RFSA2614 RFSA2614Parallel Controlled Digital Step Attenuator 50MHz to 4000MHz, 6Bit, 0.5dB LSB PARALLEL CONTROLLED DIGITAL STEP ATTENUATOR 50MHz TO 4000MHz, 6-BIT, 0.5dB N/C 1 Vcc 2 N/C 3 6 Bits, 31.5dB Range, 0.5dB Step RF1 4 High Linearity, IIP3 >49dBm N/C 3V and 5V Logic Compatible N/C On-chip Parallel Decoder Parallel Programming Interface C2 C4 C8 C16 19 N/C 17 N/C 16 N/C 15 RF2 5 14 N/C 6 13 ACG6 Logic Cir cuit 8 9 10 11 12 N/C 7 ACG5 6 Bit DSA Single Supply, 3V to 5V Operation Functional Block Diagram Product Description Transceiver RF and IF Applications Cellular, PCS, GSM, UMTS, LTE, WiMax/WiFi Wireless Data, Satellite Terminals 20 18 On-chip ESD Protection >500V HBM Applications 21 ACG4 22 ACG3 Frequency Range 50MHz to 4000MHz 23 ACG2 24 ACG1 Features C1 C0.5 Package: QFN, 24-Pin, 4mm x 4mm The RFSA2614 is a 6-bit digital step attenuator (DSA) that features high linearity over the entire 31.5dB gain control range with excellent step accuracy in 0.5dB steps. The parallel-controlled RFSA2614 has an on-chip decoder that is both 3V and 5V compatible. It also offers a rugged Class 1B HBM ESD rating via on-chip ESD circuitry. Test Equipment Ordering Information RFSA2614SR RFSA2614SQ RFSA2614TR7 RFSA2614TR13 RFSA2614PCK-410 7” Reel with 100 pieces Sample bag with 25 pieces 7” Reel with 750 pieces 13” Reel with 2500 pieces 50MHz to 4000MHz PCBA with 5-piece sample 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. DS120706 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 1 of 9 RFSA2614 Absolute Maximum Ratings Parameter Rating Unit Supply Voltage 5.5 VDC DC Supply Current 15 mA DC Power Dissipation 83 mW Max RF Input Power 27 dBm Operating Temperature (TCASE) -40 to +85 °C Storage Temperature -40 to +150 °C Junction Temperature 150 °C ESD Rating (HBM) Frequency Range 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. Class 1B Moisture Sensitivity Level Parameter 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. MSL1 Min. Specification Typ. 50 Insertion Loss Max. 4000 1.6 1.9 1.7 2.1 2.2 2.8 2.8 Gain Control Range Unit Condition MHz dB 500MHz, 0dB attenuation dB 850MHz, 0dB attenuation dB 2140MHz, 0dB attenuation dB 2700MHz, 0dB attenuation dB 3800MHz, 0dB attenuation 0.5dB step size 31.5 dB ±(0.15 + 5.0% attenuation setting) dB IIP3 >49 dBm IIP3 >45 dBm 700MHz to 2700MHz, states 28 thru 31.5dB Input P1dB >27 dBm 700MHz to 2700MHz, all states Return Loss >18 dB 700MHz to 2700MHz, all states 6 bit Parallel interface Settling Time 200 ns tRISE, tFALL (10%/90% RF) Switching Speed 200 ns tON, tOFF (50% CTL to 10%/90% RF) V Typical performance based on 5V opreation. Step Accuracy Control Interface Supply Voltage (VDD) 3.0 Supply Current Control Voltage (VCTL) 5.0 5.25 3.5 700MHz to 2700MHz, states 0 thru 27.5dB mA 0 0.8 V Low 2.0 VDD V High Notes: 1. VDD = 5V, VCTL = 3V, T = 25°C 2. Broadband Application Circuit (with ACG capacitors) 3. IIP3 measured with 1MHz spacing, PIN = 4dBm/tone for frequency < 300MHz, PIN = 10dBm/tone for frequency > 300MHz 2 of 9 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. DS120706 RFSA2614 Typical Broadband Application Circuit Performance (with ACG capacitors) Gain versus Frequency, Reference State (0dB) Normalized Attenuation, Major States 0.0 0.0 85C -0.5 -5.0 25C -40C -10.0 -1.5 S21 (dB) S21 (dB) -1.0 -2.0 -15.0 0.5dB 2dB 8dB 31.5dB -20.0 -2.5 -25.0 -3.0 -30.0 -3.5 -4.0 -35.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0.0 4.0 0.5 1.0 Frequency (GHz) 1.5 2.0 2.5 3.0 3.5 4.0 3.5 4.0 Frequency (GHz) RF1 RL versus Frequency, Major States RF2 RL versus Frequency, Major States 0 0 0dB 0.5dB 0dB 0.5dB 1dB 2dB 1dB 2dB 4dB 8dB 4dB 8dB 16dB 31.5dB 16dB 31.5dB -5 -5 -10 S22 (dB) -10 S11 (dB) 1dB 4dB 16dB -15 -15 -20 -20 -25 -25 -30 -30 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0.0 0.5 1.0 Frequency (GHz) 1.5 2.0 2.5 3.0 Frequency (GHz) Input IP3 versus Frequency, All States, 25C Relative Phase, Major States 60 60 0.5dB 2dB 8dB 31.5dB 50 55 30 IIP3 (dBm) S21 (dB) 40 1dB 4dB 16dB 20 10 50 45 States 28 thru 31.5dB 0 40 -10 -20 35 0.0 0.5 1.0 1.5 2.0 Frequency (GHz) DS120706 2.5 3.0 3.5 4.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Frequency (GHz) 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 3 of 9 RFSA2614 Typical Broadband Application Circuit Performance (with and without ACG capacitors) Worst Case Step Error between Successive States (w/ACG caps) Worst Case Step Error between Successive States (no ACG caps) 2.0 1.5 1.5 1.0 1.0 0.5 0.5 Step Error (dB) Step Error (dB) 2.0 0.0 -0.5 0.0 -0.5 -1.0 -1.0 -1.5 -1.5 -2.0 -2.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0.0 0.5 1.0 Frequency (GHz) 2.0 1.5 1.5 1.0 1.0 0.5 0.5 Step Error (dB) Step Error (dB) 2.0 0.0 -0.5 2.5 3.0 3.5 4.0 0.0 -0.5 -1.0 -1.0 -1.5 -1.5 -2.0 -2.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0.0 0.5 1.0 Frequency (GHz) 2.0 1.5 1.5 1.0 0.5 Step Error (dB) 1.0 0.5 0.0 -0.5 -1.0 -1.5 150 MHz 850 MHz 1 GHz 2 GHz 2.7 GHz 3.3 GHz 3.8 GHz 2.0 2.5 3.0 3.5 4.0 Step Error versus Attenuation (no ACG caps) 2.0 450 MHz 1.5 Frequency (GHz) Step Error versus Attenuation (w/ACG caps) Step Error (dB) 2.0 Step Error versus Frequency, All States (no ACG caps) Step Error versus Frequency, All States (w/ACG caps) 0.0 -0.5 850 MHz 1 GHz 2 GHz 2.7 GHz 3.3 GHz 3.8 GHz -1.0 -1.5 -2.0 -2.0 0 4 8 12 16 20 Attenuation State (dB) 4 of 9 1.5 Frequency (GHz) 24 28 32 0 4 8 12 16 20 24 28 32 Attenuation State (dB) 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. DS120706 RFSA2614 Truth Table Control Bit Relative Gain Setting C16 C8 C4 C2 C1 C0.5 1 1 1 1 1 1 Max gain 1 1 1 1 1 0 -0.5dB 1 1 1 1 0 1 -1dB 1 1 1 0 1 1 -2dB 1 1 0 1 1 1 -4dB 1 0 1 1 1 1 -8dB 0 1 1 1 1 1 -16dB 0 0 0 0 0 0 -31.5dB Logic Voltage Levels DS120706 State Logic Low 0V to 0.8V High 2.0V to 5.0V 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 5 of 9 RFSA2614 Pin Names and Descriptions Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 EPAD 6 of 9 Name NC VDD NC RF1 NC NC ACG ACG ACG ACG ACG NC ACG NC RF2 NC NC NC D5 D4 D3 D2 D1 D0 GND Description No internal connection. EVB can be ground or no connect. Power supply. No internal connection. EVB can be ground or no connect. RF port. External DC block required. No internal connection. EVB can be ground or no connect. No internal connection. EVB can be ground or no connect. AC ground connection for operation below 500MHz. AC ground connection for operation below 500MHz. AC ground connection for operation below 500MHz. AC ground connection for operation below 500MHz. AC ground connection for operation below 500MHz. No internal connection. EVB can be ground or no connect. AC ground connection for operation below 500MHz. No internal connection. EVB can be ground or no connect. RF port. External DC block required. No internal connection. EVB can be ground or no connect. No internal connection. EVB can be ground or no connect. No internal connection. EVB can be ground or no connect. 16dB control bit. 8dB control bit. 4dB control bit. 2dB control bit. 1dB control bit. 0.5dB control bit. DC and RF ground. Must be soldered to EVB ground plane over a bed of vias for thermal and RF performance. 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. DS120706 RFSA2614 Evaluation Board Assembly Drawing 6 DS120706 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 7 of 9 RFSA2614 Evaluation Board Schematic (with ACG capacitors) C19 J100 SMA C20 1 2 1 2 J99 SMA GND GND C4/CLK C4 C2/LE C3 GND C5 C025 GND P1 C8/PUP C2 C1 GND VDD GND C025 C05/DATA C1 C2/LE C4/CLK C8/PUP C16 GND C05/DATA C6 C16 C1 R3 R2 R1 R5 R4 GND R6 GND C025 C4/CLK C1 1 2 3 4 5 6 7 8 9 C05/DATA GND C8/PUP C16 CON9 C9 C2/LE 1 2 3 4 5 6 7 8 9 10 11 GND GND/NC GND C14 GND C17 RTS# CB1 VIO VCC RXD RST RI# 3V3 GND CB3 DSR# PU1 DCD# PU2 CTS# VCC CB4 USB CB2 SLD 24 23 22 21 20 19 18 17 16 15 14 13 NC 18 17 16 GND C12 1 15 14 GND J2 RF2 2 RF2 GND/NC NC CB0 C16 19 20 C8 C4 21 22 C2 C1 RF1 GND/NC 6 GND/NC GND/NC 5 GND/NC 7 GND GND C18 GND DTR# 13 GND C13 12 2 4 GND/NC GND/NC 1 VDD 11 GND C11 J1 RF1 3 GND/NC GND/NC GND TXD UM232R C0.25 10 2 GND/NC 1 9 GND C7 GND/NC C8 U1 C0.5 R8 VDD 24 R7 8 GND 23 12 P2 GND C15 GND GND C16 GND 8 of 9 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. DS120706 RFSA2614 Evaluation Board Bill of Materials Description Reference Designator RFSA2714 Evaluation Board 6-Bit SA Parallel 0.5dB QFN 4x4 CAP, 680pF, 10%, 50V, X7R, 0402 CAP, 1000pF, 10%, 50V, X7R, 0402 CAP, 470pF, 10%, 50V, X7R, 0402 RES, 0Ω, 0402 CONN, SMA, END LNCH, UNIV, HYB MNT, FLT Manufacturer Manufacturer's P/N PCB itself Dynamic Details (DDI) Toronto SA2714410(A) U1 RFMD RFSA2614SB C13, C15-C17 Murata Electronics N. America GRM155R71H681KA01E C7 Taiyo Yuden (USA), Inc. RM UMK105BJ102KV-F C11-C12 Murata Electronics GRM155R71H471KA01E R1-R6, R8 Kamaya, Inc RMC1/16SJPTH J1-J2, J99-J100 Molex SD-73251-4000 CONN, HDR, ST, PLRZD, 9-PIN P1 ITW Pancon MPSS100-9-C CONN, SKT, 24-PIN DIP, .600", T/H P2 Aries Electronics Inc. 24-6518-10 M1 (See Note Below) Future Technology Devices Int'l UM232R C1-C6, C8-C9, C14, C18-C20, R7 NA NA MOD, USB TO SERIAL UART, SSOP-28 DNP Note: M1 should be mounted into P2 with respect to the Pin 1 alignment of M1 and P2 Package Drawing PIN 1 DOT BY MARKING 2 .7 00± 0.050 Exp.DAP 4.00 0±0 .050 PIN #1 IDEN TIFIC ATION C HAMFER 0.300 X 4 5° 0.40 0±0 .050 4 .0 00± 0.050 SA2614 YYWW Trace Code 0 .5 00 Bsc 2.70 0±0 .0 50 Exp .D AP 0.25 0±0 .0 50 2.500 R ef. TOP VIEW BOTTOM VIEW .850 ±0.05 0 0 .0 00-.05 0 .20 3 Ref. SIDE VIEW YYWW = Date Code, where YY=year, WW=week Trace Code to be assigned by assembly SubCon DS120706 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or [email protected]. 9 of 9