RFSA2714

RFSA2714 RFSA2714Parallel Controlled Digital Step Attenuator, 50MHz to 4000MHz Parallel Controlled Digital Step Attenuator, 50MHz to 4000MHz C1 C2 C4 C8 C16 20 19 16 N/C 15 RF2 5 14 N/C 6 13 N/C „ High Linearity, IP3 >50dBm N/C „ 3V and 5V Logic Compatible N/C „ On-chip Parallel Decoder „ Parallel Programming Interface „ On-chip ESD Protection >500V HBM „ Single Supply, 3V to 5V Operation 7 Bit DSA ACG1 7 8 9 10 11 12 N/C 4 ACG5 RF1 ACG4 7-Bit, 31.75dB Range, 0.25dB Step ACG3 3 Logic Circuit ACG2 N/C Applications 21 N/C 2 „ 22 17 VDD Frequency Range 50MHz to 4000MHz 23 N/C 1 „ 24 18 C0.25 Features C0.5 Package: QFN, 24-Pin, 4.2mm x 4.2mm Functional Block Diagram Product Description „ Transceiver IF Applications „ Cellular, PCS, GSM, UMTS, LTE, „ WiMax/WiFi „ Wireless Data, Satellite Terminals „ Test Equipment RFMD's RFSA2714 is a 7-bit digital step attenuator (DSA) that features high linearity over the entire 31.75dB gain control range with excellent step accuracy in 0.25dB steps. The parallel-controlled RFSA2714 has an on-chip decoder that is both 3V and 5V compatible. The RFSA2714 also offers a rugged Class 1B HBM ESD rating via on-chip ESD circuitry. Ordering Information RFSA2714SR RFSA2714SQ RFSA2714TR13 RFSA2714PCK-410 7” Sample reel with 100 pieces Sample bag with 25 pieces 13” Reel with 2500 pieces 50MHz to 4GHz PCBA with 5-piece sample bag 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. DS130211 7628 Thorndike Road, Greensboro, NC 21127409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or customerser- 1 of 9 RFSA2714 Absolute Maximum Ratings Parameter Rating Supply Voltage Unit +5.5 V DC Supply Current 15 mA 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 MSL1 Min. Specification Typ. 50 Insertion Loss Max. 4000 Unit Condition MHz 0.85 dB 150MHz, 0dB attenuation 1.1 dB 850MHz, 0dB attenuation 1.7 dB 2700MHz, 0dB attenuation 2.1 dB 3800MHz, 0dB attenuation 31.75 dB 0.25dB step size ±(0.1 + 5% attenuation setting) dB Gain Control Range Step Accuracy 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. 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. Input IP3 50 dBm 100MHz to 4000MHz Input P0.1dB 25 dBm 1000MHz 15 dB Return Loss Control Interface 7-bit, Parallel DC to 3000MHz, all states Parallel Interface Settling Time 200 ns tRISE, tFALL (10%/90% RF) Switching Speed 200 ns tON, tOFF (50% CTL to 10%/90% RF) Supply Voltage (VDD) Supply Current Control Voltage (VCTL) 4.75 5.0 5.25 V 7.5 mA Low, VCTL = 0 to 0.8 High, VCTL = 2.0 to VDD V Notes: 1. VDD = 5V, VCTL= 5V, T = 25°C. 2. Broadband Application Circuit (with ACG caps). 3. IIP3 measured with PIN = +10dBm/tone, 1MHz spacing. 2 of 9 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com. DS130211 RFSA2714 Typical Performance: Broadband Application Circuit (25°C) DS130211 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com. 3 of 9 RFSA2714 Typical Performance: Broadband Application Circuit (25°C) 4 of 9 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com. DS130211 RFSA2714 Truth Table Control Bit C16 C8 C4 C2 C1 C0.5 C0.25 Relative Gain Setting 1 1 1 1 1 1 1 Max gain 1 1 1 1 1 1 0 -0.25dB 1 1 1 1 1 0 1 -0.5dB 1 1 1 1 0 1 1 -1dB 1 1 1 0 1 1 1 -2dB 1 1 0 1 1 1 1 -4dB 1 0 1 1 1 1 1 -8dB 0 1 1 1 1 1 1 -16dB 0 0 0 0 0 0 0 -31.75dB Note: C0.25 = D0, C0.5 = D1, …, C16 = D6 (for the purpose of the example below) Logic Voltage Levels DS130211 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 customerservice@rfmd.com. 5 of 9 RFSA2714 Pin Names and Description 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 C0.25 VDD NC RF1 NC NC ACG ACG ACG ACG ACG NC NC NC RF2 NC NC NC C16 C8 C4 C2 C1 C0.5 GND Description 0.25dB Control Bit. 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. No Internal Connection. EVB can be ground or no connect. 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 customerservice@rfmd.com. DS130211 RFSA2714 C8 R8 U1 R3 C2/LE C16 C8/PUP C4/CLK C1 R1 C3 C2 R2 C16 C8/PUP C2/LE C1 R6 R5 C7 C5 C4 J2 RF2 C12 C13 C11 C17 C14 C16 C15 C18 Trace width should be 17.25mils Board Edge C6 Board Edge Trace width should be 17.25mils R7 C9 J1 RF1 GND C05/DATA C1 C4/CLK C025 P2 R4 C025 C05/DATA P1 GND VDD Evaluation Board Assembly Drawing SA2714410(A) J100 Board Edge C20 Board Edge DS130211 C19 Trace width should be 17.25mils Trace width should be 17.25mils J99 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com. 7 of 9 RFSA2714 Evaluation Board Schematic 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 19 GND/NC GND/NC 7 GND GND C17 CB1 VIO VCC RXD RST RI# 3V3 GND CB3 DSR# PU1 DCD# PU2 CTS# VCC CB4 USB CB2 SLD 23 22 21 20 19 18 17 16 15 14 13 NC 18 17 16 GND C12 1 15 14 GND 13 J2 RF2 GND C13 GND C14 RTS# 24 2 RF2 NC CB0 C16 20 C8 21 C4 22 C2 23 RF1 GND/NC 6 GND DTR# 12 5 GND/NC GND/NC GND C18 GND/NC 11 2 4 GND/NC GND/NC 1 VDD 10 GND C11 J1 RF1 3 GND/NC GND/NC GND TXD UM232R C0.25 9 2 C1 C0.5 1 GND/NC GND C7 8 C8 U1 GND/NC R7 R8 VDD 24 12 GND P2 GND C15 GND GND C16 GND Evaluation Board Bill of Materials (BOM) Description Reference Designator SA2714410(A) Digital Step Attenuator 50MHz to 4000MHz CAP, 1000pF, 10%, 50V, X7R, 0402 Manufacturer Manufacturer’s P/N Dynamic Details (DDI) Toronto SA2714410(A) U1 RFMD RFSA2714SB C7 Taiyo Yuden (USA), Inc. RM UMK105BJ102KV-F CAP, 470pF, 10%, 50V, X7R, 0402 C11-C12 Murata Electronics GRM155R71H471KA01E CAP, 680pF, 5%, 50V, C0G, 0402 C14, C15, C16 Murata Electronics GRM1555C1H681JA01D RES, 0, 0402 CONN, SMA, END LNCH, UNIV, HYB MNT, FLT CONN, HDR, ST, PLRZD, 9-PIN CONN, SKT, 24-PIN DIP, .600", T/H MOD, USB TO SERIAL UART, SSOP-28 DNP R1-R8 Kamaya, Inc RMC1/16SJPTH J1-J2, J99-J100 Molex SD-73251-4000 P1 ITW Pancon MPSS100-9-C P2 Aries Electronics Inc. 24-6518-10 M1 (See Note Below) Future Technology Devices Int'l UM232R C1-C6, C8-C9, C13, C17-C20 NA NA Note: M1 should be mounted into P2 with respect to the Pin 1 alignment of M1 and P2 8 of 9 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com. DS130211 RFSA2714 Branding Drawing 4.000 SA2714 YYWW Trace 4.000 Pin 1 Indicator Fill in the YYWW Notation with the Date Code YY = Year WW = Week Trace to be assigned by SubCon Package Drawing DS130211 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com. 9 of 9