RF6525 3.0V TO 4.2V, 2.4GHz FRONT END MODULE NC 16 10 VCC TXP 17 9 GND RXCT 18 8 ANT1 RXBN 19 7 GND RXBP 20 6 ANT2 ANT 1 2 LNA_MODE ZigBee(R) 802.15.4 Based Systems for Remote Monitoring and Control 2.4GHz ISM Band Applications Smart Meters for Energy Management VCC TXN Applications 11 3 4 5 RX_EN 12 TX_EN TX Output Power: 22dBm RX Gain: 11.5dB RX NF: 2.5dB Integrated RF Front End Module with TX/RX balun, PA, Filter, LNA with Bypass Mode and DP2T Switch. Dual Differential Transceiver Interface. 13 VCC 14 ANT_SEL Features VCC_BAIS 15 GND TXCT Package Style: QFN, 20-Pin, 3.5mmx3.5mmx0.5mm Functional Block Diagram Product Description The RF6525 integrates a complete solution in a single Front End Module (FEM) for ZigBee(R) applications in the 2.4GHz to 2.5GHz band. This FEM integrates the PA plus harmonic filter in the transmit path and the LNA with bypass mode in the receive side. It also integrates a diversity switch and provides balanced input and output signals for both the TX and RX paths respectively. The RF6525 FEM is ideal for ZigBee(R) systems operating with a minimum output power of 20dBm and high efficiency requirements. On the receive path, the RX Chain provides 11.5dB of typical gain with only 7mA of current and excellent NF of 2.5dB. This FEM meets or exceeds the system requirements for ZigBee(R) applications operating in the 2.4GHz to 2.5GHz band. The device is provided in a 3.5mm x 3.5mm x 0.5mm, 20-pin QFN package. Ordering Information RF6525SQ RF6525SR RF6525TR13 RF6525PCK-410 Standard 25 piece bag Standard 100 piece reel Standard 2500 piece reel Fully assembled evaluation board with 5 loose pieces Optimum Technology Matching(R) Applied GaAs HBT GaAs MESFET InGaP HBT SiGe BiCMOS Si BiCMOS SiGe HBT GaAs pHEMT Si CMOS Si BJT GaN HEMT BiFET HBT LDMOS RF MICRO DEVICES(R), RFMD(R), Optimum Technology Matching(R), Enabling Wireless ConnectivityTM, PowerStar(R), POLARISTM TOTAL RADIOTM and UltimateBlueTM are trademarks of RFMD, LLC. BLUETOOTH is a trademark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. (c)2006, RF Micro Devices, Inc. DS111110 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 1 of 11 RF6525 Absolute Maximum Ratings Parameter Rating Unit 5 V Operating Case Temperature -40 to +85 C Storage Temperature -40 to +150 C ESD Human Body Model RF Pins 1000 V ESD Human Body Model All Other Pins 500 V ESD Charge Device Model All Pins 500 V DC Supply Voltage Moisture Sensitivity Level RFMD Green: RoHS compliant per EU Directive 2002/95/EC, halogen free per IEC 61249-2-21, < 1000ppm each of antimony trioxide in polymeric materials and red phosphorus as a flame retardant, and <2% antimony in solder. MSL 2 +5 Maximum Input Power to PA and LNA (No Damage in High Gain Mode) Parameter Caution! ESD sensitive device. Exceeding any one or a combination of the Absolute Maximum Rating conditions may cause permanent damage to the device. Extended application of Absolute Maximum Rating conditions to the device may reduce device reliability. Specified typical performance or functional operation of the device under Absolute Maximum Rating conditions is not implied. The information in this publication is believed to be accurate and reliable. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents, or other rights of third parties, resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended application circuitry and specifications at any time without prior notice. Min. Specification Typ. dBm Max. Unit Specifications must be met across supply voltage, control voltage, and temperature ranges unless otherwise noted. Typical conditions: T=25C, VCC =3.6V, TX_EN=High Overall Operating Frequency Range Operating Voltage (VCC) Condition 2400 3.0 Leakage Current 2483 3.6 4.2 0.5 MHz V uA VCC =3.6V, RF=OFF, TX_EN=Low, RX_EN=Low. LNA_EN, ANT_SEL, and LNA Mode=Low. Transmit Parameters Frequency 2400 Input Return Loss -13 2483 MHz -9.6 dB Over all conditions for both Antenna 1 and Antenna 2 Amplitude Imbalance -1 1 dB Phase Imbalance -15 15 deg -9.6 dB dB At rated power and nominal conditions +1.5 dB Over temperature dB Over frequencies and voltage Output Return Loss -14 Gain 25 Gain Variation -1.5 Gain Flatness -1 Rated Output Power 20 28 +1 22 Over all conditions for both Antenna 1 and Antenna 2 dBm 19 dBm VCC =2.6V, VCC_Bias=3.0V Supply Current 200 230 mA PO =22dBm 802.15.4 OQPSK. Typical Conditions. Supply Current 175 205 mA PO =20dBm 802.15.4 OQPSK. Thermal Resistance 53 2nd Harmonic Level -45 -42 dBm/MHz Measured using standard 802.15.4 OQPSK modulation signal at POUT =20dBm over temperature, frequency, and voltage 3rd Harmonic Level -45 -42 dBm/MHz Measured using standard 802.15.4 OQPSK modulation signal at POUT =20dBm over temperature, frequency, and voltage VSWR Stability and Load Mismatch Susceptibility 4:1 VSWR No Damage 8:1 2 of 11 C/W VCC = 3.6V, POUT = 22dBm, TREF = 85C No spurs above -45dBm 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. DS111110 RF6525 Parameter Min. Specification Typ. Max. Unit Condition Transmit Parameters, cont. Gain Settling Time 1 Current Sourced through TXCT Pin Voltage Drop from TXCT Pin to TXP/TXN 2 uS 18.0 mA 0.1 V Receive Parameters (LNA Mode) Frequency Gain 2400 8 Noise Figure Current Input IP3 Gain Flatness 5 2483 MHz 11.5 14 dB From antenna to RX pin (entire RX path). (All conditions.) 2.5 3.5 dB From antenna to RX pin (entire RX path). 8 12 mA LNA + Switches 10 -0.7 Input Return Loss dBm 0.7 dB 8 dB 10 Output Return Loss At nominal conditions over frequency dB Amplitude Imbalance -1 1 dB Differential RX Port Phase Imbalance -15 15 deg On 180 degrees typical, differential RX Port 1 mA 0.1 V 2483 MHz Current Sourced through RXCT Pin Voltage Drop from RXCT Pin to RXP/RXN 0.05 ByPass Mode Frequency 2400 Insertion Loss 5 Noise Figure 5 dB Entire RX path Current 5 uA ANT1 IIP3 Gain Flatness uA 18 dBm 15 Output Return Loss dB 50 -0.1 Input Return Loss 7 9.5 0.1 dB 12 dB Entire RX path ANT2 Nominal over frequency 8 dB Amplitude Imbalance -1 1 dB Differential RX Port Phase Imbalance -15 15 deg On 180 degrees typical, differential RX Port 1 mA 0.1 V Current Sourced through RXCT Pin Voltage Drop from RXCT Pin to RXP/RXN 0.05 Antenna Switch RF-to-Control Isolation 50 dB Measured at any control pin while in TX or RX mode. RF-to-ANT Isolation 17 20 dB Measured from Antenna to RX port while in Transmit mode. Measured from Antenna to TX port while in Receive mode. RF-to-RF Isolation 18 20 dB Measured from TX port to RX port while in receive or transmit modes. Switch Control Logic = HIGH =VCC -0.3 =VCC V All Logic I/O's Switch Control Logic = LOW 0.0 0.2 V All Logic I/O's DS111110 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 3 of 11 RF6525 Switch Control Current. Logic HIGH 2 Switch Control Current. Logic LOW 0.1 Antenna Select Switch Speed 4 of 11 5 1 A All Logic I/O's A All Logic I/O's uS ANT1 or ANT2 path, TX or RX mode 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. DS111110 RF6525 Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 DS111110 Function LNA_MODE VCC ANT_SEL TX_EN RX_EN ANT2 GND ANT1 GND VCC NC VCC VCC_BIAS GND TXCT TXN TXP RXCT RXBN RXBP Description Bypass enable pin. See logic table for operation. Voltage Supply. An external 1uF capacitor might be needed for low frequency decoupling. Control pin for Antenna select. See logic table for operation. Enable voltage pin for the PA and Transmit switch. See logic table for operation. Enable voltage pin for the LNA and Receive switch. See logic table for operation This is the common port (antenna). It is matched to 50 and DC-block is provided internally. Ground. This is the common port (antenna). It is matched to 50 and DC-block is provided internally Ground. Voltage Supply. An external 1uF capacitor might be needed for low frequency decoupling No connect pin. Must be left floating. Voltage Supply. An external 1uF capacitor might be needed for low frequency decoupling Voltage Supply. An external 1 uF capacitor might be needed for low frequency decoupling Ground. Center tap for passing thru DC voltage to TXN and TXP pins that connect to the TXVR SoIC. 100 single-ended, 200 differential. 100 single-ended, 200 differential. Center tap for passing thru DC voltage to RXBN and RXBP pins that connect to the TXVR SoIC. 100 single-ended, 200 differential. 100 single-ended, 200 differential. 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 5 of 11 RF6525 Package Drawing 6 of 11 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. DS111110 RF6525 RF6525 Biasing Instructions TX Mode * With the RF source disabled, apply 3.3V to VCC with other control set to 0V * Set VTX=High, keeping VRX and LNA_MODE at 0V * Apply 0V to ANT_SEL to select the ANT1 port, or 2.8V to select the ANT2 port * VCC current should rise to 70mA to 80mA quiescent current * Enable the RF source; VCC current should rise to a maximum of 200mA depending on output power RX LNA Mode * With the RF source disables, apply 3.3V to VCC with other controls set to 0V * Set VRX=High to RX Enable and LNA_MODE, keeping TX at 0V * Apply 0V to ANT_SEL to select the ANT1 port, or 2.8V to select the ANT2 port * VCC current should rise to 7mA to 8mA * Enable the RF source; VCC current may increase a few mA depending on output power RX Bypass Mode * With the RF source disabled, apply 3.3V to VCC with other controls set to 0V * Set VRX=High, keeping TX and LNA_MODE at 0V * Apply 0V to ANT_SEL to select the ANT1 port, or 2.8V to select the ANT2 port * VCC current should be in the uA range * Enable the RF source; VCC current should remain in the uA range Logic Table RX_EN LNA_MODE Mode TX_EN TX-ANT1 HIGH LOW LOW ANT_SEL LOW TX_ANT2 HIGH LOW LOW HIGH RX-ANT1 LNA LOW HIGH HIGH LOW RX-ANT1 BYP LOW HIGH LOW LOW RX-ANT2LNA LOW HIGH HIGH HIGH RX-ANT2 BYP LOW HIGH LOW HIGH All OFF LOW LOW LOW LOW Operating currents at nominal conditions DS111110 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 7 of 11 RF6525 Evaluation Board Schematic VBATT 1uF 0.1uF 4.3nH NC TXCT 1.8nH 15 TXN 16 RXBN RXCT 100 Ohms 100 Ohms 12 11 10 9 AN T 18 19 20 1 2 8 50 Ohms ANT 7 Balun Balun RXBP 17 100 Ohms 13 Balun TXP 50 Ohms 100 Ohms Balun 50 Ohms 14 6 3 4 50 Ohms ANT2 5 LNA_MODE TX_EN RX_EN 3.0nH ANT_SEL 0.1uF VBATT 8 of 11 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. DS111110 RF6525 PCB Design Requirements PCB Surface Finish The PCB surface finish used for RFMD's qualification process is electroless nickel, immersion gold. Typical thickness is 3inch to 8inch gold over 180inch nickel. PCB Land Pattern Recommendation PCB land patterns for RFMD components are based on IPC-7351 standards and RFMD empirical data. The pad pattern shown has been developed and tested for optimized assembly at RFMD. The PCB land pattern has been developed to accommodate lead and package tolerances. Since surface mount processes vary from company to company, careful process development is recommended. PCB Metal Land and Solder Mask Pattern Thermal vias for center slug "C" should be incorporated into the PCB design. The number and size of thermal vias will depend on the application, the power dissipation, and this electrical requirements. Example of the number and size of vias can be found on the RFMD evaluation board layout. DS111110 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 9 of 11 RF6525 RF6525 2.4 GHz Front End Module Input Power versus Output Power Input Power versus Output Power (Over Temperature @ 2441.5 MHz) Vcc = 3.3V; TX_EN = 3.0V Input Power versus Output Power Vcc = 3.3V; TX_EN = 3.0V 10 10 5 5 0 -5 2400 MHz -10 2441.5 MHz -15 2483 MHz -20 Input Power (dBm) Input Power (dBm) 0 -5 -40 C -10 25 C -15 85 C -20 -25 -25 -30 -30 -35 -35 0 2 4 6 8 10 12 14 16 18 20 0 22 2 4 6 8 10 12 14 16 18 20 22 Output Power (dBm) Output Power (dBm) Gain versus Output Power Gain versus Output Power (Over Temperature @ 2441.5 MHz) Vcc = 3.3V; TX_EN = 3.0V Gain versus Output Power Vcc = 3.3V; TX_EN =3.0V 34 50 32 45 30 40 28 Gain (dB) 2400 MHz 24 22 2441.5 MHz 20 2483 MHz 18 30 -40 C 25 25 C 20 85 C 15 16 10 14 5 12 10 0 0 2 4 6 8 10 12 14 Output Power (dBm) 10 of 11 Gain (dB) 35 26 16 18 20 22 0 2 4 6 8 10 12 14 16 18 20 22 Output Power (dBm) 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. DS111110 RF6525 RF6525 2.4 GHz Front End Module Operating Current versus Output Power Operating Current vs Output Power (Over Temperature @ 2441.5 MHz) Vcc = 3.3V; TX_EN = 3.0V 0.25 0.25 0.2 0.2 0.15 2400 MHz 2441.5 MHz 2483 MHz 0.1 0.05 Operating Current (A) Operating Current (A) Operating Current vs Output Power Vcc = 3.3V; TX_EN = 3.0V 0.15 -40 C 25 C 0.1 85 C 0.05 0 0 0 2 4 6 8 10 12 14 16 18 20 22 0 2 4 6 Output Power (dBm) 8 10 12 14 16 18 20 22 Output Power (dBm) TX S21 versus Frequency TX S21 vs Frequency (Over Temperature ) Vcc = 3.3V; TX_EN =3.0V 60 50 S21 (dB) 40 -40 C 30 25 C 85 C 20 10 0 2400 2441.5 2483 2500 Frequency (MHz) DS111110 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 11 of 11