected internally to the device 6 Transmit/receive port from/to transceiver, T/R 18 GND Connect to PCB ground single-ended 50 7 N/C Not connected internally to the device 19 VCC2 Connect to positive supply 8 Not connected internally to the device 20 N/C CSD Connect to the GPIO signal to control the SE2431L modes (see Table 8) 9 GND Connect to PCB ground 21 CPS Connect to the GPIO signal to control the SE2431L modes (see Table 8) 10 Connect to PCB ground 22 GND VCC1 Connect to positive supply 11 Connect to PCB ground 23 BOUT Connect to pins 1 and 2 through the bias resistors GND 12 GND Connect to PCB ground 24 CTX Connect to the GPIO signal to control the SE2431L modes (see Table 8) Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 June 13, 2017 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 202410K 8 24 CTX N/C 9 23 BOUT GND 10 22 VCC1 GND 11 21 CPS GND 20 12 CSD GND