RFX8425 Advanced Data Sheet 2.4GHZ CMOS WLAN / BT DUAL-MODE RFEIC WITH PA, LNA & SP3T ANT NC GND NC 16 15 14 13 DESCRIPTION DET 1 12 GND VMODE 2 11 NC NC 3 10 VDD VDD 4 9 LNA_EN 5 6 7 8 TX PA_EN GND RX RFX8425 is a pure CMOS-based, single-chip/single-die RFeIC (RF Front-end Integrated Circuit) that incorporates all key RF functionality needed for implementing high-performance RF front-end for WLAN IEEE 802.11b/g/n and OFDM/256QAM operation in the 2.4GHz band. The RFX8425 architecture integrates a high-efficiency high-linearity power amplifier (PA) with harmonic filter, a directional coupler based power detector, a low noise amplifier (LNA), an SP3T switch for Bluetooth antenna sharing, and an additional SPDT switch for selection between LNA and Bypass in Receive mode. All the impedance matching components and DC-block capacitors are also integrated to minimize the PCB footprint for system implementation. RFX8425 is assembled in an ultra-compact, low-profile 2.3x2.3x0.45mm 16L QFN package. It has simple and low-voltage CMOS control logic, and requires minimal external components. Designed to work in the 3.03.6V voltage range, the RFX8425 is ideal RF front-end solution for implementing 2.4GHz WLAN/BT in PC clients, tablets, and many other mobile platforms including smartphones that have a PMIC available to provide the required supply voltage for the RF front-end. FEATURES APPLICATIONS Combines 802.11b/g/n/ac and Bluetooth applications High linearity PA for 802.11 b/g/n/ac WLAN Low Noise Figure WLAN Receive LNA with Bypass for Near Range Operation Built in directional coupler based output power detector ESD Protection Circuitry on All Ports DC decoupled RF Ports and VDD / RF Isolation 2.3x2.3x0.45mm Small Outline 16L QFN Package with Exposed Ground Pad Smartphones, Feature Phones and MIDs with WLAN/Bluetooth WLAN/Bluetooth Platforms Requiring Shared Antenna Laptop / Netbook / Smartbook with Embedded WiFi & Bluetooth Portable Platforms with Integrated 802.11b/g/n and Bluetooth RoHS and REACH Compliant 1 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com RFX8425 Advanced Data Sheet PACKAGE PIN OUT AND PIN DESCRIPTION DET VMODE ANT NC GND NC 16 15 14 13 1 17 GND 2 12 GND 11 NC NC 3 10 VDD VDD 4 9 5 6 7 8 TX PA_EN GND RX LNA_EN (Top “See-Through” View) Pin Number Pin Name Description 1 DET 2 VMODE 4, 10 VDD 5 TX 6 PA_EN 8 RX 9 LNA_EN 3, 11, 13, 15 NC 7, 12, 14, 17 GND Ground – Must be Connected to Ground in the Application Circuit 16 ANT RF Signal Port to/from the Antenna: DC Shorted to GND PA Power Detector Output Voltage CMOS Logic Control Used for PA Mode Control in Rome Platform; Unused for Rhino Platform. DC Voltage Supply WLAN TX Signal Port from the Transceiver; DC Shorted to GND CMOS Logic Control to Enable WLAN Transmit WLAN RX Signal Port to the Transceiver/BT Port; DC Shorted to GND CMOS Logic Control to Enable LNA Not Connected Internally. Can be Grounded or Left Open 2 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com RFX8425 Advanced Data Sheet ABSOLUTE MAXIMUM RATINGS Unit Min. Max. Conditions DC VDD Voltage Supply V -0.3 4 All VDD Pins DC Control Pin Voltage V -0.3 3.6 All Control Pins DC current consumption mA 350 PA_EN = High TX RF Input Power dBm +10 ANT RF Input Power dBm +20 Parameters Junction Temperature o C Operating Ambient Temperature o C -20 +85 Storage Ambient Temperature o C -40 +150 Bypass Mode 150 Appropriate care required according to JEDEC Standards Note: Sustained operation at or above the Absolute Maximum Ratings for any single or combinations of the above parameters may result in permanent damage to the device and is not recommended. All Maximum RF Input Power Ratings assume 50-Ohm terminal impedance. NOMINAL OPERATING CONDITIONS Parameters Unit Min Typ Max Conditions VDD Voltage Supply (Note 1) V 3.0 3.3 3.6 All VDD Pins RF Port Impedance Control Voltage “High” (Note 2) V 1.2 3.6 Control Voltage “Low” V 0 0.4 Control Pin Current A 1 Shutdown Current A 6 PA Turn On/Off Time µs 0.4 LNA Turn On/Off Time µs 0.4 50 jc (Note 3) o C/W 29 ja o C/W 45 Single-Ended PA_EN = Low, LNA_EN = Low Note 1: For normal operation of the RFX8425, VDD must be continuously applied to all VDD supply pins. Note 2: If control voltage can exceed 2.0V, a 1KΩ – 10KΩ series resistor is recommended for the application circuit on each control line. Note 3: Thermal measurements were performed on an RFaxis test EVB under typical use conditions. Please contact RFaxis for details regarding the test conditions and the configuration of the thermal vias on the EVB. Refer to “PCB Land Pattern” for recommended thermal vias. 3 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com RFX8425 Advanced Data Sheet TRANSMIT PATH CHARACTERISTICS (VDD=3.3V, Ta=+25o C) Parameters Unit Min Typ Max Conditions Operating Frequency GHz 2.4 Linear Output Power for 802.11ac dBm +18 Dynamic EVM < -35dB for MCS9/VHT40 Linear Output Power for 802.11n dBm +18.5 Dynamic EVM < -32dB for MCS7/HT20 Linear Output Power for 802.11g dBm 19 Dynamic EVM < -32dB for 64QAM/54Mbps Linear Output Power for 802.11b dBm 22 For 802.11b 1Mbps CCK Mask Compliance with 1.5dB Margin Total Supply Current for 802.11ac mA 140 For Pout = +18dBm, MCS9/VHT40 TX Small Signal Gain dB 26 Second Harmonics dBm/MHz -8 POUT = +22dBm, 11b 1Mbps CCK Third Harmonics dBm/MHz -27 POUT = +22dBm, 11b 1Mbps CCK Power Detector Voltage mV 250 - 1000 Measured with 10kΩ load, POUT = +5 to +20dBm Input Return Loss dB -12 Output Return dB -6 2.5 RECEIVE PATH CHARACTERISTICS (VDD=3.3V, Ta=+25o C) Parameters Min Operating Frequency Typ 2.4 Max Unit 2.5 GHz Small-Signal Gain (High Gain Mode) 16 dB Noise Figure 2.6 dB LNA Quiescent Current 12 mA IIP3 +3.0 dBm Insertion Loss (Bypass Mode) 1.5 dB Conditions TRUTH TABLE PA_EN LNA_EN VMODE Mode of Operation 0 0 X Bypass / Sleep Mode 1 0 0 High Linearity Transmit Mode 0 1 X Receive Mode with LNA ON 1 0 1 Power Save Transmit Mode 1 1 X Power Save Transmit Mode Note: “1” denotes high state (> 1.2V), “0” denotes Low state (< 0.4V), “X” denotes either state (don’t care) 1KΩ – 10KΩ series resistor may be required for each control line 4 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com RFX8425 Advanced Data Sheet PACKAGE DIMENSIONS PCB LAND PATTERN PACKAGE MARKING (With Recommended Thermal Vias) 0.2mm 0.4mm 0.15mm Pin 1 Mark 0.4mm 1.4mm 1.4mm 0.2mm drill (x9) 2.6mm 8425 First Line: Part Number LLLL Second Line: Lot Number RFaxis Internal Tracking Number 0.475mm 2.3mm 5 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com