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 1

DATA SHEET

RFX2411N: 2.4 GHz Transmit / Receive Booster with Diversity

Switch for IoT / BLE / Zigbee

Applications

 Extended range devices

 Zigbee, ANT+, Thread, Bluetooth, BLE, RF4CE

 Smart energy / metering / lighting / remote control

 Home and industrial automation

 Custom 2.4 GHz radio systems

 Mobile and battery systems

Features

 Single-chip, single-die CMOS IC

 Transmit/receive switch circuitry

 Antenna diversity switch circuitry

 TX power amplifier or bypass

 RX low-noise amplifier or bypass

 Linearity in compliance with standards for OQPSK, DQPSK,

and 8DPSK modulations

 Integrated power detector for transmit power monitor and

control

 CMOS control logic

 ESD protection circuitry on all pins

 RF ports do not carry DC voltage

 Internal RF decoupling on VDD bias pins

 Very low DC power consumption

 Operation up to 125 °C ambient temperature

 Full on-chip matching and decoupling circuitry

 Minimal external components required

 50 Ω input/output matching

 Market-proven CMOS technology

 Small QFN (20-lead,3.0 x 3.0 x 0.55 mm) package with

exposed ground pad

Figure 1. RFX2411N Block Diagram

Description

The RFX2411N is a fully integrated, single-chip, single-die

RFeIC

(RF front-end integrated circuit) that incorporates all the

RF functionality needed for wireless Zigbee / smart energy

applications. The RFX2411N architecture integrates TX / RX and

diversity switching circuitry with PA, LNA, and the associated

matching networks with harmonic reduction in a CMOS

single-chip device. The device also includes a bypass mode to

provide maximum flexibility for system implementations.

The RFX2411N is designed for the 2.4 GHz ISM band and

supports Bluetooth / BT EDR / BLE, 802.15.4, Zigbee, ANT, and

Thread. The RFX2411N is the perfect solution for applications

requiring extended range and bandwidth, such as home and

industrial automation, smart energy/smart metering, and

RF4CE. RFX2411N interfaces seamlessly with low-voltage

CMOS control logic, requires minimal external components, and

provides an integrated PA power detector circuit. The superior

performance, high sensitivity, high efficiency, low noise, small

form factor, low power consumption and low cost make the

RFX2411N an ideal and application-friendly solution

DATA SHEET • RFX2411N: 2.4 GHz TX / RX BOOSTER WITH DIVERSITY SWITCH FOR IOT / BLE / ZIGBEE

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

204380-002

GND

N/C

DNC

N/C

TX/RX

6 78910

1617181920

GND

TXEN RXEN PDET MODE SWANT

GND

IND

ANTA

ANTB

VDD DNCDNCVDD GND

Figure 2. RFX2411N Pinout

(Top View)

Table 1. RFX2411N Signal Descriptions

Pin Name Description Pin Name Description

1, 11, 13,

19, 21

GND

Ground (must be connected to ground in the

application circuit)

10 SWant CMOS input to select antenna for diversity

2, 4 N/C No internal connection 12 ANTB

RF signal from the PA or RF signal applied to the LNA;

DC shorted to ground

5 TXRX RF signal to/from the transceiver: DC shorted to GND 14 ANTA

RF signal from the PA or RF signal applied to the LNA;

DC shorted to ground

6 TXEN CMOS input to control TX enable 15 IND Inductor to GND

7 RXEN CMOS input to control RX enable 3, 16, 17 DNC Reserved (do not connect in the application circuit)

8 PDET Analog voltage proportional to the PA power output 18, 20 VDD Voltage supply connection

9 MODE CMOS input to control mode of operation