RFFM8550 4.9GHz to 5.85GHz 802.11a/n/ac WiFi Switch + LNA Module The RFFM8550 provides a complete integrated switch + LNA solution in a single Front End Module (FEM) for WiFi 802.11a/n/ac systems. The ultra-small form factor and integrated matching greatly reduces the number of external components and layout area in the customer applications. This simplifies the total front end solution by reducing the bill of materials, system footprint, and manufacturing cost. The RFFM8550 integrates a Single Pole Two Throw (SP2T) Transmit/Receive (T/R) Switch and a 5.0GHz Low Noise Amplifier (LNA) with bypass mode. The device is provided in a 1.5mm x 1.5mm x 0.40mm 8-pin DFN package. RFFM8550 Package: DFN, 8-pin, 1.5mm x 1.5mm x 0.40mm Features ■ SP2T T/R Switch ■ LNA with Bypass Mode ■ Input and Output Matched to 50Ω ■ Wide Voltage Supply Range ■ Supports WiFi chipsets with Integrated Power Amplifier (iPA) ■ Low Profile Package for Module Designs Applications TX ANT 1 8 VRX 2 7 N/C VTX 3 6 RX VDD 4 5 LNAEN ■ Cellular Handsets ■ Mobile Devices ■ Tablets ■ Consumer Electronics ■ Gaming ■ Netbooks/Notebooks ■ TV/Monitors/Video Functional Block Diagram Ordering Information RFFM8550SB Standard 5-piece sample bag RFFM8550SQ Standard 25-piece sample bag RFFM8550SR Standard 100-piece reel RFFM8550TR7 Standard 2500-piece reel RFFM8550PCK-410 Fully assembled evaluation board w/ 5-piece bag RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421 For sales or technical support, contact RFMD at +1.336.678.5570 or [email protected]. ® DS150128 ® RF MICRO DEVICES and RFMD 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. ©2013, RF Micro Devices, Inc. 1 of 8 RFFM8550 Absolute Maximum Ratings Parameter Rating Unit DC Supply Voltage (No RF Applied) -0.5 to 6 V DC Supply Current 100 mA Operating Case Temperature -40 to +85 °C Storage Temperature -40 to +150 °C Maximum TX Input Power for 11b/g/n/ac (No Damage) +30 dBm Maximum RX Input Power (No Damage) Bypass Mode Maximum RX input power (No damage) +12 dBm +25 dBm Moisture Sensitivity Caution! ESD sensitive device. RFMD Green: RoHS status based on EU Directive 2011/65/EU (at time of this document revision), 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. 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. MSL2 Nominal Operating Parameters Specification Parameter Unit Min Typ Condition Max Compliance: 4.9GHz to 5.85GHz Only Operating Frequency 5.18 5.825 GHz Extended Frequency 4.9 5.925 GHz Operating Temperature -40 25 85 ºC Power Supply VDD 3.0 3.6 5.0 V Control Voltage-high 2.8 3.1 VCC V 0 0.24 V Control Voltage-low Transmit (TX-ANT) VDD = 3.6V, unless otherwise noted Insertion Loss 0.6 1.2 dB TX Port Return Loss 12 25 dB ANT Port Return Loss 12 25 dB Input P1dB 27 30 dBm ANT-RX Isolation 28 35 dB Receive (ANT-RX)-LNA On Gain Gain flatness over any 80MHz BW Gain flatness across band Noise Figure-Nominal VTX, VRX, and LNA_EN Should not exceed VCC voltage T = 25C°, VDD = 3.6V T = 25°C, VDD = 3.6V TX Mode-TX enabled and maximum power VDD = 3.6V, unless otherwise noted 9 12 -0.25 -1 2.5 14 dB +0.25 dB +1 dB 3 dB T = 25°C, VDD = 3.6V T = 25°C, VDD = 3.6V RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421 For sales or technical support, contact RFMD at +1.336.678.5570 or [email protected]. DS150128 The information in this publication is believed to be accurate. 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. 2 of 8 RFFM8550 Specification Parameter Unit Min Typ Condition Max Receive (ANT-RX)-LNA On (continued) VDD = 3.6V, unless otherwise noted Rx Port Return Loss 8 12 ANT Port Return Loss 8 10 dB dB Nominal Input P1dB -6 -3 dBm Current Consumption 6 10 16 mA LNAEN Control Current 140 250 µA LNA Turn On Time 400 600 nS Receive (ANT-RX)-Bypass Mode T= 25°C, VDD = 3.6V VDD = 3.6V, unless otherwise noted Insertion Loss 5 7 RX Port Return Loss 8 12 12 dB ANT Port Return Loss 8 15 dB Input P1dB 15 20 dBm T = 25°C, VDD = 3.6V dB General Specifications T = 25°C, VDD = 3.6V VDD = 3.6V, unless otherwise noted Control Line Impedance - VTX 40 MΩ Control Line Impedance LNAEN 70 kΩ MΩ Control Line Impedance - VRX 40 VDD Leakage Current 0.2 10 µA Switch Control Current – High Each Line 2 10 µA Switch Control Current – Low Each Line 0.1 1 µA Switching Speed 100 500 ns ESD – Human Body Model 1000 V ESD – Charge Device Model 1000 V T = 25°C, VDD = 3.6V RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421 For sales or technical support, contact RFMD at +1.336.678.5570 or [email protected]. DS150128 The information in this publication is believed to be accurate. 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. 3 of 8 RFFM8550 Switch Control Logic Truth Table Operating Mode VTX LNAEN VRX Standby Low Low Low 802.11a/n/ac TX Mode High Low Low 802.11a/n/ac RX Gain Low High High Low Low High 802.11a/n/ac RX Bypass Note: High = 2.8 to VCC. Low = 0V to 0.2V. Timing Diagram RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421 For sales or technical support, contact RFMD at +1.336.678.5570 or [email protected]. DS150128 The information in this publication is believed to be accurate. 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. 4 of 8 RFFM8550 Evaluation Board Schematic RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421 For sales or technical support, contact RFMD at +1.336.678.5570 or [email protected]. DS150128 The information in this publication is believed to be accurate. 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. 5 of 8 RFFM8550 Pin Out ANT 1 8 TX VRX 2 7 N/C VTX 3 6 RX VDD 4 5 LNAEN Package Drawing RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421 For sales or technical support, contact RFMD at +1.336.678.5570 or [email protected]. DS150128 The information in this publication is believed to be accurate. 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. 6 of 8 RFFM8550 PCB Patterns Note: Shaded area represents Pin 1. RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421 For sales or technical support, contact RFMD at +1.336.678.5570 or [email protected]. DS150128 The information in this publication is believed to be accurate. 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. 7 of 8 RFFM8550 Pin Names and Descriptions Pin Name Description 1 ANT RF bidirectional antenna port matched to 50Ω. An external DC block is required. 2 VRX Receive switch control pin. See switch truth table for proper voltage level. 3 VTX Control voltage for the TX switch. See truth table for proper voltage level. 4 VDD Supply voltage for the LNA. See applications schematic for bypassing components. 5 LNAEN 6 RX RF output port for the 802.11a/n/ac LNA. This port is matched to 50Ω and DC blocked internally 7 N/C This pin is not connected internally and can be left floating or connected to ground. 8 TX RF input port for the TX throw of the T/R switch. An external DC block is required Pkg Base GND Control voltage for the LNA. When this pin is set to a LOW logic state, the bypass mode is enabled. Ground connection. The backside of the package should be connected to the ground plane through a short path, i.e., PCB vias under the device are recommended. RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421 For sales or technical support, contact RFMD at +1.336.678.5570 or [email protected]. DS150128 The information in this publication is believed to be accurate. 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. 8 of 8