Digital Controlled Variable Gain Amplifier 3MHz to MHz, 6- Bit.dB LSB Control RFDA6 Digital Controlled Variable Gain Amplifier 3MHz to MHz, 6-Bit.dB LSB Control Package: MCM 8-Pin, 6.mm x 6.mm 8 7 6 3 _SPI NC Features Frequency Range 3MHz to MHz Full Internal Matching and No External Bias Inductors 6-Bit Digital Step Attenuator SPI Serial Control Programming Gain Control Range = 3.dB (.db Step Size) High OIP3/PdB = +/dbm Typical at MHz Single +V Supply Small 8-Pin, 6.mm x 6.mm, MCM Power-up Programming Applications Cellular, 3G Infrastructure WiBro, WiMax, LTE Microwave Radio High Linearity Power Control SPI_LE SPI_DATA SPI_CLK PUP RF_IN Product Description 3 6 AMP Z e AMP 7 8 _AMP 9 SPI_ CONTROL DSA 3 _AMP Functional Block Diagram 9 8 7 6 RF_OUT RFMD's RFDA6 is a digital controlled variable gain amplifier featuring high linearity over the entire gain control range. The gain of the 6-bit digital step attenuator is programmed with a serial mode control interface (SPI). The RFDA6 is packaged in a small 6.mm x 6.mm leadless laminate MCM, which contains plated through thermal vias for ultra-low thermal resistance. This module is easy to use with no external matching components required. Ordering Information RFDA6SQ Sample bag with pieces RFDA6SR 7 Reel with pieces RFDA6R7 7 Reel with 7 pieces RFDA6R3 3 Reel with pieces RFDA6PCK- 3MHz to MHz PCBA with -piece sample bag Optimum Technology Matching Applied GaAs HBT SiGe BiCMOS GaAs phemt GaN HEMT GaAs MESFET Si BiCMOS Si CMOS BiFET HBT InGaP HBT SiGe HBT Si BJT SOI 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., RF Micro Devices, Inc. of
Absolute Maximum Ratings Parameter Rating Unit Supply Voltage. V DC Supply Current 33 ma Power Dissipation 6 mw Max RF Input Power for dbm Output Load Operating Temperature (T CASE ) - to +8 C Storage Temperature - to + C Junction Temperature +7 C ESD Rating (HBM) (Class B) V Moisture Sensitivity Level MSL 3 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. 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 /9/EC, halogen free per IEC 69--, < ppm each of antimony trioxide in polymeric materials and red phosphorus as a flame retardant, and <% antimony in solder. Parameter Nominal Operating Parameters Specification Min. Typ. Max. Unit Condition Temp = C, V Overall CC = V DD = V, standard application circuit Frequency Range 3 MHz Max Gain 36 db Attenuation = db, at MHz Gain Control Range 3. db Step Accuracy ±(. +% attenuation setting) db Major state error up to MHz PdB dbm Attenuation = db, at MHz Output IP3 dbm P OUT = dbm/tone, MHz spacing at MHz Control Interface 6 bit SPI Interface Settling Time ns ton, toff (%/9% RF) Noise Figure. db Attenuation = db Impedance Input Return Loss 8 db At MHz Output Return Loss.9 db Total Supply Voltage.7.. V Supply Current 7 ma From V CC (SPI), V CC (AMP), and V CC (AMP) Thermal Resistance 73 C/W Typical RF Performance at Key Operating Frequencies Parameter Unit 3MHz MHz MHz 7MHz 8MHz 9MHz 9MHz MHz Max Small db 37. 36.8 36.3 3. 3. 33.7 33.3 3.6 Signal Gain Output PdB dbm..3..3... Output IP3* dbm....3.6.6.9 Input Return db.3 8 6.9 6 7. 7.9 8.3 Loss Output Return Loss db 9.8. 7 7.8..3 7. *Note: OIP3 is tested at P OUT = dbm/tone and MHz spacing of
Typical Performance - 3MHz to MHz Broadband Application Circuit Gain versus Frequency Max Gain versus Frequency 3 3 38 8-36 Gain (db) db db db 6dB.dB db 8dB 3.dB Gain (db) 3 3 3-8 - - Input Return Loss versus Frequency db.db db db db 8dB 6dB 3.dB - Input Return Loss versus Frequency 8 Input Return Loss (db) - - - -3-3 Input Return Loss (db) - - - - - - - - Output Return Loss versus Frequency Output Return Loss versus Frequency - - Output Return Loss (db) - - - - -3-3 db.db db db db 8dB 6dB 3.dB Output Return Loss (db) - - - - -3-3 8 - - - 3 of
Typical Performance - 3MHz to MHz Broadband Application Circuit Phase Error (db) 3 3 Normalized Phase Error versus Frequency db.db db db db 8dB 6dB 3.dB Bit Errror (db).6.. -. -. Bit Error versus Frequency db.db db db db 8dB 6dB 3.dB -.6 -.8 Normalized Attenuation P- versus Frequency. - - Attenuation (db) - - - -3 db.db db db db 8dB 6dB 3.dB P- (db). 3. 8 - -3 3.3..6.8.9. Output IP3 versus Frequency Per Tone +dbm Noise Figure versus Frequency 8.6 6.. Output IP3 (db) 38 8 36-3.3..6.8.9. Noise Figure (db).3.. 3.9 3.8 3.7 3.6 8 3..3...6.7.8.9. of
Control Bit Truth Table D D D3 D D D Gain Relative to Max Gain db -.db -db -db -db -8dB -6dB -3.dB Serial Port Interface: SPI Timing Diagram t t6 t t t t3 t8 CLK DATA LE DOUT t7 t9 t SPI Timing Diagram Specifications Parameter Limit Unit Comment t MHz max CLK Frequency t ns min CLK High t3 ns min CLK Low t ns min DATA to CLK Setup Time t ns min DATA to CLK Hold Time t6 3 ns min DATA Valid t7 ns min LE to CLK Setup Time t8 ns min CLK to LE Setup Time t9 ns min LE Pulse Width t ns max Output Set of
Programming Example - 6-Bit CLK DATA MSB D LSB D D3 D D D LE Control Voltage Table Power-up Programming Truth Table State Logic PUP Attenuator Setting Low V to.8v Low Attenuation at Max, 3.dB High.V to.v High Attenuation at Min, db 6 of
Pin Names and Description Pin Function Description SPI_LE Serial Latch Enable Input SPI_DATA Serial Data Input 3 SPI_CLK Serial Clock Input PUP Power-up Programming Pin RF/DC Ground Connection 6 RF_IN RF Input 7 RF/DC Ground Connection 8 _AMP Supply Voltage for Amplifier 9 RF/DC Ground Connection RF/DC Ground Connection RF/DC Ground Connection RF/DC Ground Connection 3 RF/DC Ground Connection _AMP Supply Voltage for Amplifier RF/DC Ground Connection 6 RF_OUT RF Output 7 RF/DC Ground Connection 8 RF/DC Ground Connection 9 RF/DC Ground Connection RF/DC Ground Connection RF/DC Ground Connection NC Do Not Connect, Leave Open Circuit 3 RF/DC Ground Connection RF/DC Ground Connection RF/DC Ground Connection 6 RF/DC Ground Connection 7 RF/DC Ground Connection 8 _SPI Supply Voltage for SPI and DSA Chip 7 of
Package Drawing: 6.mm x 6.mm Laminate Module Evaluation Board Assembly Drawing 8 of
Evaluation Board Schematic 3MHz to MHz Application Circuit C9 + C C.uF R ohm PUP R6 CLK DATA LE 3 6 7 8 9 P TXD DTR# RTS# VIO RXD RI# DSR# DCD# CTS# CB CB CB CB RST 3V3 CB3 PU PU USB SLD 3 9 8 7 6 3 LE DATA CLK PUP R K R J RFIN C RN 8 6 ohm 7 3 C7 33pF 3 6 7 SPI_LE SPI_DATA SPI_CLK PUP RFIN 8 DSA_ 7 6 3 NC RFOUT 9 8 7 6 UM3R L C8 33pF J RFOUT VAMP VAMP PUP CLK DATA LE P 3 6 HDR_X6 R ohm + C C C6.uF 8 9 3 9 C.uF C + R3 ohm C3 Evaluation Board Bill of Materials (BOM) 3MHz to MHz Application Circuit Description Reference Designator Manufacturer Manufacturer's P/N RFDA6, 6 x 6sq.mm, 8-Pin Laminate U RFMD RFDA6 RFDA6-(B) Viasystems RFDA6-(B) CONN, SMA, END LNCH, FLT,.6" J-J Emerson Network Power -7-8 CAP,.µF, %, V, X7R, C, C6, C Murata Electronics GRMR7CKA88D CAP, 33pF, %, V, X7R, C7-C8 Murata Electronics GRMR7H33KAE RES, K, %, /6W, 63 R Panasonic Industrial Co. ERJ-3GEYJ RES ARRAY, -ELEM, K, %, SMD X RN KOA CNEKTTDJ CONN, HDR, ST, PLRZD, 6-PIN,." P ITW Pancon MPSS-6-C CONN, SKT, -PIN DIP,.6", T/H P Aries Electronics Inc. -68- RES, Ω, 63 R, R3, R Kamaya, Inc RMC/6JPTP C-C, C9-C, R, L N/A N/A 9 of
Branding Diagram DA 6 Trace Code Pin Indicator Trace Code to be assigned by SubCon of
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