DATA SHEET RFX8422S: 2.4 GHz CMOS WLAN / Bluetooth RFeIC with PA, LNA with Bypass, and SP3T Switch Applications Smartphones, feature phones and MIDs with WLAN / Bluetooth WLAN / Bluetooth platforms requiring shared antenna Laptop / netbook / smartbook with embedded Wi-Fi and Bluetooth Portable platforms with integrated 802.11b/g/n and Bluetooth Features Combines 802.11b/g/n and Bluetooth applications High-linearity PA for 802.11 b/g/n WLAN Simultaneous WLAN and Bluetooth receive mode Low noise figure WLAN receive LNA with bypass for near Figure 1. RFX8422S Block Diagram range operation Supports direct battery operation Description Built in directional coupler based output power detector The RFX8422S is a fully integrated, single-chip, single-die ESD protection circuitry on all ports RFeIC (RF front-end integrated circuit) that incorporates all the DC decoupled RF ports and VDD / RF isolation RF functionality needed for dual-mode WLAN, Bluetooth operations including simultaneous WLAN and Bluetooth receive Small outline 16L QFN package (16-lead, 2.5 x 2.5 x 0.45 mm) package with exposed ground pad capability. The RFX8422S architecture integrates a high-efficiency high-linearity PA, a directional coupler and output power detector, impedance matching networks, harmonic filters, a LNA with Bypass and an SP3T antenna switch all in a single CMOS device. This RFeIC is designed to be used in combined 802.11b/g/n and Bluetooth applications operating in the 2.4 GHz band, and can be powered directly from the battery. Combining superior performance, ultra-low power consumption, small form factor, and low cost, RFX8422S is the perfect solution for mobile, handheld, and portable devices with integrated WLAN and Bluetooth. RFX8422S is assembled in the ultra-compact 2.5 x 2.5 x 0.45 mm 16L QFN package, and requires minimal external components and PCB footprint. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 204387B Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice February 21, 2020 1 DATA SHEET RFX8422S: 2.4 GHz CMOS WLAN / BLUETOOTH RFeIC WITH PA, LNA WITH BYPASS, AND SP3T SWITCH Figure 2. RFX8422S Pinout (Top View) Table 1. RFX8422S Signal Descriptions Pin Name Description Pin Name Description WLAN RX signal port to the transceiver: DC shorted to 1 DET PA power detector output 8 RXOUT GND CMOS logic control to enable LNA. Use to switch 2, 3, 12 NC Not connected internally (can be grounded or left open) 9 LEN between the LNA and bypass modes RF signal port from / to the Bluetooth transceiver: DC 4, 10 VDD DC voltage supply 11 BT shorted to GND WLAN TX signal port from the transceiver: DC shorted 5 TXIN 13 BTEN CMOS logic control to enable Bluetooth to GND 6 TXEN CMOS logic control to enable WLAN transmit 14 RXEN CMOS logic control to enable WLAN receive 7, 15, Paddle GND Ground (must be connected to ground) 16 ANT RF Signal Port to/from the antenna: DC Shorted to GND Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 204380B Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice February 21, 2020 2