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| v02.0604 MICROWAVE CORPORATION HMC346LP3 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 14 GHz Features Wide Bandwidth: DC - 14 GHz Low Phase Shift vs. Attenuation 30 dB Attenuation Range Simplified Voltage Control 3 mm x 3 mm x 1 mm SMT Package Typical Applications The HMC346LP3 is ideal for: 9 ATTENUATORS - SMT * Basestation Infrastructure * Fiber Optics & Broadband Telecom * Microwave Radio & VSAT * Military Radios, Radar, & ECM * Test Instrumentation Functional Diagram General Description The HMC346LP3 is an absorptive Voltage Variable Attenuator (VVA) in a low cost leadless surface mount plastic package operating from DC - 14 GHz. It features an on-chip reference attenuator for use with an external op-amp to provide simple single voltage attenuation control, 0 to -3V. The device is ideal in designs where an analog DC control signal must control RF signal levels over a 30 dB amplitude range. This VVA is an excellent alternative to the HMC121C8. Electrical Specifications, TA = +25 C, 50 ohm system Parameter Insertion Loss DC - 10 GHz DC - 14 GHz DC - 10 GHz DC - 14 GHz DC - 14 GHz tRISE, tFALL (10/90% RF): tON, tOFF (50% CTL to 10/90% RF): Min. Atten: Atten. >2 dB: Min. Atten: Atten. >2 dB: 27 22 5 Min Typical 1.7 2.8 30 27 10 2 8 +8 -4 +25 +10 Max 2.2 3.3 Units dB dB dB dB dB ns ns dBm dBm dBm dBm Attenuation Range Return Loss Switching Characteristics Input Power for 0.25 dB Compression (0.5 - 8 GHz) Input Third Order Intercept (0.5 - 8 GHz) (Two-tone Input Power = -8 dBm Each Tone) 9 - 74 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 v02.0604 HMC346LP3 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 14 GHz GaAs MMIC SUB-HARMONICALLY Relative Attenuation PUMPED MIXER Insertion Loss vs. Temperature 0 -0.5 INSERTION LOSS (dB) -1 -1.5 -2 -2.5 -3 -3.5 -4 0 2 4 6 8 10 12 14 16 FREQUENCY (GHz) +25 C -40 C +85 C 17 - 25 GHz 0 -5 -10 ATTENUATION (dB) -15 -20 -25 -30 -35 -40 0 2 4 6 8 10 12 14 16 FREQUENCY (GHz) 9 ATTENUATORS - SMT 9 - 75 Return Loss vs. Attenuation 0 -5 RETURN LOSS (dB) -10 -15 -20 -25 -30 -35 0 2 4 6 8 10 12 14 16 FREQUENCY (GHz) MIN 5 dB MAX Relative Attenuation vs. Control Voltage @ 10 GHz 0 -0.5 CONTROL VOLTAGE (Vdc) -1 -1.5 -2 -2.5 -3 0 5 10 15 20 25 30 RELATIVE ATTENUATION (dB) V1 V2 Relative Phase 180 160 RELATIVE PHASE (DEG) 140 120 100 80 60 40 5 dB 10 dB 15 dB 20 dB 25 dB 30 dB max Input IP3 vs. Attenuation* 30 25 INPUT IP3 (dBm) 20 15 10 5 0 dB 3 dB 6 dB 10 dB 20 0 0 2 4 6 8 10 12 14 16 FREQUENCY (GHz) 0 0 2 4 6 8 10 12 14 16 FREQUENCY (GHz) *Two-tone input power = -8 dBm each tone, 1 MHz spacing. 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 v02.0604 MICROWAVE CORPORATION HMC346LP3 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 14 GHz Input IP2 vs. Attenuation* 70 Second Harmonic vs. Attenuation, Pin = -8 dBm 80 70 SECOND HARMONIC (dBc) 60 50 40 30 20 9 INPUT IP2 (dBm) 60 50 40 30 20 10 0 2 4 6 8 10 12 14 16 FREQUENCY (GHz) ATTENUATORS - SMT 0 dB 3 dB 6 dB 10 dB 0 dB 3 dB 6 dB 10 dB 0 2 4 6 8 10 12 14 16 FREQUENCY (GHz) 0.25 dB Compression vs. Attenuation 15 1 dB Compression vs. Attenuation 20 10 INPUT .25dB (dBm) INPUT P1dB (dBm) 15 5 0 dB (REF) 6 dB 10 0 5 -5 0 0 dB (REF) 6 dB -10 0 2 4 6 8 10 12 14 16 FREQUENCY (GHz) -5 0 2 4 6 8 10 12 14 16 FREQUENCY (GHz) *Two-tone input power = -8 dBm each tone, 1 MHz spacing. 9 - 76 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 v02.0604 MICROWAVE CORPORATION HMC346LP3 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 14 GHz Absolute Maximum Ratings RF Input Power Control Voltage Range Storage Temperature Operating Temperature +18 dBm +1.0 to -5.0 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. 9. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED PCB LAND PATTERN. 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 - 77 v02.0604 MICROWAVE CORPORATION HMC346LP3 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 14 GHz Pin Descriptions Pin Number Function Description Interface Schematic 9 ATTENUATORS - SMT 1, 3, 7, 10, 12 GND Package bottom has exposed metal paddle that must also be connected to PCB RF ground. 2, 11 RF1 RF2 This pin is DC coupled and matched to 50 Ohm. Blocking capacitors are required if the RF line potential is not equal to 0V. 4, 9, 13, 14, 15, 16 N/C This pin should be connected to PCB RF ground. 5, 8 V2, V1 Control input (master). 6 I Control input (slave). Single-Line Control Driver External op-amp control circuit maintains impedance match while attenuation is varied. Input control ranges from 0 Volts (min. attenuation) to -3.0 Volts (max. attenuation.) 9 - 78 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 v02.0604 MICROWAVE CORPORATION HMC346LP3 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 14 GHz Evaluation PCB 9 ATTENUATORS - SMT The circuit board used in the final application should be generated with proper RF circuit design techniques. Signal lines at the RF ports should be 50 ohm impedance and the package ground leads and package bottom should be connected directly to the PCB RF ground plane, similar to that shown above. The evaluation circuit board shown above is available from Hittite Microwave Corporation upon request. List of Material Item J1 - J2 J3 - J6 U1 PCB* Description PC Mount SMA RF Connector DC Pin HMC346LP3 VVA 105695 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 - 79 |
Price & Availability of HMC346LP3
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