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HMC472LP4 472LP4E / v06.1108 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz 5 Typical Applications Features The HMC472LP4(E) is ideal for: 0.5 dB LSB Steps to 31.5 dB T M • 3G Infrastructure & access points Single Control Line Per Bit S • Cellular/3G, LTE & UMB TTL/CMOS Compatible Control - • WiMAX, WiBN & Fixed Wireless ± 0.25 dB Typical Step Error L Single +5V Supply • Test Equipment and Sensors A T • GSM, WCDMA & TD-SCDMA 24 Lead Ceramic 4x4mm SMT Package: 16mm2 GI Included in the HMC-DK004 Designer’s Kit I D Functional Diagram General Description - The HMC472LP4 & HMC472LP4E are broadband S 6-bit GaAs IC digital attenuators in low cost leadless R surface mount packages. This single positive control O line per bit digital attenuator incorporates off chip AC T A ground capacitors for near DC operation, making it U suitable for a wide variety of RF and IF applications. N Covering DC to 3.8 GHz, the insertion loss is less E than 2.0 dB typical. The attenuator bit values are 0.5 T (LSB), 1, 2, 4, 8, and 16 dB for a total attenuation of T 31.5 dB. Attenuation accuracy is excellent at ± 0.25 dB A typical step error with an IIP3 of +45 dBm. Six TTL/ CMOS control inputs are used to select each attenua- tion state. A single Vdd bias of +5V is required. Electrical Specifi cations, T = +25° C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted) A Parameter Frequency (GHz) Min. Typ. Max. Units DC - 1.5 GHz 1.5 1.8 dB Insertion Loss 1.5 - 3.0 GHz 2.0 2.3 dB 3.0 - 3.8 GHz 2.3 3 dB Attenuation Range DC - 3.8 GHz 31.5 dB Return Loss (RF1 & RF2, All Atten. States) DC - 3.8 GHz 15 dB Attenuation Accuracy: (Referenced to Insertion Loss) DC - 1.0 GHz ± (0..20 + 3% of Atten. Setting) Max. dB All Attenuation States 1.0 - 2.2 GHz ± (0.25 + 3% of Atten. Setting) Max. dB 0.5 - 3.5 dB States 1.0 - 2.2 GHz ± (0.15 + 4% of Atten. Setting) Max. dB 4.0 - 31.5 dB States 2.2 - 3.0 GHz ± (0.30 + 3% of Atten. Setting) Max dB All Attenuation States 3.0 - 3.8 GHz ± (0.35 + 5% of Atten. Setting) Max. dB All Attenuation States Input Power for 0.1 dB Compression 0.1 - 3.8 GHz 20 dBm Input Third Order Intercept Point REF - 15.5 dB States 45 dBm 0.1 - 3.8 GHz (Two-Tone Input Power= 0 dBm Each Tone) 16.0 - 31.5 dB States 35 dBm Switching Characteristics DC - 3.8 GHz tRISE, tFALL (10/90% RF) 130 ns tON, tOFF (50% CTL to 10/90% RF) 140 ns For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 5 - 140 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

HMC472LP4 / 472LP4E v06.1108 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz 5 Insertion Loss Insertion Loss 0 0 T -0.5 -0.5 M S (dB) -1 S (dB) -1 ++-428055 CCC S S S O O - N L-1.5 N L-1.5 L O O TI TI A R +25C R NSE -2 +-4805CC NSE -2 T I I I -2.5 -2.5 G I -3 -3 D 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.05 0.5 1 1.5 2 2.5 3 3.5 4 - FREQUENCY (GHz) FREQUENCY (GHz) S R Return Loss RF1, RF2 Return Loss RF1, RF2 O (Only Major States are Shown) (Only Major States are Shown) T A 0 0 U -5 -5 N 0.5-16 dB B) -10 B) -10 E d d S ( S ( T S -15 S -15 O O T L L N N A R -20 R -20 U U T T E E R -25 R -25 31.5 dB -30 -30 -35 -35 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.05 0.5 1 1.5 2 2.5 3 3.5 4 FREQUENCY (GHz) FREQUENCY (GHz) Normalized Attenuation Normalized Attenuation (Only Major States are Shown) (Only Major States are Shown) 0 0 B) B) d -5 d -5 N ( N ( O O TI -10 TI -10 A A U U EN -15 EN -15 T T T T A A D -20 D -20 E E Z Z LI -25 LI -25 A A M M R R O -30 O -30 N N -35 -35 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.05 0.5 1 1.5 2 2.5 3 3.5 4 FREQUENCY (GHz) FREQUENCY (GHz) For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 5 - 141 Order On-line at www.hittite.com

HMC472LP4 / 472LP4E v06.1108 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz 5 Bit Error vs. Attenuation State Bit Error vs. Attenuation State 0 2 T M -0.1 50 MHz 1.5 3 GHz 3.8 GHz -0.2 S B) -0.3 100 MHz B) 1 - R (d -0.4 R (d 0.5 O O L R -0.5 R 0 R R A T E -0.6 T E -0.5 T BI -0.7 BI GI -0.8 -1 1 GHz 200MHz, 300MHz, 350MHz I -0.9 -1.5 100MHz, 2GHz 40MHz, 500 MHz D -1 -2 0 4 8 12 16 20 24 28 32 0 4 8 12 16 20 24 28 32 - ATTENUATION STATE (dB) ATTENUATION STATE (dB) S R O Bit Error vs. Frequency Bit Error vs. Frequency T (Only Major States are Shown) (Only Major States are Shown) A 2 2 U N 1.5 0.5-4 dB E 1 1 TT OR (dB) 0.5 OR (dB) 0.5-4 dB A RR 0 RR 0 E E T -0.5 T BI BI -1 -1 8 dB 16 dB 8 dB 31.5 dB 16 dB -1.5 31.5 dB -2 -2 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.05 0.5 1 1.5 2 2.5 3 3.5 4 FREQUENCY (GHz) FREQUENCY (GHz) Bit Error vs. Frequency without AC Ground Caps (Only Major States are Shown) 3 2.5 31.5 dB 2 1.5 0.5 - 8 dB 16 dB B) 1 d R ( 0.5 O R 0 R E-0.5 T BI -1 -1.5 -2 -2.5 -3 0 0.5 1 1.5 2 2.5 3 3.5 4 FREQUENCY (GHz) For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 5 - 142 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

HMC472LP4 / 472LP4E v06.1108 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz 5 Relative Phase vs. Frequency Worst Case Step Error (Only Major States are Shown) Between Successive Attenuation States 100 1 T 80 M g) 0.6 ASE (de 4600 OR (dB) 0.2 - S TIVE PH 20 31.5 dB 16 dB 8 dB EP ERR-0.2 AL ELA 0 ST T R -0.6 GI -20 0.5-4 dB I -40 -1 D 0 0.5 1 1.5 2 2.5 3 3.5 4 0 0.5 1 1.5 2 2.5 3 3.5 4 - FREQUENCY (GHz) FREQUENCY (GHz) S R O Bias Voltage & Current Truth Table T A Vdd = +5V ± 10% Control Voltage Input Attenua- U Vdd Idd (Typ.) V1 V2 V3 V4 V5 V6 tion State N (V) (mA) 16 dB 8 dB 4 dB 2 dB 1 dB 0.5 dB RF1 - RF2 E +4.5 4.7 Reference High High High High High High T I.L. +5.0 5.0 T High High High High High Low 0.5 dB +5.5 5.3 A High High High High Low High 1 dB High High High Low High High 2 dB Control Voltage High High Low High High High 4 dB High Low High High High High 8 dB State Bias Condition Low High High High High High 16 dB Low 0 to +0.8 Vdc @ -5 uA Typ. Low Low Low Low Low Low 31.5 dB High + 2.0 to + 5.0 Vdc @ 40 uA Typ. Any combination of the above states will provide an attenuation Note: Vdd = +5V approximately equal to the sum of the bits selected. For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 5 - 143 Order On-line at www.hittite.com

HMC472LP4 / 472LP4E v06.1108 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz 5 Absolute Maximum Ratings RF Input Power (DC - 3 GHz) +27 dBm (T = +85 °C) T ELECTROSTATIC SENSITIVE DEVICE Control Voltage Range (V1 to V6) -1V to Vdd +1V M OBSERVE HANDLING PRECAUTIONS Bias Voltage (Vdd) +7V S Channel Temperature 150 °C - L C(doenratitneu 7o.u7s m PWdi/s°sC (aTb =o v8e5 8°5C )°C) 0.5 W A Thermal Resistance 130 °C/W T I Storage Temperature -65 to +150 °C G Operating Temperature -40 to +85 °C I D - S R Outline Drawing O T A U N E T T A NOTES: 1. LEADFRAME MATERIAL: COPPER ALLOY 2. DIMENSIONS ARE IN INCHES [MILLIMETERS] 3. LEAD SPACING TOLERANCE IS NON-CUMULATIVE. 4. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM. PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM. 5. PACKAGE WARP SHALL NOT EXCEED 0.05mm. 6. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED TO PCB RF GROUND. 7. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED LAND PATTERN. Package Information Part Number Package Body Material Lead Finish MSL Rating Package Marking [3] HMC472LP4 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] H472 XXXX HMC472LP4E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] H472 XXXX [1] Max peak refl ow temperature of 235 °C [2] Max peak refl ow temperature of 260 °C [3] 4-Digit lot number XXXX For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 5 - 144 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

HMC472LP4 / 472LP4E v06.1108 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz 5 Pin Descriptions Pin Number Function Description Interface Schematic T 1, 3, 5, 12, These pins should be connected to PCB RF ground to N/C M 14, 16, 17, 18 maximize performance. S 2 Vdd Supply Voltage. - This pin is DC coupled and matched to 50 Ohm. L 4, 15 RF1, RF2 Blocking capacitors are required. Select value based on A lowest frequency of operation. T I External capacitors to ground are recommended for low and G high frequency operation. Select value for I 6 - 11, 13 ACG1 - ACG7 lowest frequency of operation. Place capacitor as close D to pins as possible. For operation from 700 to 2700 MHz, these pins may be left unconnected. - S R O 19 - 24 V1 - V6 See truth table and control voltage table. T A U N E Package bottom has an exposed metal paddle that must also T GND be connected to RF/DC Ground. T A For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 5 - 145 Order On-line at www.hittite.com

HMC472LP4 / 472LP4E v06.1108 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz 5 Application Circuit T M S - L A T I G I D - S R O T A U N E T Note: For operations from 700 to 2700 MHz, pins 6 through 13 may be left unconnected. T A For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 5 - 146 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

HMC472LP4 / 472LP4E v06.1108 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz 5 Evaluation PCB T M S - L A T I G I D - S R O T A U N E T T A List of Materials for Evaluation PCB 107010 [1] The circuit board used in the fi nal application should Item Description use RF circuit design techniques. Signal lines J1 - J2 PCB Mount SMA Connector should have 50 ohm impedance while the package J3 14 Pin DC Connector ground leads and exposed paddle should be con- C1 1000 pF Capacitor, 0603 Pkg. nected directly to the ground plane similar to that C2, C3 1000 pF Capacitor, 0402 Pkg. shown. A sufficient number of via holes should be C4 - C7 330 pF Capacitor, 0402 Pkg. used to connect the top and bottom ground planes. HMC472LP4 / HMC472LP4E U1 Digital Attenuator The evaluation circuit board shown is available from PCB [2] 106977 Evaluation PCB Hittite upon request. [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Rogers 4350 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 5 - 147 Order On-line at www.hittite.com