DATA SHEET RFX8050: CMOS 5 GHz WLAN 802.11ac RFeIC with PA, LNA, and SPDT Applications 802.11a/n/ac ANT LEN RXEN Smartphones Tablets/MIDs Gaming Notebook/netbook/ultrabooks RX Mobile/portable devices Consumer electronics Other 5 GHz ISM platforms VDD MODE Features 5 GHz WLAN single-chip, single-die RF front-end IC 204381-001 DET TXEN TX High transmit signal linearity meeting standards for 802.11ac Figure 1. RFX8050 Block Diagram OFDM /MCS9 Modulation Separate TX and RX transceiver port and single antenna port Description 5 GHz power amplifier with low-pass harmonic filter The RFX8050 is a highly integrated, single-chip, single-die RFeIC Low-noise amplifier with bypass mode (RF Front-end Integrated Circuit) that incorporates key RF Transmit/receive switch circuitry functionality for IEEE 802.11a/n/ac WLAN system operating in the Integrated power detector for transmit power monitor and 4.9 to 5.85 GHz range. The RFX8050 architecture integrates a control high-efficiency high-linearity power amplifier (PA), a low noise amplifier (LNA) with bypass, the associated matching network, LO Low voltage (1.2 V) CMOS control logic rejection, and harmonic filters in a CMOS single-chip device. Low-current mode in TX for battery current savings The RFX8050 has simple and low-voltage CMOS control logic that ESD protection circuitry on all pins requires minimal external components. A directional DC decoupled RF ports coupler-based power detect circuit is integrated for accurate Internal RF Decoupling on All VDD Bias Pins monitoring of output power from the PA. Low noise figure for the receive chain The RFX8050 is an ultra-compact low-profile 2.5 x 2.5 x 0.45 mm High power capability for received signals in bypass mode 16-lead QFN package. With support to direct battery operation, Very low DC power consumption the RFX8050 is an ideal RF front-end solution for implementing 5 GHz WLAN in smartphones and other mobile platforms. Full on-chip matching circuitry Minimal external components required 50 input/output matching Skyworks Green products are compliant with Market-proven CMOS technology all applicable legislation and are halogen-free. Small QFN (16-lead, 2.5 x 2.5 x 0.45 mm) package with For additional information, refer to Skyworks exposed ground pad Denition of Green, document number SQ04-0074. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 204381B Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice December 21, 2018 1 1 2 3 4 DATA SHEET RFX8050: CMOS 5 GHz WLAN 802.11ac RFEIC WITH PA, LNA, AND SPDT LEN RXEN GND ANT 16 15 14 13 N/C 12 GND RX 11 N/C 17 GND N/C 10 N/C VDD 9 MODE 8 5 6 7 204381-002 DET TXEN GND TX Figure 2. RFX8050 Pinout (Top View) Table 1. RFX8050 Signal Descriptions Pin Name Description Pin Name Description 1, 3, 10, N/C No internal connection 9 MODE CMOS input to control high-linearity/low-current mode 11 RF output port from LNA or bypass (DC shorted to Antenna port RF signal from the PA or RF signal 2 RX 13 ANT ground) applied to the LNA (DC shorted to ground) 4 VDD DC supply voltage 15 RXEN CMOS input to control RX enable 5 DET Analog voltage proportional to the PA power output 16 LEN CMOS input to control LNA enable or bypass mode Ground (must be connected to ground in the 6 TXEN CMOS input to control TX enable 7, 12, 14 GND application circuit) RF input port from the transceiver (DC shorted to 8 TX ground) Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 December 21, 2018 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 204381B