RFSA2534 50 MHz to 4000 MHz, Digital Step Attenuator The 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 and uses a serial control interface. It has a low insertion loss of 1.3dB at 2GHz. Patented 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. Package: MCM, 24-pin, 4.2 mm x 4.2 mm x 0.975 mm Features 5-Bit, 15.5 dB, 0.5 dB Step Patented Circuit Architecture Overshoot-free Transient Switching Performance Frequency Range 50 MHz to 4000 MHz High Linearity, IIP3 = +52 dBm Serial Control Interface Fast Switching Speed, 200 ns Typical Single Supply 3 V to 5 V Operation Applications Functional Block Diagram Ordering Information RFSA2534SQ RFSA2534SR RFSA2534TR13 RFSA2534PCK-410 Revision DS20160316 (c) 2016 Qorvo, Inc. 2G through 4G Base Stations Point-to-Point Wi-Fi Test Equipment Sample bag with 25 pieces 7" Reel with 100 pieces 13" Reel with 2500 pieces 50 MHz to 4000 MHz PCBA w/ 5-piece sample bag - 1 of 15 - Disclaimer: Subject to change without notice www.rfmd.com / www.qorvo.com RFSA2534 Absolute Maximum Ratings Rating Units Supply Voltage (VDD) Parameter -0.5 to +6.0 V All Other DC and Logic Pins ( When VDD Is Applied Prior to Any Other Pin Voltages) -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 Specification Parameter Min Operating Temperature Range (Derate RF Input Power Handling Above 85 C) Typ -40 Operating Junction Temperature Supply Voltage1 +2.7 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. Units Max +105 C +125 C +5.5 V Note 1: Device performance is constant over this range, LDO on chip Electrical Specifications Parameter Specification Min Typ Units Condition Max General Performance Supply Current 230 A Thermal Resistance 78 C/W At maximum attenuation state with RF power applied to the ATTIN pin +27 dBm Continuous operation at +85 C case temperature 4000 MHz RF Input Power at RFIN Pin Steady state operation, current draw during attenuation state transitions is higher RF Performance Frequency Range 50 Insertion Loss 1.3 dB 2000 MHz, 0 dB attenuation Attenuation Range 15.5 dB 0.5 dB step size Absolute Attenuation Error 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 dB 2300MHz to 2700MHz, RFin and RFout pins, all attenuation states Input and Output Impedance Switching Speed Successive Step Phase Delta 2 200 nsec 50% control to 10% / 90% RF 3 Deg 2000MHz Control Digital Logic Low Digital Logic High Revision DS20160316 (c) 2016 Qorvo, Inc. +0.08 +2.0 V V - 2 of 15 - Disclaimer: Subject to change without notice www.rfmd.com / www.qorvo.com RFSA2534 RF Performance Plots: T = 25C, VDD = 5V unless otherwise noted Revision DS20160316 (c) 2016 Qorvo, Inc. - 3 of 15 - Disclaimer: Subject to change without notice www.rfmd.com / www.qorvo.com RFSA2534 RF Performance Plots: T = 25C, VDD = 5V unless otherwise noted Revision DS20160316 (c) 2016 Qorvo, Inc. - 4 of 15 - Disclaimer: Subject to change without notice www.rfmd.com / www.qorvo.com RFSA2534 Evaluation Board Schematic - 50MHz to 4000MHz Application Circuit Evaluation Board Bill of Materials (BOM) Description Reference Designator Evaluation Board RFSA2534 Module CAP, 100pF, 5%, 50V, C0G, 0402 CAP, 10000pF, 10%, 16V, X7R, 0402 CONN, SMA, END LNCH, UNIV, HYB MNT, FLT 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 C3 Taiyo Yuden (USA), Inc. RM EMK105 BJ103KV-F J1-J2 Heilind Electronics 142-0751-841 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 Notes: 1. M1 should be mounted into P2 with respect to the Pin 1 alignment of M1 and P2. Revision DS20160316 (c) 2016 Qorvo, Inc. - 5 of 15 - Disclaimer: Subject to change without notice www.rfmd.com / www.qorvo.com RFSA2534 Evaluation Board Assembly Drawing - 50MHz to 4000MHz Application Circuit Revision DS20160316 (c) 2016 Qorvo, Inc. - 6 of 15 - Disclaimer: Subject to change without notice www.rfmd.com / www.qorvo.com RFSA2534 Evaluation Board Programming Using USB Interface Serial Mode Refer to the Control Bit Generator (CBG) Software Reference Manual within the CBG download for detailed instructions on how to setup the software for use. Apply the supply voltage to P1. Select RFSA2534 from the RFMD/Qorvo Parts List of the CBG user interface. Set the attenuation value using the CBG user interface. The attenuator is set to the desired state and measurements can be taken. Evaluation Board Programming Using External Bus Serial Mode This configuration allows the user to control the attenuator through the P1 connector using an external harness. Remove the USB interface board if it is currently installed on the evaluation board. Connect a user-supplied harness to the P1 connector. Send the appropriate signals onto the serial bus lines in accordance with the Serial Mode Timing Diagram. The attenuator is set to the desired state and measurements can be taken. Serial Bus Timing Specifications Serial Bus Timing Diagram Parameter Limit Units 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 Serial Mode Attenuation Word Truth Table Attenuation Word Attenuation State (dB) D0.5 D1 D2 D4 D8 H H H H H 0dB / Reference Insertion Loss L H H H H 0.5 dB H L H H H 1 dB H H L H H 2 dB H H H L H 4 dB H H H H L 8 dB L L L L L 15.5 dB Revision DS20160316 (c) 2016 Qorvo, Inc. Serial Mode Timing Diagram - 7 of 15 - Disclaimer: Subject to change without notice www.rfmd.com / www.qorvo.com RFSA2534 Pin Names and Descriptions Pin Name 1 NC Description 2 RF IN 3 NC No Internal Connection 4 NC No Internal Connection 5 NC No Internal Connection 6 NC No Internal Connection No Internal Connection 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. 7 NC No Internal Connection 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 Internal Connection 11 SI Serial Data Input 12 NC No Internal Connection 13 NC No Internal Connection 14 VDD 15 NC No Internal Connection 16 NC No Internal Connection 17 RF OUT 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 Revision DS20160316 (c) 2016 Qorvo, Inc. Supply Voltage 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 Internal Connection - 8 of 15 - Disclaimer: Subject to change without notice www.rfmd.com / www.qorvo.com RFSA2534 Package Outline (Dimensions in Millimeters) Branding Diagram (Dimensions in Millimeters) Revision DS20160316 (c) 2016 Qorvo, Inc. - 9 of 15 - Disclaimer: Subject to change without notice www.rfmd.com / www.qorvo.com RFSA2534 Contact Information For the latest specifications, additional product information, worldwide sales and distribution locations: Web: www.rfmd.com Email: customer.support@qorvo.com Tel: 1-844-890-8163 For information about the merger of RFMD and TriQuint as Qorvo: Web: www.qorvo.com Important Notice The information contained herein is believed to be reliable. RFMD and/or Qorvo make no warranties regarding the information contained herein. RFMD and/or Qorvo assumes no responsibility or liability whatsoever for any of the information contained herein. RFMD and/or Qorvo assumes no responsibility or liability whatsoever for the use of the information contained herein. The information contained herein is provided "AS IS, WHERE IS" and with all faults, and the entire risk associated with such information is entirely with the user. All information contained herein is subject to change without notice. Customers should obtain and verify the latest relevant information before placing orders for RFMD and/or Qorvo products. The information contained herein or any use of such information does not grant, explicitly or implicitly, to any party any patent rights, licenses, or any other intellectual property rights, whether with regard to such information itself or anything described by such information. RFMD and/or Qorvo products are not warranted or authorized for use as critical components in medical, life-saving, or lifesustaining applications, or other applications where a failure would reasonably be expected to cause severe personal injury or death. Revision DS20160316 (c) 2016 Qorvo, Inc. - 10 of 15 - Disclaimer: Subject to change without notice www.rfmd.com / www.qorvo.com