RF5725 2.4GHz TO 2.5GHz SINGLE-BAND FRONT END MODULE Features 3 VREG 4 Cellular handsets Mobile devices Tablets Consumer electronics Gaming Netbooks/Notebooks TV/monitors/video SmartEnergy C RX C TX BT 12 C BT 11 ANT SP3T 2F0 Filter POUT =17dBm, 11g, OFDM at <3% EVM, 21dBm 11b Meeting 11b Spectral Mask Low Height Package, Suited for SiP and CoB Designs Applications TX IN 13 10 GND 9 5 6 7 8 N/C 2 14 VCC RX OUT 15 VCC Single Module Radio Front End Single Supply Voltage 3.0V to 5V Integrated 2.4GHz to 2.5GHz b/g Amplifier LNA, TX/RX Switch, PDETECT Coupler 1 16 PDETECT LNA VCC LNA EN Package Style: QFN, 16-pin, 3mmx3mmx0.5mm VCC Functional Block Diagram Product Description The RF5725 is a single-chip integrated front-end module (FEM) for high performance WiFi applications in the 2.4GHz to 2.5GHz ISM band. This FEM greatly reduces the number of external components, minimizing footprint and assembly cost of the overall 802.11b/g solution. The RF5725 has an integrated b/g power amplifier, LNA, a Coupler Power detector, and TX filtering. It also is capable of switching between WiFi RX, WiFi TX, and BTH RX/TX operations. This device is manufactured using GaAs HBT and pHEMT processes on a 3mmx3mmx0.5mm 16-pin QFN package. This module meets or exceeds the RF front-end needs of 802.11b/g WiFi RF systems. Ordering Information RF5725 RF5725SR RF5725TR7 RF5725PCK-410 Standard 25 piece bag Standard 100 piece reel Standard 2500 piece reel Fully assembled evaluation board tuned for 2.4GHz to 2.5GHz and 5 loose sample pieces Optimum Technology Matching® Applied GaAs HBT GaAs MESFET InGaP HBT SiGe BiCMOS Si BiCMOS SiGe HBT GaAs pHEMT GaN HEMT Si CMOS Si BJT RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ 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. ©2006, RF Micro Devices, Inc. DS120214 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 1 of 11 RF5725 Absolute Maximum Ratings Parameter DC Supply Voltage DC Supply Current Rating Unit 5.0 V 240 mA Full Specification Temp Range (Full Spec. Compliant) -10 to +70 °C Extreme Operating (Reduced Performance) -40 to -10 +70 to +85 Storage Temperature -40 to +150 °C 5 dBm 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. RoHS status based on EUDirective2002/95/EC (at time of this document revision). Maximum TX Input Power for 11b/g (No Damage) Moisture Sensitivity 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. MSL2 Specification Min. Typ. Max. Parameter Unit Condition 2.4GHz Transmit Parameters Compliance IEEE802.11b, IEEE802.11g, FCC CFG 15.247, .205, .209 Nominal Conditions Specifications must be met across VCC, VREG, frequency, process, and temperature, unless otherwise specified. Frequency 2.4 2.5 GHz Output Power 11g 16 11g 15 11b 20 11b 18 EVM* dBm OFDM 54Mbps, VCC =3.3 < 4.2V, T=10° to 75°C dBm Derated performance over Freq, Temp, and Process. 21 dBm 11Mbps, CCK, VCC=3.3 < 4.2V, T=10°C to +75°C. 19 dBm Derated performance over Freq, Temp, and Process. 17 54Mbps OFDM VCC 3.6V, 50see Note 1, 5 3.0 4.0 % ACP1 -38 -34 dBc POUT(b)=21dBm, 1Mbps CCK, Note 4. Meeting 11b spectral mask requirements with 3dB margin ACP2 -56 -53 dBc POUT(b) =21dBm, 1Mbps CCK, Note 4. Meeting 11b spectral mask requirements with 3dB margin Adjacent Channel Power Gain 24 26 dB Gain Variation VCC Frequency -0.5 Voltage Detect 0.1 0.7 dB/V +0.5 dB 2.4GHz to 2.5GHz Power Detect 1.5 V POUT =17dBm 1.0 V Input Resistance 10 k Input Capacitance 5 Bandwidth 800 PDETECT Accuracy -1.5 1000 IEEE802.11g, 54Mbps 64QAM modulation pF kHz +1.5 dB POUT =17dBm *The EVM specification is obtained with a signal generator that has an EVM level <0.7%. 2 of 11 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. DS120214 RF5725 Parameter Min. Specification Typ. Max. Unit Condition 2.4GHz Transmit Parameters, cont’d Sensitivity >10dBm 25 mV/dB 0<POUT <10dBm 8 mV/dB Current Consumption 130 ICC mA Idle 95 IREG 3 Leakage mA 5 mA A 2 10 Power Supply 3.0 3.6 4.5 V VREG 2.75 2.85 2.95 V Input/Output Impedance RFPOUT =17dBm, 54Mbps IEEE802.11g RFPOUT =21dBm, 11Mbps IEEE802.11b 190 VCC =3.6V, VREG =2.85V, and RF=OFF 50 Ruggedness No damage Output VSWR 10:1 Maximum: operating voltage, input power, temperature 5:1 All phase angles, no spurious or oscillations. Stability Output VSWR Out of Band Performance S21 (DC to 960MHz) 0 dB S21 (1570MHz to 1580MHz) 18 dB S21 (1805MHz to 1990MHz) 20 dB S21 (2110MHz to 2170MHz) 25 Thermal Resistance dB All other ports terminated in their nominal impedances 79.3 °C/W VCC=3.3, VREG=2.9V, C_TX=3.3, C_RX=C_BT=GND, POUT=17dBm, Modulation=On, Freq=2.45GHz, DCC=100%, T=85°C 87.2 °C/W VCC=4.8, VREG=3V, C_TX=3.3, C_RX=C_BT=GND, POUT=17dBm, Modulation=On, Freq=2.45GHz, DC=100%, T=85°C 4.80GHz to 5.00GHz Harmonics RBW=1MHz. Measured at 1Mbps. Second -35 -32 dBm Third -45 -42 dBm 0.5 1.0 S Output stable to within 90% of final gain Turn-On/Off Time Antenna Port Impedance 7.20GHz to 7.50GHz Antenna port is a DC short to ground Input 50 Receive Output 50 Transmit Switch Control Voltage Low High 2.7 0 0.2 V 2.8 3.6 V Switch Control Current 10 A Switch Control Speed 100 nsec ESD DS120214 Per control line All pins unless otherwise stated. Human Body Model 1000 V EIA/JESD22-114A Charge Device Model 500 V EIA/JESD22-C101C 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 3 of 11 RF5725 Parameter Min. Specification Typ. Max. Unit Condition 2.4GHz Receive Parameters Frequency 2.4 2.5 GHz Receive Gain 10 13 16 dB WiFi RX mode only 7 10 13 dB WiFi RX and BT RX mode 2.1 dB WiFi RX mode only 5.5 dB WiFi RX and BT RX mode Noise Figure Passband Ripple -1 Output Return Loss Output Impedance +1 dB -9.6 dB 30 A 50 Current Consumption LNA VCC 8 mA LNA enable 2 mA 5 uA No external matching LNA ON LNA OFF BluetoothTM Parameters Frequency 2.4 Insertion Loss 0.8 3.75 2.5 GHz 1.2 dB SP3T switch, all unused ports terminated into their nominal impedance. BluetoothTM mode only WiFi RX and BT RX mode 5.50 dB +0.2 dB Input/Output Power 8 dBm Output Return Loss -10 dB No external matching 30 A Switch leakage current Passband Ripple -0.2 Output Impedance 50 Current Consumption *The EVM specification is obtained with a signal generator that has an EVM level <0.7%. Note 1. The PA module must operate with gated bias voltage input at 1% to 99% duty cycle. Note 2. No external matching components. Antenna port is a DC short to GND. Note 3. Values to be agreed upon characterization data review: current, gain, return loss, detector sensitivity, and output power. Note 4. The output power for channels 1 and 13 may be reduced to meet FCC restricted band requirements. Note 5: EVM at lower output power values will never exceed nominal operating power EVM. EVM should be monotonic from 0dBm to rated output power. Isolation Table Parameter Min. Typ. Max. Unit WiFi RX to BT RX/TX 20 dB WiFi TX to BT RX/TX 20 dB WiFi RX to WiFi TX 20 dB WiFi RX and BT RX Mode 9 dB Switch Control Logic Mode C_RX C_TX C_BT BluetoothTM L L H WiFi Tx L H L WiFi Rx H L L WiFi Rx/BT H L H *The FEM can simultaneously receive WiFi and BluetoothTM in the WiFi RX and BT RX Mode. 4 of 11 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. DS120214 RF5725 Pin 1 2 3 4 Function LNA VCC RX OUT TX VREG 5 PDETECT 6 7 8 9 10 11 12 13 14 15 16 VCC VCC N/C VCC GND ANT C_BT BT C_TX C_RX LNA_EN Description Voltage supply for the LNA (labeled VCC3 on evaluation board). Receive port for 802.11b/g band. Internally matched to 50. DC block provided. RF input for the 802.11b/g PA. Input is matched to 50 and DC block is provided. Regulated voltage for the bias control circuit. An external bypass capacitor may be needed on the VREG line for decoupling purposes. Power detector voltage for TX section. PDET voltage varies with output power. May need external decoupling capacitor for module stability. May need external circuitry to bring output voltage to desired level. Supply voltage for the bias circuit of the PA. Supply voltage for the first stage of the PA. Add an external 0.1uF capacitor for low frequency decoupling. No connect. Supply voltage for the second stage of the PA. Add an external 0.1uF capacitor for low frequency decoupling. Ground. Port matched to 50 and is a DC short to ground. Switch control port. See truth table for proper level. RF bidirectional port for BluetoothTM. Input is matched to 50 and DC block is provided. Switch control port. See switch truth table for proper level. Switch control port. See switch truth table for proper level. LNA enable pin. This is an active high control. A bypass capacitor may be needed for supply noise decoupling. Package Drawing DS120214 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 5 of 11 RF5725 6 of 11 LNA_EN C_RX C_TX BT Pin Out 16 15 14 13 LNA VCC 1 12 C_BT RX OUT 2 11 ANT TX IN 3 10 GND VREG 4 5 6 7 8 PDETECT VCC VCC N/C 9 VCC 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. DS120214 RF5725 Evaluation Board Schematic LNA Vcc C_RX C_TX J3 BT LNA_EN C1 0.1 F U1 RF5725 L1 2.4 nH J2 RX OUT J1 TX IN 16 50 strip 50 strip 15 14 13 1 12 2 11 3 10 4 VREG P1-1 R1 0 9 5 6 7 VBT J4 ANT 50 strip VCC2 L3 1.8 nH 8 N/C C8 0.1 F L2 3 nH VCC1 C7 0.1 F P1-3 P1-4 P1 1 VREG 2 GND 3 PDETECT VCC 4 HDR_1X4 P2-6 P2 6 VBT P2-5 5 VTX P2-4 4 VRX P2-3 3 LNA_EN 2 GND 1 VCC3 (LNA Vcc) P2-1 HDR_1X6 C4 330 pF PDETECT VCC bias DS120214 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 7 of 11 RF5725 Theory of Operation The RF5725 FEM is a single-chip integrated front-end module (FEM) for high performance WiFi applications in the 2.4GHz to 2.5GHz ISM band. The FEM greatly reduces the number of external components minimizing footprint and assembly cost of the overall 802.11b/g solution. The RF5725 has an integrated b/g power amplifier, LNA, a Couple Power Detector, and TX filtering. It is also capable of switching between WiFi RX, WiFi TX, and BTH RX/TX operations. The device is manufactured using GaAs HBT and pHEMT processes on a 3mmx3mmx0.5mm 16-pin QFN package. The module meets or exceeds the RF front-end needs of the 802.11b/g WiFi RF systems. The RF5725 is a very easy part to implement, but care in circuit layout and component selection is always advisable when designing circuits that operate at high frequencies. To reduce the design and optimization process on the customer application, the evaluation board layout should be copied as close as possible, in particular the ground and via configurations. Gerber files of RFMD PCBA designs can be provided upon request. The supply voltage lines should present an RF short to the FEM by using bypass capacitors on the VCC traces. Please contact RFMD Sales or Application Engineering for additional data and guidance. To simplify bias conditions, the FR5725 requires a single positive supply voltage (VCC), a positive current control bias (VREG) supply, and a positive supply for switch control. The built in Coupler Power Detector of the FR5725 is very accurate and minimizes calibration time in the system. All inputs and outputs are internally matched to 50. Transmit Path The RF5725 has a typical gain of 28dB form 2.4GHz to 2.5GHz, and delivers 17dBm typical output power under 54Mbps OFDM modulation and 21dBm under 1Mbps 11b modulation. The RF5725 requires a single positive of 3.3V to 4.2V to operate at full specifications. Current control optimization for the 802.11b/g band is provided through one bias control input pin (VREG). The VREG pin requires a regulated supply to maintain nominal bias current. Out of Band Rejection The RF5725 contains basic filtering components to produce a bandpass response for the transmit path. Due to space constraints inside the module filtering is limited to a few resonant poles. Depending upon the end-user’s application, additional filters may be needed to meet the out of band rejection requirements of the system. Receive Path The 802.11b/g path has a 50 single-ended port with a nominal gain of 10dB in WiFi RX mode and 6dB in WiFi RX/BT mode. The Receive port return loss is 9.6dB minimum. The RF5725 is designed so that the SP3T may act as a 3dB splitter when placed in the WiFi RX and BT RX mode. In this mode, the FEM can receive Bluetooth™ and WiFi signals simultaneously with an additional 3dB of loss. 8 of 11 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. DS120214 RF5725 RF5275 Biasing Instructions: • 802.11b/g Transmit: • Connect the FEM to a signal generator at the input and a spectrum analyzer at the output. • Bias VCC to 3.6V first with VREG =0.0V. • Refer to switch operational truth table to set the control lines at the proper levels for WiFi TX. • Turn on VREG to 2.85V (typ.). VREG controls the current drawn bu the 802.11b/g power amplifier and the current should quickly rise to ~100mA ± 20mA for a typical part but it varies based on the output power desired. Be externally careful not to exceed 3.4V on the VREG pin or the part may exceed device current limits. • 802.11b/g Receive • To receive WiFi set the switch control lines per the truth table below. • Bluetooth™ Receive • To receive Bluetooth™ set the switch control lines per the truth table below. Switch Control Logic Mode C_RX C_TX C_BT L L H WiFi Tx L H L WiFi Rx H L L WiFi Rx/BT H L H Bluetooth TM *The FEM can simultaneously receive WiFi and BluetoothTM in the WiFi RX and BT RX Mode. DS120214 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 9 of 11 RF5725 Evaluation Board Layout Board Size 2.0” x 2.0” Board Thickness 0.032”, Board Material FR-4, Multi-Layer 10 of 11 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. DS120214 RF5725 RF5725 Plots Operang Current versus Output Power VCC = 3.3V Vreg = 2.85V Temperature = 25C Gain versus Output Power VCC = 3.3V Vreg = 2.85V Temperature = 25C Gain (dB) 35 30 2400 MHz 25 2450 MHz 20 2500 MHz 15 Operang Current (A) 40 10 0.21000 0.19000 0.17000 0.15000 0.13000 0.11000 0.09000 0.07000 0.05000 2450 MHz 2500 MHz 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Output Power (dBm) Output Power (dBm) Power Detector versus Output Power VCC = 3.3V Vreg = 2.85V Temperature = 25C EVM versus Output Power VCC = 3.3V Vreg = 2.85V Temperature = 25C 1.20000 8 7 0.80000 0.60000 6 2450 MHz 5 2500 MHz 0.40000 2400 MHz 4 2450 MHz 3 2500 MHz 2 0.20000 1 0.00000 DS120214 2400 MHz EVM(%) 1.00000 Pdet (V) 2400 MHz 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Output Power (dBm) Output Power (dBm) 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 11 of 11