RFFM7600 RFFM7600 5.0V, 2.5GHz TO 2.7GHz HIGH POWER FRONT END MODULE 5.0V, 2.5GHz TO 2.7GHz HIGH POWER FRONT END MODULE Package: 6mm x 6mm Laminate GND 1 GND 2 24 23 GND 22 GND 21 ANT 20 GND 19 17 18 Pdet GND RX 16 Vcc3 3 15 Vreg3 WiMAX Applications LTE TDD Application Customer Premises Equipment (CPE) Data Cards and Terminals Spread-Spectrum and MMDS Systems Pdown 14 Vreg2 Inter Stage Match Vtx Vrx Bias 13 Vreg1 Applications Vcc2 4 6 GND 5 Vcc1 GND Inter Stage Match Input Match 12 TXIN 11 GND 10 34dB Typical Gain Across Frequency Band POUT = 27dBm <2.5% EVM WiMAX 2.5GHz to 2.7GHz Frequency Range POUT = 24dBm, -48dBc ACPR LTE DL Integrated 3-stage PA, filtering and T/R switch. Integrated Power Detector and High Impedance Control Pin 9 GND 8 Features 7 Vbias Functional Block Diagram Product Description The RFFM7600 is a Front End Module, designed for the WiMAX 2.5GHz to 2.7GHz market with LTE bands between 2.5GHz to 2.7GHz. It consists of a Power Amplifier with Tx harmonic filtering and T/R switching. RFFM7600 is provided in a 6mm x 6mm laminate package, incorporating SMD's for filtering and matching. Ordering Information RFFM7600PCK-410 RFFM7600SB RFFM7600SR RFFM7600TR7 RFFM7600SQ RFFM7600 Eval board with 5-piece bag 5-Piece bag 100-Piece Reel 2500-Piece reel 25-Piece bag Optimum Technology Matching® Applied GaAs HBT GaAs MESFET InGaP HBT SiGe BiCMOS Si BiCMOS SiGe HBT GaAs pHEMT Si CMOS Si BJT GaN HEMT BiFET HBT 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. ©2012, RF Micro Devices, Inc. DS120427 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 1 of 12 RFFM7600 Absolute Maximum Ratings Parameter Rating Unit Supply Voltage (RF Applied) -0.5 to +5.25 V Supply Voltage (No RF Applied) -0.5 to +6.0 V DC Supply Current 1000 mA A Input RF Power +10* dBm Operating Ambient Temperature -30 to +85 °C Storage Temperature -40 to +150 °C Moisture Sensitivity 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. 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. MSL3 *Maximum Input Power with a 50 load. Specification Min. Typ. Max. Parameter Unit Typical Conditions T = 25°C, VCC = 5V, VREG = 2.85V, PDOWN = 2.85V; Frequency 2570 Output Power 24 ACP (adjacent Channel) 2620 24.5 -48 EVM Operating Current Quiescent Current Output Power 23 ACP (adjacent Channel) dBc 3 % mA 24 EVM At rated POUT At POUT = 24dBm mA 2700 -48 LTE Band 38 Compliance: LTE Downlink; using a 20MHz, LTE DL ETM1.1 waveform, unless otherwise noted. dBm 575 2500 MHz -45 700 Frequency MHz LTE Band 41 Compliance: LTE Downlink; using a 20MHz, LTE DL ETM1.1 waveform, unless otherwise noted. dBm -41 dBc 3 % Operating Current 700 mA Quiescent Current 575 mA TX Other At rated POUT At POUT = 24dBm Compliance: LTE Downlink; using a 20MHz, LTE DL ETM1.1 waveform, unless otherwise noted. 2nd Harmonic -45 3rd Harmonic -50 Frequency 2500 802.16e Output Power -38 2700 2.5 Gain 32 Gain Variation -2 dBm/MHz At rated POUT dBm/MHz 27 EVM 3 34 MHz Compliance: IEEE802.16e, using a 10MHz, IEEE802.6e waveform, unless otherwise noted. dBm 25°C 10MHz 802.16e mask % dB 2 dB Gain in Low Gain/Power Mode 15 dB Operating Current 825 mA Quiescent Current 575 mA 2nd Harmonic -43 dBm/MHz 3rd Harmonic -50 dBm/MHz 2 of 12 Condition VREG2 = 0V Over all conditions 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. DS120427 RFFM7600 Parameter Unit Condition Tx General Spec Compliance: IEEE802.16e, using a 10MHz, IEEE802.6e waveform, unless otherwise noted. Gain 32 Gain Variation -2 34 Input Return Loss 10 15 VREG 2.8 2.85 IREG 0.2 PDOWN Current 11 Leakage Current 0.2 Turn-on Time 0.4 Stability dB dB 8 Power Detect Range At POUT = 24dBm dB 2 -25 In specified frequency band 2.9 V 10 mA 2.1 V POUT range of 0dBm to 30dBm mA VCC = 5V, VREG =2.85V, PDOWN = 0V 0.5 mA VCC = 5V, VREG= 0V, PDOWN = 0V 1 s Output stable to within 90% of final gain 30 dBm No spurs above -47dBm into 4:1 VSWR No Damage into Output VSWR 10:1 Max Pin (Ruggedness - 50) 10 50 load at nominal pin dBm No damage RX Spec Compliance: IEEE802.16e, using a 10MHz, IEEE802.6e waveform, unless otherwise noted. Rx Insersion Loss 0.7 RX to ANT isolation - in Tx mode 26 1 dB dB RX to TX isolation - in Tx mode 25 dB Control Compliance: IEEE802.16e, using a 10MHz, IEEE802.6e waveform, unless otherwise noted. Voltage Logic High 2.8 Voltage Logic Low 0 3.1 3.4 V 0.3 V Control Current - Logic High 5 10 A Control Current - Logic Low 0.1 1 A 0.5 s T/R switching time Other Compliance: IEEE802.16e, using a 10MHz, IEEE802.6e waveform, unless otherwise noted. Thermal Resistance Rth_j 14 °C/W ESD Human Body Model Charge Device Model 500 V EIA/JESD22-114A RF Pin to Ground 500 V EIA/JESD22-114A DC Pin to Ground 1000 V JESD22-C101C all pins to Ground RFFM7600 Truth Table Status TX Mode RX Mode DS120427 PDOWN VTX VRX 1 1 0 0 0 1 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 3 of 12 RFFM7600 Pin Names and Descriptions Pin 1 2 3 Name GND GND VCC3 4 VCC2 5 6 GND VCC1 7 8 9 10 11 12 VBIAS GND GND TXIN GND PDOWN 13 14 15 16 17 18 19 20 21 22 23 24 PkG Base VREG1 VREG2 VREG3 PDET GND RX VRX GND ANT GND GND VTX GND 4 of 12 Description Ground connection Ground connection This pin is connected internally to the collector of the 3rd stage RF device. To achieve specified performance, the layout of these pins should match the Recommended Land Pattern. This pin is connected internally to the collector of the 2nd stage RF device. To achieve specified performance, the layout of these pins should match the Recommended Land Pattern. Ground connection This pin is connected internally to the collector of the 1st stage RF device. To achieve specified performance, the layout of these pins should match the Recommended Land Pattern. Supply voltage for the bias reference and control circuits. Ground connection Ground connection RF input is internally matched to 50 and DC blocked. Ground connection Power down pin. Apply <0.6VDC to power down the three power amplifier stages. Apply 1.75VDC to 5.0VDC to power up. If function is not desired, Pin may be connected to VREG. First stage bias voltage. This Pin requires regulated supply for best performance. Second stage bias voltage. This Pin requires regulated supply for best performance. Third stage bias voltage. This Pin requires regulated supply for best performance. Power detector provides an output voltage proportional to the RF output power level. Ground connection RF Output is internally matched to 50 and DC blocked. Switch control for RX mode Ground connection RF Output is internally matched to 50 and DC blocked. Ground connection Ground connection Switch control for TX mode Ground connection 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. DS120427 RFFM7600 Theory of Operation and Applications The RFFM7600 is a single-chip integrated front end module (FEM) for high performance LTE DL and WiMAX applications in the 2.5GHz to 2.7GHz ISM band. The FEM greatly reduces the number of external components minimizing footprint and assembly cost of the overall LTE TDD and 802.16e solution. The RFFM7600 has an integrated linear power amplifier, a power detector, and Tx filtering and a switch, which is capable of switching between Rx and Tx operations. The device is manufactured using InGaP HBT and pHEMT processes on a 6mm x 6mm x 0.95mm laminate package. The module meets or exceeds the RF front end needs of the LTE DL and WiMAX RF systems. As the RFFM7600 is fully RF matched to 50 internally and requires minimal external components, it is very easy to implement on to PCB designs. 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. To simplify bias conditions, the RFFM7600 requires a single positive supply voltage (VCC), a positive current control bias (VREG) supply or high impedance enable, and a positive supply for switch control. The built-in power detector of the RFFM7600 can be used as power monitor in the system. All inputs and outputs are internally matched to 50. Transmit Path The RFFM7600 has a typical gain of 34dB from 2.5GHz to 2.7GHz, and delivers >27dBm typical output power in WiMAX and >24dBm typical in LTE DL with ACP <-45dBc The RFFM7600 requires a single positive of 5.0V to operate at full specifications. The VREG pin requires a regulated supply at 2.85V to maintain nominal bias current. Out of Band Rejection The RFFM7600 contains a low pass filtering (LPF) to attenuate the 2nd Harmonics to -38dBm/MHz (typical). 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 Rx path has a 50 single-ended port. The Receive port return loss is 9.6dB minimum. In this mode, the FEM has an insertion loss of 0.8dB and 30dB (typical) isolation to Tx port. RFFM7600 Biasing Instructions to the Eval board: • WiMAX or LTE DL Transmit: • Connect the FEM to a signal generator at the input and a spectrum analyzer at the output. Set the pin at signal generator is at -20dBm. • Bias VCC to 5.0V first with VREG = 0.0V. If available, enable the current limiting function of the power supply to 1100mA. • Refer to switch operational truth table to set the control lines at the proper levels for Tx. It is recommended to maintain at least 2.85V on VTX during Tx mode. A lower VTX voltage will enable the switch in Tx mode, but 2.85V is needed to ensure that the switch stays in Tx mode during high power peaks. Using a VTX voltage less than 2.85V in Tx mode could result in abnormal operation or device damage. • Turn on VREG to 2.85V (typ.). On VREG (of Eval board), regulated supply is recommended. Be extremely careful not to exceed 3.0V on the VREG pin or the part may exceed device current limits. • Turn on PDOWN to 2.85V (typ.). PDOWN Pin can be tied to VREG supply. NOTE: It is important to adjust the VCC voltage source so that +5V is measured at the board; and the +2.85V of VREG is measured at the board. The high collector currents will drop the collector voltage significantly if long leads are used. Adjust the bias voltage to compensate. • Turn on RF of signal generator and gradually increase power level to the rated power. CAUTION: If the input signal exceeds the maximum rated power, the RFFM7600 evaluation board can be permanently damaged. • To turn off FEM, turn off RF power of signal generator; then PDOWN, VREG and VCC. DS120427 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 5 of 12 RFFM7600 • Receive • To receive WiMAX or LTE set the switch control lines per the truth table. General Layout Guidelines and Considerations: For best performance the following layout guidelines and considerations must be followed regardless of final use or configuration: 1. The ground pad of the RFFM7600 has special electrical and thermal grounding requirements. This pad is the main RF ground and main thermal conduit path for heat dissipation. The GND pad and vias pattern and size used on the RFMD evaluation board should be replicated. The RFMD layout files in Gerber format can be provided upon request. Ground paths (under device) should be made as short as possible. 2. The RF lines should be well separated with solid ground in between the traces to eliminate any possible RF leakages or cross-talking. 3. Bypass capacitors should be used on the DC supply lines. The VCC lines may be connected after the RF bypass and decoupling capacitors to provide better isolation between each VCC line. RFFM7600 Tx Production and System Calibration Recommendation: It is highly recommended to follow the DC biasing step and RF power settings in the production calibration or test. 1. 2. 3. 4. 5. Connect the RF cables of input and output then connect to the proper equipment. Apply VCC, then VREG as per the data sheet recommendations. Set FEM in Tx mode by the truth table. Apply PDOWN = high. Set RF input to the desired frequency and initial RF input power at -20dBm. This will insure the power amplifier is in a linear state and not over driven. 6. Sweep RF from low to high output power and take measurements at the rated output power. 7. Ensure that the output power at turn on does not saturate the power amplifier. The recommended output power should be about 10dB to 20dB below the nominal input power. Start calibrating from low to high power in reasonable steps until the rated power is reached then take the measurements. CAUTION: If the input signal exceeds the maximum rated input power specifications, the RFFM7600 could be permanently damaged. 6 of 12 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. DS120427 RFFM7600 Package Drawing A A 2x 1.800 A 2x 0.900 0.000 A A 2x 0.900 A A 2x 1.800 A 7x 2.700 2x 1.800 A 2x 0.900 A 0.000 A A 2x 0.900 A A 2x 1.800 7x 2.700 PCB METAL LAND PATTERN A A A A A A A A A A 20x 0.150 B A 3x 1.550 A 2x 1.800 A 2x 0.900 A 0.000 A 2x 0.900 A 2x 1.800 7x 2.700 A A A A = 0.400 x 0.400 mm B = 4.400 x 4.400 mm 7x 2.700 A A 7x 2.700 A A A A A A A A 7x 2.700 A B A A 2x 1.800 A 20x 0.300 7x 2.700 2x 0.900 A A 0.000 A 2x 0.900 A A 2x 1.800 A 7x 2.700 A 3x 1.550 A A = 0.550 x 0.550 mm B = 4.550 x 4.550 mm 7x 2.700 PCB SOLDER MASK PATTERN A B 3x 1.550 A 2x 1.800 A 2x 0.900 A 0.000 A 2x 0.900 A 2x 1.800 7x 2.700 B B A 20x 0.385 A B B B B B B A 3x 1.550 Notes: A A A A 2x 0.900 2x 1.800 7x 2.700 2x 1.800 A 0.000 A 2x 0.900 A 7x 2.700 A A = 0.360 x 0360 mm B = 1.170 x 1.179 mm PCB STENCIL PATTERN 1. Shaded area represents Pin 1 location Note: Thermal vias for center slug “B” should be incorporated into the PCB design. The number and size of thermal vias will depend on the application. Example of the number and size of vias can be found on the RFMD evaluation board layout. DS120427 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 7 of 12 RFFM7600 GND ANT GND Vrx 24 23 22 21 20 19 GND 2 18 RX Vcc3 3 17 GND Vcc2 4 16 Pdet GND 5 15 Vreg3 6 7 8 9 10 11 12 GND GND TXIN GND Pdown 14 Vreg2 Vbias Vcc1 8 of 12 GND GND 1 Vtx Pin Out 13 Vreg1 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. DS120427 RFFM7600 RFFM7600 Evaluation Board Top Layer Bottom Layer DS120427 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 9 of 12 RFFM7600 Evaluation Board Schematic VCC P2 P1 C3 10 uF VCC 1 Vtx 1 2 Vrx 2 3 PDET 3 4 VREG 4 HDR_1X4 VREG2 5 Pdown 6 7 C4 1 uF HDR_1X7 1 2 3 4 5 6 7 Vtx 2 4 8 2 3 9 2 2 RFFM7600 1 0 J3 TXIN 1 1 2 1 1 2 2 0 J1 ANT Vrx 1 9 1 8 1 7 1 6 1 5 R2 0 C1 1000pF C2 DNP Pdown 1 4 1 3 R3 DNP VREG2 J2 RX R1 20K VREG PDET Bill of Materials (BOM) Description Qty Reference Designator Manufacturer Manufacturer's P/N CAP, 1000pF, 10%, 50V, X7R, 0402 1 C1 Murata Electronics GRM155R71H102KA01D CAP, 1uF, 10%, 10V, X5R, 0603 1 C4 Murata Electronics GRM188R61A105KA61D CAP, 10uF, 10%, 10V, X5R, 0805 1 C3 Murata Electronics RM21BR61A106KE19L CONN, SMA, END LNCH, UNIV, HYB MNT, FLT 3 J1, J2, J3 MOLEX SD-73251-4000 RES, 20K, 5%, 1/16W, 0402 1 R1 PANASONIC INDUSTRIAL CO ERJ-2GEJ203 Kamaya, Inc RMC1/16SJPTH RFMD RFFM7600 RES, 0 OHM, 0402 3 R2 DNI 2 R3, C2 RFFM7600 1 U1 10 of 12 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. DS120427 RFFM7600 Performance Plots APLR (dB) versus POUT (dBm) - 40°C VCC = 5VDC VREG = 2.85VDC E-TM1.1 with LTE DL 20MHz ACLR (dB) versus POUT (dBm) 25° C VCC = 5VDC VREG = 2.85VDC E-TM1.1 with LTE DL 20MHz -20.0 -20.0 2500MHz -25.0 2500MHz -25.0 2570MHz 2570MHz 2570MHz -30.0 2620MHz -30.0 2700MHz -35.0 EVM (%) EVM (%) -35.0 2700MHz -40.0 -40.0 -45.0 -45.0 -50.0 -50.0 -55.0 -55.0 -60.0 -60.0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 0 2 4 6 8 10 Output Power (dBm) 16 18 20 22 24 26 28 30 22 24 26 28 30 22 24 26 28 30 ICC (A) versus POUT (dBm) - 40° C VCC = 5VDC VREG = 2.85VDC -20.0 1.20 2500MHz 2500MHz -25.0 1.10 2570MHz 2570MHz 2620MHz -30.0 2620MHz 1.00 2700MHz 2700MHz 0.90 ICC (A) -35.0 EVM (%) 14 Output Power (dBm) ACLR (dB) versus POUT (dBm) 85° C VCC = 5VDC VREG = 2.85VDC E-TM1.1 with LTE DL 20MHz -40.0 0.80 -45.0 0.70 -50.0 0.60 -55.0 0.50 -60.0 0.40 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0 24.0 26.0 28.0 30.0 0 2 4 6 8 10 Output Power (dBm) 12 14 16 18 20 Output Power (dBm) ICC (A) versus POUT (dBm) 25° C VCC = 5VDC VREG = 2.85VDC ICC (A) versus POUT (dBm) 85° C VCC = 5VDC VREG = 2.85VDC 1.20 1.20 2500MHz 1.10 2500MHz 1.10 2570MHz 2570MHz 2620MHz 1.00 2620MHz 1.00 2700MHz 2700MHz 0.90 ICC (A) 0.90 ICC (A) 12 0.80 0.80 0.70 0.70 0.60 0.60 0.50 0.50 0.40 0.40 0 2 4 6 8 10 12 14 16 18 Output Power (dBm) DS120427 20 22 24 26 28 30 0 2 4 6 8 10 12 14 16 18 20 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 12 RFFM7600 Performance Plots Gain (dB) versus POUT (dBm) - 40° C VCC = 5VDC VREG = 2.85VDC Gain (dB) versus POUT (dBm) 25° C VCC = 5VDC VREG = 2.85VDC 40.0 40.0 2500MHz 2570MHz 38.0 38.0 2620MHz 2700MHz 36.0 2500MHz 34.0 Gain (dB) Gain (dB) 36.0 2570MHz 2620MHz 34.0 32.0 2700MHz 32.0 30.0 30.0 28.0 28.0 26.0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 0 2 4 6 8 10 Output Power (dBm) 14 16 18 20 22 24 26 28 30 24 26 28 30 24 26 28 30 Output Power (dBm) Gain (dB) versus POUT (dBm) 85° C VCC = 5VDC VREG = 2.85VDC Power Detect (V) versus POUT (dBm) - 40° C VCC = 5VDC VREG = 2.85VDC 2.0 40.0 2500MHz 2500MHz 1.8 2570MHz 38.0 2620MHz 2570MHz 2620MHz 1.6 2700MHz 36.0 2700MHz 1.4 1.2 34.0 PDET (V) Gain (dB) 12 32.0 1.0 0.8 0.6 30.0 0.4 28.0 0.2 0.0 26.0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 0 30 2 4 6 8 10 Output Power (dBm) 14 16 18 20 22 Output Power (dBm) Power Detect (V) versus POUT (dBm) 25° C VCC = 5VDC VREG = 2.85VDC Power Detect (V) versus POUT (dBm) 85° C VCC = 5VDC VREG = 2.85VDC 2.0 2.0 1.8 2500MHz 1.6 2620MHz 2570MHz 1.8 2500MHz 1.6 2620MHz 2570MHz 2700MHz 2700MHz 1.4 1.4 1.2 1.2 PDET (V) PDET (V) 12 1.0 1.0 0.8 0.8 0.6 0.6 0.4 0.4 0.2 0.2 0.0 0.0 0 2 4 6 8 10 12 14 16 18 Output Power (dBm) 12 of 12 20 22 24 26 28 30 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 [email protected]. DS120427