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| HMC346LC3B v00.1204 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 18 GHz Typical Applications Features Wide Bandwidth: DC - 18 GHz Low Phase Shift vs. Attenuation 30 dB Attenuation Range Simplified Voltage Control RoHS Compliant 3 x 3 mm SMT Package 9 ATTENUATORS - SMT The HMC346LC3B is ideal for: * Test Instrumentation * Fiber Optics & Broadband Telecom * Microwave Radio & VSAT * Military Radios, Radar, & ECM Functional Diagram General Description The HMC346LC3B is an absorptive Voltage Variable Attenuator (VVA) in a leadless "Pb free" RoHS compliant SMT mount plastic package operating from DC 18 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. The HMC346LC3B allows the use of surface mount manufacturing techniques. Electrical Specifications, TA = +25 C, 50 Ohm system Parameter DC - 10 GHz DC - 14 GHz DC - 18 GHz DC - 12 GHz DC - 18 GHz DC - 18 GHz Min. Atten: Atten. >2 dB: Min. Atten: Atten. >2 dB: tRISE, tFALL (10/90% RF): tON, tOFF (50% CTL to 10/90% RF): 26 22 Min Typical 1.5 2.2 2.8 30 26 10 +8 -4 +25 +10 2 8 Max 2.0 2.7 3.5 Units dB dB dB dB dB dB dBm dBm dBm dBm ns ns Insertion Loss Attenuation Range Return Loss Input Power for 0.25 dB Compression (0.5 - 18 GHz) Input Third Order Intercept (0.5 - 18 GHz) (Two-tone Input Power = -8 dBm Each Tone) Switching Characteristics 9 - 90 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 HMC346LC3B v00.1204 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 18 GHz Insertion Loss vs. Temperature 0 -0.5 INSERTION LOSS (dB) Relative Attenuation 0 -5 ATTENUATION (dB) -10 -15 -20 -25 -30 -35 -40 9 ATTENUATORS - SMT 9 - 91 -1 -1.5 -2 -2.5 -3 -3.5 -4 0 2 4 6 8 10 12 14 16 18 FREQUENCY (GHz) +25C +85C -40C 0 2 4 6 8 10 12 14 16 18 FREQUENCY (GHz) Return Loss vs. Attenuation 0 -5 RETURN LOSS (dB) -10 -15 -20 -25 -30 -35 0 2 4 6 8 10 12 14 16 18 FREQUENCY (GHz) MIN 5 dB MAX Relative Attenuation vs. Control Voltage @ 10 GHz 0 CONTROL VOLTAGE (Vdc) -0.5 -1 -1.5 -2 -2.5 -3 0 5 10 15 20 25 30 RELATIVE ATTENUATION (dB) V1 V2 Relative Phase vs. Attenuation 180 160 RELATIVE PHASE (deg) 140 120 100 80 60 40 5 dB 10dB 15dB 20dB 25dB 30dB 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 18 FREQUENCY (GHz) 0 0 2 4 6 8 10 12 14 16 18 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: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com HMC346LC3B v00.1204 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 18 GHz Second Harmonic vs. Attenuation, Pin = -8 dBm 80 70 60 50 40 30 20 Input IP2 vs. Attenuation* 9 INPUT IP2 (dBm) 70 60 50 40 30 20 10 0 2 4 6 8 10 12 14 16 18 FREQUENCY (GHz) ATTENUATORS - SMT 0 dB 3 dB 6 dB 10 dB SECOND HARMONIC (dBc) 0 dB 3 dB 6 dB 10 dB 0 2 4 6 8 10 12 14 16 18 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 18 FREQUENCY (GHz) -5 0 2 4 6 8 10 12 14 16 18 FREQUENCY (GHz) *Two-tone input power = -8 dBm each tone, 1 MHz spacing. 9 - 92 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 HMC346LC3B v00.1204 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 18 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 9 ATTENUATORS - SMT NOTES: 1. PACKAGE BODY MATERIAL: ALUMINA 2. LEAD AND GROUND PADDLE PLATING: GOLD FLASH OVER Ni 3. DIMENSIONS ARE IN INCHES [MILLIMETERS] 4. LEAD SPACING TOLERANCE IS NON-CUMULATIVE 5. PACKAGE WARP SHALL NOT EXCEED 0.05mm 6. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED TO PCB RF GROUND -40 to +85 C ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS Outline Drawing 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 9 - 93 HMC346LC3B v00.1204 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 18 GHz Pin Descriptions 9 ATTENUATORS - SMT Pin Number 1, 3, 7, 9 Function GND Description Package bottom has exposed metal paddle that must also be connected to PCB RF ground. This pin is DC coupled and matched to 50 Ohm. Blocking capacitors are required if the RF line potential is not equal to 0V. Interface Schematic 2, 8 RF1 RF2 4, 6 V2, V1 Control input (master). 5 I Control input (slave). 10, 11, 12 N/C This pin may be connected to PCB RF/DC ground. Performance will not be affected. 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 - 94 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 HMC346LC3B v00.1204 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 18 GHz Evaluation PCB 9 ATTENUATORS - SMT List of Material for Evaluation PCB 109741 [1] Item J1 - J2 J3 - J7 U1 PCB [2] Description PCB Mount SMA RF Connector DC Pin HMC346LC3B VVA 109739-1 Evaluation PCB [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Rogers 4350 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. 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 9 - 95 |
Price & Availability of HMC346LC3B
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