Typical Applications Features General Description

1 ATTENUATORS - DIGITAL - dB LSB GaAs MMIC 6-BIT DIGITALPOSITIVE CONTROL ATTENUATOR, DC - GHzFor price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, Box 9106, Norwood, MA 02062-9106 Phone: 781-329-4700 Order online at Support: Phone: 1-800-ANALOG-DInformation furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Functional DiagramElectrical Specifications,TA = +25 C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted) The HMC472 ALP4E is ideal for: 3G Infrastructure & access points Cellular/3G, LTE & UMB WiMAX, WiBN & Fixed Wireless Test Equipment and Sensors GSM, WCDMA & dB LSB Steps to dBSingle Control Line Per BitTTL/CMOS Compatible Control dB Typical Step ErrorSingle +5V Supply24 Lead Ceramic 4x4mm SMT Package: 16mm The HMC472 ALP4E are broadband 6-bit GaAs IC digital attenuators in low cost leadless surface mount packages.

2 This single positive control line per bit digital attenuator incorporates off chip AC ground capacitors for near DC operation, making it suit-able for a wide variety of RF and IF Applications . Covering DC to GHz, the insertion loss is less than dB Typical . The attenuator bit values are (LSB), 1, 2, 4, 8, and 16 dB for a total attenuation of dB. Attenuation accuracy is excellent at dB Typical step error with an IIP3 of +54 dBm. Six TTL/CMOS control inputs are used to select each attenua-tion state. A single Vdd bias of +5V is required. ParameterFrequency (GHz) LossDC - - - RangeDC - Loss (RF1 & RF2, All Atten. States)DC - GHz20dBAttenuation Accuracy: (Referenced to Insertion Loss)All Attenuation - dB - dB StatesAll Attenuation StatesAll Attenuation StatesDC - - - - - GHz ( + 3% of Atten.)

3 Setting) Max. ( + 3% of Atten. Setting) Max. ( + 4% of Atten. Setting) Max. ( + 3% of Atten. Setting) Max ( + 5% of Atten. Setting) Power for dB - GHz30dBmInput Third Order Intercept Point(Two-Tone Input Power= 0 dBm Each Tone)REF - dB - dB - GHz5449dBmdBmSwitching CharacteristicstRISE, tFALL (10/90% RF)tON, tOFF (50% CTL to 10/90% RF)DC - GHz4060nsnsTypical ApplicationsFeaturesGeneral DescriptionATTENUATORS - DIGITAL - dB LSB GaAs MMIC 6-BIT DIGITALPOSITIVE CONTROL ATTENUATOR, DC - GHzFor price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, Box 9106, Norwood, MA 02062-9106 Phone: 781-329-4700 Order online at Support: Phone: 1-800-ANALOG-D- 35- 30- 25- 20- 15- ATTENUATION (dB)FREQUENCY (GHz)- 35- 30- 25- 20- 15- 35 NORMALIZED ATTENUATION (dB)FREQUENCY (GHz)- 35- 30- 25- 20- 15- LOSS (dB)FREQUENCY (GHz) dB- 35- 30- 25- 20- 15- 35 RETURN LOSS (dB)FREQUENCY (GHz) +25 C+85 C -40 CINSERTION LO SS (dB)FREQUENCY (GHz) 35+25C+85C -40 CINSERTION LO SS (dB)FREQUENCY (GHz)Return Loss RF1, RF2(Only Major States are Shown)Insertion LossNormalized Attenuation(Only Major States are Shown)Insertion LossReturn Loss RF1, RF2(Only Major States are Shown)Normalized Attenuation(Only Major States are Shown)ATTENUATORS - DIGITAL - dB LSB GaAs MMIC 6-BIT DIGITALPOSITIVE CONTROL ATTENUATOR, DC - GHzFor price, delivery, and to place orders: Analog Devices, Inc.

4 , One Technology Way, Box 9106, Norwood, MA 02062-9106 Phone: 781-329-4700 Order online at Support: Phone: 1-800-ANALOG-D-1- 0. 9- 0. 8- 0. 7- 0. 6- 0. 5- 0. 4- 0. 3- 0. 2- 0. ERROR (dB)ATTENUATION STATE (dB)50 MHz100 MHz, 300 MHz, 350 MHz200 ERROR (dB)FREQUENCY (GHz) - 4 dB8 - ERROR (dB)FREQUENCY (GHz)16 dB3 1. 5 dB8 . 35 BIT ERROR (dB)FREQUENCY (GHz) - 4, 16 dB8 dB-2- 1. 5-1- 0. ERROR (dB)ATTENUATION STAT E (dB)4 0 MHz3 GHz, G Hz5 00 M Hz , 1 GH z100 M Hz, 2 GHzBit Error vs. Frequency(Only Major States are Shown)Bit Error vs. Attenuation StateBit Error vs. Frequency without AC Ground Caps(Only Major States are Shown)Bit Error vs. Attenuation StateBit Error vs. Frequency(Only Major States are Shown)ATTENUATORS - DIGITAL - dB LSB GaAs MMIC 6-BIT DIGITALPOSITIVE CONTROL ATTENUATOR, DC - GHzFor price, delivery, and to place orders: Analog Devices, Inc.

5 , One Technology Way, Box 9106, Norwood, MA 02062-9106 Phone: 781-329-4700 Order online at Support: Phone: ERROR (dB)FREQUENCY (GHz)- 40- 200204060801 PHASE (deg)FREQUENCY (GHz)8 dB3 1. 5 d dB16 dBTruth TableControl VoltageBias Voltage & CurrentWorst Case Step ErrorBetween Successive Attenuation StatesVdd = +5V 10%Vdd(V)I d d ( Ty p.)(mA)+ + + ConditionLow0 to + Vdc @ -5 uA + to + Vdc @ 40 uA : Vdd = +5 VControl Voltage InputAttenuation StateRF1 - RF2V116 dBV28 dBV34 dBV42 dBV51 dBHighHighHighHighLowHigh1 dBHighHighHighLowHighHigh2 dBHighHighLowHighHighHigh4 dBHighLowHighHighHighHigh8 dBLowHighHighHighHighHigh16 dBAny combination of the above states will provide an attenuation approximately equal to the sum of the bits Phase vs. Frequency(Only Major States are Shown)ATTENUATORS - DIGITAL - dB LSB GaAs MMIC 6-BIT DIGITALPOSITIVE CONTROL ATTENUATOR, DC - GHzFor price, delivery, and to place orders: Analog Devices, Inc.

6 , One Technology Way, Box 9106, Norwood, MA 02062-9106 Phone: 781-329-4700 Order online at Support: Phone: 1-800-ANALOG-DAbsolute Maximum RatingsOutline DrawingRF Input Power (DC - 3 GHz)+28 dBm (T = +85 C)Control Voltage Range (V1 to V6)-1V to Vdd +1 VBias Voltage (Vdd)+7 VChannel Temperature150 CContinuous Pdiss (T = 85 C) (derate mW/ C above 85 C) WThermal Resistance116 C/WStorage Temperature-65 to +150 COperating Temperature-40 to +85 CESD Sensitivity (HBM)Class 1 ANOTES:1. LEADFRAME MATERIAL: COPPER ALLOY2. DIMENSIONS ARE IN INCHES [MILLIMETERS]3. LEAD SPACING TOLERANCE IS PAD BURR LENGTH SHALL BE MAXIMUM. PAD BURR HEIGHT SHALL BE PACKAGE WARP SHALL NOT EXCEED ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED TO PCB RF REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED L AND PAT SENSITIVE DEVICEOBSERVE HANDLING PRECAUTIONSPart NumberPackage Body MaterialLead FinishMSL RatingPackage Marking [2]HMC472 ALP4 ERoHS-compliant Low Stress Injection Molded Plastic100% matte SnMSL3 [1]H472 AXXXX[1] Max peak reflow temperature of 260 C[2] 4-Digit lot number XXXXP ackage InformationATTENUATORS - DIGITAL - dB LSB GaAs MMIC 6-BIT DIGITALPOSITIVE CONTROL ATTENUATOR, DC - GHzFor price, delivery, and to place orders: Analog Devices, Inc.

7 , One Technology Way, Box 9106, Norwood, MA 02062-9106 Phone: 781-329-4700 Order online at Support: Phone: 1-800-ANALOG-DPin DescriptionsPin NumberFunctionDescriptionInterface Schematic1, 3, 5, 12, 14, 16, 17, 18N/CThese pins should be connected to PCB RF ground to maximize , 15RF1, RF2 This pin is DC coupled and matched to 50 capacitors are required. Select value based on lowest frequency of - 11, 13 ACG1 - ACG7 External capacitors to ground are recommended for low and high frequency operation. Select value for lowest frequency of operation. Place capacitor as close to pins as possible. For operation from 700 to 2700 MHz, these pins may be left - 24V1 - V6 See truth table and control voltage bottom has an exposed metal paddle that must also be connected to RF/DC - DIGITAL - dB LSB GaAs MMIC 6-BIT DIGITALPOSITIVE CONTROL ATTENUATOR, DC - GHzFor price, delivery, and to place orders: Analog Devices, Inc.

8 , One Technology Way, Box 9106, Norwood, MA 02062-9106 Phone: 781-329-4700 Order online at Support: Phone: 1-800-ANALOG-DApplication CircuitNote: For operations from 700 to 2700 MHz, pins 6 through 13 may be left - DIGITAL - dB LSB GaAs MMIC 6-BIT DIGITALPOSITIVE CONTROL ATTENUATOR, DC - GHzFor price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, Box 9106, Norwood, MA 02062-9106 Phone: 781-329-4700 Order online at Support: Phone: 1-800-ANALOG-DEvaluation PCBThe circuit board used in the application should use RF circuit design techniques. Signal lines should have 50 Ohm impedance while the package ground leads and exposed paddle should be connected directly to the ground plane similar to that shown. A sufficient number of via holes should be used to connect the top and bottom ground planes.

9 The evaluation circuit board shown is available from Analog Devices, upon of Materials for Evaluation PCB 107010 - HMC472 ALP4 [1]ItemDescriptionJ1 - J2 PCB Mount SMA ConnectorJ314 Pin DC ConnectorC11000 pF Capacitor, 0603 , C31000 pF Capacitor, 0402 - C7330 pF Capacitor, 0402 Digital AttenuatorPCB [2]106977 Evaluation PCB[1] Reference this number when ordering complete evaluation PCB[2] Circuit Board Material: Rogers 4350