RFX2401C

DATA SHEET RFX2401C: 2.4 GHz ZigBee®/ISM Front-End Module Applications  ZigBee extended range devices CTX CRX  ZigBee smart power  Wireless sound and audio systems Logic Control  Home and industrial automation  Wireless sensor networks PA  Custom 2.4 GHz radio systems TXRX ANT Features LNA  2.4 GHz ZigBee high-power single-chip, single-die RF front-end IC  Single-ended 50 Ω input and output ports 204359-001 Figure 1. RFX2401C Block Diagram  Integrated PA with up to +22 dBm output power  Integrated LNA with 2.5 dB noise figure  Transmit/receive switch circuitry Description  High transmit signal linearity meeting standards for OQPSK modulation The RFX2401C is a fully integrated front-end module that incorporates all the RF functionality needed for IEEE 802.15.4/ZigBee, wireless sensor network, and any other wireless systems in the 2.4 GHz ISM band. The RFX2401C architecture integrates the PA, LNA, transmit and receive switching circuitry, and the associated matching network, all in a single package.  Low voltage (1.2 V) CMOS control logic  ESD protection circuitry on all ports  DC decoupled RF ports  Full on-chip matching and decoupling circuitry  Market proven CMOS technology  Small QFN, 16-pin (3 x 3 x 0.55 mm) package with exposed ground pad (MSL1, 260 C per JEDEC J-STD-020) Skyworks Green™ products are compliant with all applicable legislation and are halogen-free. For additional information, refer to Skyworks Definition of Green™, document number SQ04-0074. Typical high-power applications include home and industrial automation, smart power, and RF4CE among others. Combining superior performance, high sensitivity and efficiency, low noise, small form factor, and low cost, the RFX2401C is the perfect solution for applications requiring extended range and bandwidth. RFX2401C has simple and low-voltage CMOS control logic, and a wide operating supply voltage range. The device is provided in a compact, 16-pin 3 x 3 mm Quad Flat No-Lead (QFN) package. 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 204359B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 16, 2017 1 DATA SHEET • RFX2401C: 2.4 GHz ZIGBEE/ISM FRONT-END MODULE VDD 16 N/C 15 VDD 14 DNC 13 N/C 1 12 N/C GND 2 11 GND 17 GND GND 3 10 ANT TXRX 4 9 GND 5 6 TXEN RXEN 7 N/C 8 GND 204359-002 Figure 2. RFX2401C Pinout (Top View) Table 1. RFX2401C Signal Descriptions Pin Name Description Pin Name Description 1 N/C Not connected internally 9 GND Ground 2 GND Ground 10 ANT Connect to 50 Ω antenna (DC shorted to GND) 3 GND Ground 11 GND Ground 4 TXRX RF signal to/from the transceiver (DC shorted to GND) 12 N/C Not connected internally 5 TXEN CMOS input to control TX enable 13 DNC Do not connect 6 RXEN CMOS input to control RX enable 14 VDD Alternate supply pin, internally connected to pin 16 7 N/C Not connected internally 15 N/C Not connected internally 8 GND Ground 16 VDD Voltage supply connection Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 2 June 16, 2017 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 204359B DATA SHEET • RFX2401C: 2.4 GHz ZIGBEE/ISM FRONT-END MODULE Electrical and Mechanical Specifications The absolute maximum ratings of the RFX2401C are provided in Table 2. The recommended operating conditions are specified in Table 3. The electrical specifications are provided in Tables 4 and 5. The state of the RFX2401C is determined by the logic provided in Table 6. Table 2. RFX2401C Absolute Maximum Ratings1 Parameter Conditions Minimum Maximum Units 0 4.0 V DC VDD voltage supply DC control pin voltage Through 1 kΩ resistor 3.6 V DC VDD current consumption Through VDD pins when TX is “ON” 0 350 mA 1 μA TX RF input power All operating modes +5 dBm ANT RF input power When RX is “ON” +5 dBm 150 °C DC control pin current consumption Junction temperature Storage ambient temperature No RF and DC voltages applied -50 +150 o 3250 V C Electrostatic discharge: Human Body Model (HBM) 1 Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other parameters set at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device. All maximum RF input power ratings assume 50 Ω terminal impedance. ESD HANDLING: Although this device is designed to be as robust as possible, electrostatic discharge (ESD) can damage this device. This device must be protected at all times from ESD when handling or transporting. Static charges may easily produce potentials of several kilovolts on the human body or equipment, which can discharge without detection. Industry-standard ESD handling precautions should be used at all times. Table 3. RFX2401C Recommended Operating Conditions1 Parameter Conditions Min Typ Max Units 3.3 3.6 V DC VDD voltage supply All VDD pins 2.0 Control voltage “high” Through 1 kΩ resistor 1.2 VDD V 0 0.3 V -40 +125 Control voltage “low” Operating ambient temperature ja Note 2 35 o o C C/W 1 During production test, devices will be tested at 5 V. 2 For operation above +85 °C, use the  ja as guidance for system design to assure the junction temperature will not exceed the maximum of +150 °C. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 204359B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 16, 2017 3 DATA SHEET • RFX2401C: 2.4 GHz ZIGBEE/ISM FRONT-END MODULE Table 4. RFX2401C Electrical Specifications1 (VDD = 3.3 V, All Unused Ports Terminated with 50 Ω, TA = 25 °C, Unless Otherwise Noted) Parameter Frequency range Symbol Test Condition f Min Typ 2.4 Max Units 2.525 GHz Transmit Mode Saturated output power +22 Small-signal gain 21.5 25 dBm 26.5 dB Second harmonic POUT = +20 dBm, IEEE 802.15.4 OQPSK modulation signal –10 dBm/MHz Third harmonic POUT = +20 dBm, IEEE 802.15.4 OQPSK modulation signal –20 dBm/MHz Input return loss –10 dB Output return loss –6 dB Input / output impedance single-ended 50 Ω TX quiescent current No RF applied 17 mA TX high-power current POUT = +20 dBm 90 mA Load VSWR for stability (POUT = +20 dBm) All non-harmonically related spurs less than –43 dBm/MHz 6:1 N/A Load VSWR for ruggedness (POUT = +20 dBm) No damage 10:1 N/A Receive Mode Gain 12 dB Noise figure 2.5 dB Input return loss –10 dB Output return loss –12 dB Rf port impedance 50 Ω Rx quiescent current No RF applied 8 mA Input p1db At ANT pin –8 dBm 1 Performance is guaranteed only under the conditions listed in this table. Table 5. RFX2401C Standby Mode Technical Parameters Parameter Symbol Test Condition Min Typ DC shutdown current Max 1 TXRX-ANT insertion loss (S21) μA Pin < -20 dBm –50 –50 dB From TXRX port –1.5 dB Transmit-receive switching time 800 nsec Shutdown and “ON” State switching time 800 nsec ANT-TXRX insertion loss (S21) Return loss (S11) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 4 Units June 16, 2017 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 204359B dB DATA SHEET • RFX2401C: 2.4 GHz ZIGBEE/ISM FRONT-END MODULE Table 6. RFX2401C Control Logic1 Mode TX active TXEN RXEN 1 x RX active 0 1 Shutdown 0 0 1 “1” denotes high voltage state (> 1.2 V) “0” denotes low voltage stage (< 0.3 V) at control pins “X” denotes do not care: either “1” or “0” can be applied Application Schematic Board Description A suggested RFX2401C FEM application schematic diagram is shown in Figure 3. A schematic of the Evaluation Board is shown in Figure 4. Circuit Design Considerations The following design considerations are general in nature and must be followed regardless of final use or configuration:  Paths to ground should be made as short as possible.  If the transceiver TXRX port has DC present, use a capacitor to block this voltage from reaching the RFX2401C.  The ground pad of the RFX2401C has special electrical and thermal grounding requirements. This pad is the main thermal conduit for heat dissipation. Because the circuit board acts as the heat sink, it must shunt as much heat as possible from the device.  Locate the bypass capacitors as close as possible to the ground pad. Use two ground vias.  The VDD (pin 14) is an optional VDD pin, internally connected to pin 16.  The N/C pins 1, 7, 12, and 15 may be left open or connected to GND.  If the antenna circuits have DC present, use a capacitor to block this voltage from reaching the RFX2401C. NOTE: A poor connection between the ground pad and ground increases junction temperature (TJ), which reduces the life of the device.. Multiple vias to the grounding layer are required.Use thermal vias to assure efficient heat dissipation. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 204359B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 16, 2017 5 DATA SHEET • RFX2401C: 2.4 GHz ZIGBEE/ISM FRONT-END MODULE 4 3 2 1 J1 Harmonic Filtering Performance is sensitive to PCB parasitics. Therefore, custom PCB layout should emulate the reference PCB layout attached to this design as closely as possible. C2 220 pF C1 1 uF C3 is always required to filter the 5th harmonic. It must be located as close as possible to ANT pin. 13 ANT L1 2.4 nH 9 C3 0.3 pF C4 1.5 pF L2 2.4 nH C5 1.5 pF C6 1.5 pF C7 1.5 pF 4 2 11 10 J3 SMA 1 8 N/C GND GND RXEN TXRX 12 5 14 15 N/C VDD DNC GND GND 5 All inductors and capacitors must be populated. Use ceramic multi-layer inductors for effective filtering. (Murata LPQ series, SEMCO, Johanson/ACX) Depending on layout, all inductor and capacitor values may require minor value tweaks for optimum impedance matching. 3 GND 7 4 N/C U1 RFX2401C 2 4 1 3 N/C TXEN J2 SMA 3 5 2 PAD 6 1 VDD 16 Option 1: Discrete LC Filter 17 FL1 1 2 3 IN GND4 OUT GND2 GND3 2.45 GHz LP 6 5 4 Option 2: Ceramic Filter FL1 represents the option to replace the discrete pi filters by a ceramic low pass filter solution as follows: Populate FL1. (ACX LF1608-B2R4KCBB or Johanson 2450LP14A100T) Populate L2 with 0 Ohm resistor (=jumpers). C3 is still required to filter the 5th harmonic. Do Not Populate C4, C5, C6, and C7. Do Not Populate L1. 1 3 4 2 R2 10 kΩ R1 10 kΩ GND1 204359-003 J4 Figure 3. RFX2401C Application Schematic Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 6 June 16, 2017 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 204359B DATA SHEET • RFX2401C: 2.4 GHz ZIGBEE/ISM FRONT-END MODULE 4 3 VDD 2 HDR4 1 J1 Harmonic Filtering C2 220 pF 13 DNC1 ANT GND3 4 J3 SMA 1 C3 DNI C4 DNI C5 DNI C6 DNI C7 DNI 8 TXEN 5 9 L2 0Ω GND5 GND6 GND4 TXRX L1 0Ω 11 10 2 GND7 RFX2401C 5 GND2 12 3 DNC2 14 15 GND9 VDD GND8 RXEN 4 GND1 2 DNI 1 R1 10 kΩ R2 10 kΩ 2 3 GND1 IN GND4 OUT GND2 GND3 6 5 4 2.45 GHz LP 1 3 5 7 4 1 3 C3 is always required to filter the 5th harmonic. It must be located as close as possible to ANT pin. J5 HEADER 4X2 2 4 6 8 J2 SMA 3 5 2 7 1 GND10 6 17 16 U1 Performance is sensitive to PCB parasitics. Therefore custom PCB layout should emulate the reference PCB layout attached to this design as closely as possible. C1 1 uF 204359-004 VLOGIC Figure 4. RFX2401C Evaluation Board Schematic Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 204359B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 16, 2017 7 DATA SHEET • RFX2401C: 2.4 GHz ZIGBEE/ISM FRONT-END MODULE Package Dimensions Package and Handling Information The PCB layout footprint for the RFX2401C is shown in Figure 5. Typical part markings are shown in Figure 6. Package dimensions are shown in Figure 7, and tape and reel dimensions are provided in Figure 8. Instructions on the shipping container label regarding exposure to moisture after the container seal is broken must be followed. Otherwise, problems related to moisture absorption may occur when the part is subjected to high temperature during solder assembly. The RFX2401C is rated to Moisture Sensitivity Level 1 (MSL1) at 260 C. It can be used for lead or lead-free soldering. For additional information, refer to the Skyworks Application Note, Solder Reflow Information, document number 200164. Care must be taken when attaching this product, whether it is done manually or in a production solder reflow environment. Production quantities of this product are shipped in a standard tape and reel format. 0.25 mm 0.5 mm 0.25 mm 0.65 mm 1.7 mm x 1.7 mm 3.5 mm 3.0 mm 204359-004 Figure 5. RFX2401C PCB Layout Footprint (Top View) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 8 June 16, 2017 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 204359B DATA SHEET • RFX2401C: 2.4 GHz ZIGBEE/ISM FRONT-END MODULE Pin 1 Indicator 2401C LLLL.L UHYYWW Skyworks Part Number Lot Code Date Code 204359-006 Figure 6. Typical Part Markings (Top View) 204359-007 Figure 7. RFX2401C Package Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 204359B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 16, 2017 9 DATA SHEET • RFX2401C: 2.4 GHz ZIGBEE/ISM FRONT-END MODULE 4.00 ±0.10 2.00 ±0.05 Ø1.50 +0.10 –0.00 3.30 ±0.10 5.50 ±0.05 1.75 ±0.10 12.00 ±0.30 0.30 ±0.05 Pin 1 8.00 ±0.10 Ø1.50 Min 0.75 ±0.10 3.30 ±0.10 All measurements are in millimeters. 204359-008 Figure 8. RFX2401C Tape and Reel Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 10 June 16, 2017 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 204359B DATA SHEET • RFX2401C: 2.4 GHz ZIGBEE/ISM FRONT-END MODULE Ordering Information Model Name RFX2401C: 2.4 GHz ZigBee/ISM Front-End Module Manufacturing Part Number RFX2401C Evaluation Board Part Number RFX2401C-EK1 Copyright © 2016-2017 Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, are provided by Skyworks as a service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials or the information contained herein. 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