HMC472LP4 / 472LP4E v06.1108 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz ATTENUATORS - DIGITAL - SMT 5 Typical Applications Features The HMC472LP4(E) is ideal for: 0.5 dB LSB Steps to 31.5 dB • 3G Infrastructure & access points Single Control Line Per Bit • Cellular/3G, LTE & UMB TTL/CMOS Compatible Control • WiMAX, WiBN & Fixed Wireless ± 0.25 dB Typical Step Error • Test Equipment and Sensors Single +5V Supply 24 Lead Ceramic 4x4mm SMT Package: 16mm2 • GSM, WCDMA & TD-SCDMA Included in the HMC-DK004 Designer’s Kit Functional Diagram General Description The HMC472LP4 & HMC472LP4E are broadband 6-bit GaAs IC digital attenuators in low cost leadless surface mount packages. This single positive control line per bit digital attenuator incorporates off chip AC ground capacitors for near DC operation, making it suitable for a wide variety of RF and IF applications. Covering DC to 3.8 GHz, the insertion loss is less than 2.0 dB typical. The attenuator bit values are 0.5 (LSB), 1, 2, 4, 8, and 16 dB for a total attenuation of 31.5 dB. Attenuation accuracy is excellent at ± 0.25 dB typical step error with an IIP3 of +45 dBm. Six TTL/ CMOS control inputs are used to select each attenuation state. A single Vdd bias of +5V is required. Electrical Specifi cations, TA = +25° C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted) Parameter Frequency (GHz) Min. Typ. Max. Units 1.8 2.3 3 dB dB dB Insertion Loss DC - 1.5 GHz 1.5 - 3.0 GHz 3.0 - 3.8 GHz 1.5 2.0 2.3 Attenuation Range DC - 3.8 GHz 31.5 dB Return Loss (RF1 & RF2, All Atten. States) DC - 3.8 GHz 15 dB DC - 1.0 GHz 1.0 - 2.2 GHz 1.0 - 2.2 GHz 2.2 - 3.0 GHz 3.0 - 3.8 GHz ± (0..20 + 3% of Atten. Setting) Max. ± (0.25 + 3% of Atten. Setting) Max. ± (0.15 + 4% of Atten. Setting) Max. ± (0.30 + 3% of Atten. Setting) Max ± (0.35 + 5% of Atten. Setting) Max. dB dB dB dB dB Attenuation Accuracy: (Referenced to Insertion Loss) All Attenuation States 0.5 - 3.5 dB States 4.0 - 31.5 dB States All Attenuation States All Attenuation States Input Power for 0.1 dB Compression Input Third Order Intercept Point (Two-Tone Input Power= 0 dBm Each Tone) REF - 15.5 dB States 16.0 - 31.5 dB States 0.1 - 3.8 GHz 20 dBm 0.1 - 3.8 GHz 45 35 dBm dBm 130 140 ns ns Switching Characteristics DC - 3.8 GHz tRISE, tFALL (10/90% RF) tON, tOFF (50% CTL to 10/90% RF) 5 - 140 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 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 0 0 -0.5 -0.5 -1 -1.5 +25C +85C -40C -2 -2.5 +25 C +85 C -40 C -1 -1.5 -2 -2.5 -3 0 0.05 0.1 0.15 0.2 0.25 0.3 -3 0.05 0.35 0.5 1 FREQUENCY (GHz) 1.5 2 Return Loss RF1, RF2 Return Loss RF1, RF2 (Only Major States are Shown) (Only Major States are Shown) 0 0 -5 -5 RETURN LOSS (dB) RETURN LOSS (dB) 2.5 3 3.5 4 3 3.5 4 3 3.5 4 FREQUENCY (GHz) -10 -15 -20 -25 0.5-16 dB -10 -15 -20 ATTENUATORS - DIGITAL - SMT 5 Insertion Loss INSERTION LOSS (dB) INSERTION LOSS (dB) Insertion Loss -25 31.5 dB -30 -30 -35 0 0.05 0.1 0.15 0.2 0.25 0.3 -35 0.05 0.35 0.5 1 1.5 2 Normalized Attenuation Normalized Attenuation (Only Major States are Shown) (Only Major States are Shown) 0 NORMALIZED ATTENUATION (dB) 0 NORMALIZED ATTENUATION (dB) 2.5 FREQUENCY (GHz) FREQUENCY (GHz) -5 -10 -15 -20 -25 -30 -35 0 0.05 0.1 0.15 0.2 FREQUENCY (GHz) 0.25 0.3 0.35 -5 -10 -15 -20 -25 -30 -35 0.05 0.5 1 1.5 2 2.5 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 Order On-line at www.hittite.com 5 - 141 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 2 50 MHz 1.5 3 GHz 3.8 GHz 1 -0.3 BIT ERROR (dB) BIT ERROR (dB) -0.2 100 MHz -0.4 -0.5 -0.6 -0.7 0.5 0 -0.5 -1 -0.8 1 GHz 200MHz, 300MHz, 350MHz -1.5 -0.9 40MHz, 500 MHz 100MHz, 2GHz -1 0 4 8 12 16 20 24 28 -2 0 32 4 8 ATTENUATION STATE (dB) 12 16 20 24 28 32 3.5 4 ATTENUATION STATE (dB) Bit Error vs. Frequency Bit Error vs. Frequency (Only Major States are Shown) (Only Major States are Shown) 2 2 1.5 0.5-4 dB 1 BIT ERROR (dB) 1 BIT ERROR (dB) ATTENUATORS - DIGITAL - SMT 0 -0.1 0.5 0 -0.5 0.5-4 dB 0 -1 -1 8 dB 8 dB 16 dB -1.5 31.5 dB 16 dB 31.5 dB -2 0.05 -2 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.5 1 1.5 2 2.5 3 FREQUENCY (GHz) FREQUENCY (GHz) Bit Error vs. Frequency without AC Ground Caps (Only Major States are Shown) 3 31.5 dB 2.5 2 BIT ERROR (dB) 1.5 0.5 - 8 dB 16 dB 1 0.5 0 -0.5 -1 -1.5 -2 -2.5 -3 0 0.5 1 1.5 2 2.5 3 3.5 4 FREQUENCY (GHz) 5 - 142 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 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 Relative Phase vs. Frequency Worst Case Step Error Between Successive Attenuation States (Only Major States are Shown) 100 STEP ERROR (dB) 0.6 60 40 31.5 dB 16 dB 20 8 dB 0 0.2 -0.2 -0.6 -20 0.5-4 dB -1 -40 0 0.5 1 1.5 2 2.5 3 3.5 4 0 0.5 1 Bias Voltage & Current 2 2.5 3 3.5 4 Truth Table Vdd = +5V ± 10% Control Voltage Input Vdd (V) Idd (Typ.) (mA) +4.5 4.7 +5.0 5.0 +5.5 5.3 Control Voltage State 1.5 FREQUENCY (GHz) FREQUENCY (GHz) Attenuation State RF1 - RF2 V1 16 dB V2 8 dB V3 4 dB V4 2 dB V5 1 dB V6 0.5 dB High High High High High High Reference I.L. High High High High High Low 0.5 dB High High High High Low High 1 dB High High High Low High High 2 dB High High Low High High High 4 dB High Low High High High High 8 dB Low High High High High High 16 dB Low Low Low Low Low Low 31.5 dB ATTENUATORS - DIGITAL - SMT 1 80 RELATIVE PHASE (deg) 5 Bias Condition Low 0 to +0.8 Vdc @ -5 uA Typ. High + 2.0 to + 5.0 Vdc @ 40 uA Typ. Note: Vdd = +5V Any combination of the above states will provide an attenuation 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 Order On-line at www.hittite.com 5 - 143 HMC472LP4 / 472LP4E v06.1108 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz ATTENUATORS - DIGITAL - SMT 5 Absolute Maximum Ratings RF Input Power (DC - 3 GHz) +27 dBm (T = +85 °C) Control Voltage Range (V1 to V6) -1V to Vdd +1V Bias Voltage (Vdd) +7V Channel Temperature 150 °C Continuous Pdiss (T = 85 °C) (derate 7.7 mW/°C above 85 °C) 0.5 W Thermal Resistance 130 °C/W Storage Temperature -65 to +150 °C Operating Temperature -40 to +85 °C ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS Outline Drawing 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 HMC472LP4 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 HMC472LP4E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 Package Marking [3] [1] H472 XXXX [2] H472 XXXX [1] Max peak reflow temperature of 235 °C [2] Max peak reflow temperature of 260 °C [3] 4-Digit lot number XXXX 5 - 144 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 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 Pin Number Function Description 1, 3, 5, 12, 14, 16, 17, 18 N/C These pins should be connected to PCB RF ground to maximize performance. 2 Vdd Supply Voltage. 4, 15 RF1, RF2 This pin is DC coupled and matched to 50 Ohm. Blocking capacitors are required. Select value based on lowest frequency of operation. 6 - 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 unconnected. 19 - 24 V1 - V6 See truth table and control voltage table. GND Package bottom has an exposed metal paddle that must also be connected to RF/DC Ground. Interface Schematic 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 Order On-line at www.hittite.com ATTENUATORS - DIGITAL - SMT 5 Pin Descriptions 5 - 145 HMC472LP4 / 472LP4E v06.1108 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz ATTENUATORS - DIGITAL - SMT 5 5 - 146 Application Circuit Note: For operations from 700 to 2700 MHz, pins 6 through 13 may be left unconnected. 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 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 ATTENUATORS - DIGITAL - SMT Evaluation PCB List of Materials for Evaluation PCB 107010 [1] Item Description J1 - J2 PCB Mount SMA Connector J3 14 Pin DC Connector C1 1000 pF Capacitor, 0603 Pkg. C2, C3 1000 pF Capacitor, 0402 Pkg. C4 - C7 330 pF Capacitor, 0402 Pkg. U1 HMC472LP4 / HMC472LP4E Digital Attenuator PCB [2] 106977 Evaluation PCB The circuit board used in the final 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. The evaluation circuit board shown is available from 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 Order On-line at www.hittite.com 5 - 147