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| MICROWAVE CORPORATION v00.0403 HMC468LP3 Features 1 dB LSB Steps to 7 dB High IP3: +50 dBm +/- 0.25 dB Typical Bit Error Single Control Line Per Bit Single +5V Supply 3 mm x 3 mm x 1 mm SMT Package 1 dB LSB GaAs MMIC 3-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 6.0 GHz Typical Applications The HMC468LP3 is ideal for: 9 ATTENUATORS - SMT * Cellular; UMTS/3G Infrastructure * Fixed Wireless & WLL * Microwave Radio & VSAT * Test Equipment Functional Diagram General Description The HMC468LP3 is a broadband 3-bit GaAs IC digital attenuator in a low cost leadless surface mount package. Covering DC to 6.0 GHz, the insertion loss is less than 1 dB typical up to 4 GHz. The attenuator bit values are 1 (LSB), 2 and 4 dB for a total attenuation of 7 dB. Attenuation accuracy is excellent at 0.4 dB typical step error with an IIP3 of +50 dBm. Three control voltage inputs, toggled between 0 and +5V, are used to select each attenuation state. A single Vdd bias of +5V is required. Electrical Specifications, TA = +25 C, With Vdd = +5V & Vctl = 0/+5V Parameter Frequency (GHz) DC - 2.5 GHz 2.5 - 4.5 GHz 4.5 - 6.0 GHz DC - 6.0 GHz DC - 4.0 GHz 4.0 - 6.0 GHz All States 1 - 4 dB States 5 - 7 dB States DC - 2.5 GHz 2.5 - 6.0 GHz 2.5 - 6.0 GHz 0.25 - 6.0 GHz 0.25 - 6.0 GHz DC - 6.0 GHz 110 135 ns ns Min. Typ. 0.7 0.9 1.3 7 20 15 0.2 + 2% of Atten. Setting Max. 0.3 + 3% of Atten. Setting Max. 0.4 + 4% of Atten. Setting Max. 20 50 Max. 1.0 1.3 1.8 Units dB dB dB dB dB dB dB dB dB dBm dBm Insertion Loss Attenuation Range Return Loss (RF1 & RF2, All Atten. States) Attenuation Accuracy: (Referenced to Insertion Loss) Input Power for 0.1 dB Compression Input Third Order Intercept Point (Two-Tone Input Power= 0 dBm Each Tone) Switching Characteristics tRISE, tFALL (10/90% RF) tON, tOFF (50% CTL to 10/90% RF) * Bypass capacitor connecting ACG1, ACG2 & ACG3 to RF ground required per pin description herein. 9 - 104 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com MICROWAVE CORPORATION v00.0403 HMC468LP3 1 dB LSB GaAs MMIC 3-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 6.0 Return Loss RF1, RF2 Insertion Loss 0 -0.5 INSERTION LOSS (dB) RETURN LOSS (dB) -1 -1.5 -2 +25 C (Only Major States are Shown) 0 -5 -10 -15 -20 -25 -30 -35 IL 1 dB 2 dB 4 dB 7 dB 9 ATTENUATORS - SMT 9 - 105 -2.5 -3 0 0.5 1 1.5 +85 C -40 C 2 2.5 3 3.5 4 4.5 5 5.5 6 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 FREQUENCY (GHz) FREQUENCY (GHz) Normalized Attenuation (Only Major States are Shown) 0 NORMALIZED ATTENUATION (dB) Bit Error vs. Attenuation State 1 0.8 80 MHz 500 MHz 1 GHz 2 GHz 3 GHz 4 GHz 5 GHz 6 GHz -2 BIT ERROR (dB) 1 dB 2 dB 4 dB 7 dB 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 1 2 -4 -6 -8 -10 FREQUENCY (GHz) 3 4 5 6 7 ATTENUATION STATE (dB) Bit Error vs. Frequency (Only Major States are Shown) 1 0.8 Relative Phase vs. Frequency (Only Major States are Shown) 20 15 10 5 0 -5 -10 1 dB 2 dB 4 dB 7 dB BIT ERROR (dB) 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 FREQUENCY (GHz) 1 dB 2 dB 4 dB 7 dB RELATIVE PHASE (deg) 0.6 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 FREQUENCY (GHz) For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com v00.0403 MICROWAVE CORPORATION HMC468LP3 1 dB LSB GaAs MMIC 3-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 6.0 GHz Worst Case Step Error Between Successive Attenuation States 1 0.8 STEP ERROR (dB) 9 ATTENUATORS - SMT 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 FREQUENCY (GHz) Bias Voltage & Current Vdd Range= +5.0 Vdc 10% Vdd (Vdc) +5.0 Idd (Typ.) (mA) 1.05 Idd (Max.) (mA) 1.8 Truth Table Control Voltage Input V1 4 dB High High High V2 2 dB High High Low High Low V3 1 dB High Low High High Low Attenuation Setting RF1 - RF2 Reference I.L. 1 dB 2 dB 4 dB 7 dB TTL/CMOS Control Voltages State Low High Bias Condition 0 to 0.8 Vdc @ -5 uA Typ. Low Low +2.0 to +5.0 Vdc @ 40 uA Typ. Any combination of the above states will provide an attenuation approximately equal to the sum of the bits selected. 9 - 106 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com v00.0403 MICROWAVE CORPORATION HMC468LP3 1 dB LSB GaAs MMIC 3-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 6.0 GHz Absolute Maximum Ratings Control Voltage (V1 to V3) Bias Voltage (Vdd) Staorage Temperature Operating Temperature RF Input Power -0.5 Vdc to Vdd +1 Vdc +7.0 Vdc -65 to +150 C -40 to +85 C 9 ATTENUATORS - SMT NOTES: 1. MATERIAL PACKAGE BODY: LOW STRESS INJECTION MOLDED PLASTIC SILICA AND SILICON IMPREGNATED. 2. LEAD AND GROUND PADDLE MATERIAL: COPPER ALLOY 3. LEAD AND GROUND PADDLE PLATING: Sn/Pb SOLDER 4. DIMENSIONS ARE IN INCHES [MILLIMETERS]. 5. LEAD SPACING TOLERANCE IS NON-CUMULATIVE 6. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM. PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM. 7. PACKAGE WARP SHALL NOT EXCEED 0.05mm. 8. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED TO PCB RF GROUND. +30 dBm Outline Drawing For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com 9 - 107 v00.0403 MICROWAVE CORPORATION HMC468LP3 1 dB LSB GaAs MMIC 3-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 6.0 GHz Pin Descriptions Pin Number Function N/C Description These pins should be connected to PCB RF ground to maximize performance. Interface Schematic 9 ATTENUATORS - SMT 1, 3, 4, 8, 9, 10, 12 2,11 RF1, RF2 This pin is DC coupled and matched to 50 Ohm. Blocking capacitors are required 13 - 15 V1 - V3 See truth table and control voltage table. 5-7 ACG1 - ACG3 External capacitor to ground is required. Select value for lowest frequency of operation. Place capacitor as close to pins as possible. Supply Voltage 16 Vdd GND Package bottom has an exposed metal paddle that must be connected to RF/DC ground. Application Circuit 9 - 108 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com v00.0403 MICROWAVE CORPORATION HMC468LP3 1 dB LSB GaAs MMIC 3-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 6.0 GHz Evaluation PCB 9 ATTENUATORS - SMT 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. List of Material Item J1 - J2 J3 - J7 C1 C2, C3 C4 U1 PCB* Description PC Mount SMA Connector DC Pin 1000 pF Capacitor, 0402 Pkg. 1000 pF Capacitor, 0603 Pkg. 3300 pF Capacitor, 0603 Pkg. HMC468LP3 Digital Attenuator 107300 Evaluation PCB * Circuit Board Material: Rogers 4350 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com 9 - 109 |
Price & Availability of HMC468LP3
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