RFSA2534 RFSA2534 50MHz to 4000MHz, Digital Step Attenuator GND GND GND GND GND GND RFMD’s RFSA2534 is a 5-bit digital step attenuator (DSA) that features high linearity over the entire 15.5dB gain control range with 0.5dB steps. The RFSA2534 uses serial control interface. It has a low insertion loss of 1.3dB at 2GHz. Patent pending circuit architecture provides Overshoot-free transient switching performance The RFSA2534 is available in a 4.2mm x 4.2mm laminate package that is footprint compatible with a 4mm x 4mm QFN 24 lead package. N/C Package: QFN, 24-pin, 4.2mm x 4.2mm x 0.95mm Features ■ 5-Bit, 15.5dB Range, 0.5dB Step ■ Frequency Range 50MHz to 4000MHz ■ Overshoot-free Transient Switching Performance ■ High Linearity, Input IP3 = 55dBm ■ Insertion Loss = 1.3dB at 2GHz ■ Serial Control Interface ■ Fast Switching Speed = 200ns ■ Single Supply 3V to 5V Operation N/C RFOUT Applications N/C N/C ■ 2G through 4G Base Stations N/C N/C ■ Point-to-Point D/C VDD ■ WiMax/WiFi ■ Test Equipment RFIN SPI N/C N/C SI N/C LE D/C CLK N/C Functional Block Diagram Ordering Information RFSA2534SQ Sample bag with 25 pieces RFSA2534SR 7" Reel with 100 pieces RFSA2534TR13 13" Reel with 2500 pieces RFSA2534PCK-410 50MHz to 4000MHz PCBA with 5-piece sample 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]. ® DS150626 ® 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 12 Absolute Maximum Ratings Parameter Rating Unit Supply Voltage (VDD) -0.5 to +6.0 V All Other DC and Logic Pins -0.5 to +6.0 V +30 dBm Maximum Input Power at RFIN Pins Maximum Input Power at RFOUT Pins +27 dBm -40 to +150 °C ESD Rating - Human Body Model (HBM) 1000 V Moisture Sensitivity Level MSL3 Storage Temperature Range Recommended Operating Condition Parameter Specification Min Operating Temperature Range (RF Input Power handling Derates Above 85°C -40 Operating Junction Temperature Supply Voltage 1 2.7 Typ Unit 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. Max +105 °C 125 °C 5.5 V Note 1: Device performance is constant over this range, LDO on chip Nominal Operating Parameters Specification Parameter Unit Min Typ Condition Max General Performance Supply Current Thermal Resistance 230 µA 78 °C/W RF Input Power at RFIN Pin 27 dBm 4000 MHz Steady state operation, current draw during attenuation state transitions is higher Continuous operation at +85°C case temperature RF Performance Frequency Range 50 Insertion Loss 1.3 dB 2000MHz, 0dB attenuation Attenuation Range 15.5 dB 0.5dB step size ± (0.2 + 4%) dB Input IP3 52 dBm Input P0.1dB 30 dBm Return Loss 15 dB 50MHz to 4000MHz, RFin and RFout pins, all attenuation states Return Loss 18 dB 700MHz to 2300MHz, RFin and RFout pins, all attenuation states Return Loss 22 Input and Output Impedance 50 Absolute Attenuation Error 2300MHz to 2700MHz, RFin and RFout pins, all attenuation states Ω 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]. ® DS150626 ® 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. 2 of 12 RFSA2534 Specification Parameter Unit Min Switching Speed Successive Step Phase Delta Typ Condition Max 200 nsec 50% control to 10% / 90% RF 3 Deg 2000MHz Control Digital Logic Low Digital Logic High 2.0 0.8 V VDD V Note: Typical performance at these conditions: Temp = +25°C, 2000MHz, 5V Supply Voltage 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]. DS150626 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 12 RFSA2534 Typical Performance: T = 25°C, VDD = 5V unless otherwise noted 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]. DS150626 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 12 RFSA2534 Typical Performance: T = 25°C, VDD = 5V unless otherwise noted 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]. DS150626 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 12 RFSA2534 Evaluation Board Schematic 50MHz to 4000MHz Application Circuit Evaluation Board Bill of Materials (BOM) 50MHz to 4000MHz Application Circuit Description Reference Designator Manufacturer Manufacturer's P/N Performance Micro International Pt RFSA2534-410(B) U1 RFMD RFSA2534 C1-C2 Taiyo Yuden (USA), Inc. RM UMK105 CG101JV-F CAP, 10000pF, 10%, 16V, X7R, 0402 C3 Taiyo Yuden (USA), Inc. RM EMK105 BJ103KV-F CONN, SMA, END LNCH, UNIV, HYB MNT, FLT J1-J2 Heilind Electronics PER MAT-21-1038 CONN, HDR, ST, PLRZD, 5-PIN, 0.100” P1 AMP 640454-5 CONN, SKT, 24-PIN DIP, 0.600”, T/H P2 Aries Electronics Inc. 24-6518-10 Evaluation Board RFSA2534 Module CAP, 100pF, 5%, 50V, C0G, 0402 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]. DS150626 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 12 RFSA2534 Evaluation Board Assembly Drawing 50MHz to 4000MHz Application Circuit 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]. DS150626 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 12 RFSA2534 Serial Attenuation Word Truth Table Attenuation Word Attenuation State D0.5 D1 D2 D4 D8 H H H H H 0dB / Reference Insertion Loss L H H H H 0.5dB H L H H H 1dB H H L H H 2dB H H H L H 4dB H H H H L 8dB L L L L L 15.5dB max attenuation Timing Diagram CLK DATA LSB D0.5 D1 D2 D4 MSB D8 LE 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]. DS150626 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 12 RFSA2534 Timing Specifications t6 t1 t2 t4 t3 t8 t5 CLK DATA t7 LE t9 DOUT t10 Timing Diagram Specifications Parameter Limit Unit Comment t1 25 MHz, max CLK Frequency t2 20 ns min CLK High t3 20 ns min CLK Low t4 5 ns min DATA to CLK Setup Time t5 5 ns min DATA to CLK Hold Time t6 30 ns min DATA Valid t7 5 ns min LE to CLK Setup Time t8 5 ns min CLK to LE Setup Time t9 10 ns min LE Pulse Width t10 20 ns max Output Set 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]. DS150626 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. 9 of 12 RFSA2534 Pin Names and Descriptions Pin Name Description 1 NC 2 RFIN 3 NC No Connect 4 DC Don’t Care: This pin is open inside the package 5 NC No Connect 6 NC No Connect 7 DC Don’t Care: This pin is open inside the package 8 CLK Serial Clock Input 9 LE Latch Enable: The leading edge of signal on LE causes the attenuator to change state 10 NC No Connect 11 SI Serial Data Input 12 NC No Connect 13 NC No Connect 14 VDD 15 NC No Connect 16 NC No Connect 17 RFOUT 18 NC 19 GND Ground this pin on the PCB 20 GND Ground this pin on the PCB 21 GND Ground this pin on the PCB 22 GND Ground this pin on the PCB 23 GND Ground this pin on the PCB 24 GND Ground this pin on the PCB No Connect RF Input: Incident RF power must enter this pin for rated thermal performance and reliability. Do not apply DC power to this pin. Pin may be DC grounded externally and is grounded thru resistors internal to the part. Supply for DSA and logic circuitry RF Output: Incident RF power must enter this pin for rated thermal performance and reliability. Do not apply DC power to this pin. Pin may be DC grounded externally and is grounded thru resistors internal to the part. No Connect 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]. DS150626 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. 10 of 12 RFSA2534 Package Outline and Branding Drawing (Dimensions in millimeters) 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]. DS150626 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. 11 of 12 RFSA2534 Branding 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]. DS150626 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. 12 of 12