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| HMC346LP3 / 346LP3E v03.0705 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 14 GHz Typical Applications 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 6 ATTENUATORS - SMT The HMC346LP3 / HMC346LP3E is ideal for: * Basestation Infrastructure * Fiber Optics & Broadband Telecom * Microwave Radio & VSAT * Military Radios, Radar, & ECM * Test Instrumentation Functional Diagram General Description The HMC346LP3 & HMC346LP3E are pabsorptive Voltage Variable Attenuators (VVA) in low cost leadless surface mount plastic packages 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 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) 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 6 - 96 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 HMC346LP3 / 346LP3E v03.0705 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 14 GHz Insertion Loss vs. Temperature 0 -0.5 INSERTION LOSS (dB) Relative Attenuation 0 -5 ATTENUATION (dB) -10 -15 -20 -25 -30 -35 -40 6 ATTENUATORS - SMT 6 - 97 -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 0 2 4 6 8 10 12 14 16 FREQUENCY (GHz) Return Loss vs. Attenuation 0 -5 -10 -15 -20 -25 -30 -35 0 2 4 6 8 10 12 14 16 FREQUENCY (GHz) Relative Attenuation vs. Control Voltage @ 10 GHz 0 -0.5 -1 -1.5 -2 -2.5 -3 0 5 10 15 20 25 30 RELATIVE ATTENUATION (dB) V1 V2 MIN 5 dB MAX 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 CONTROL VOLTAGE (Vdc) RETURN LOSS (dB) 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: 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com HMC346LP3 / 346LP3E v03.0705 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 14 GHz Second Harmonic vs. Attenuation, Pin = -8 dBm 80 70 60 50 40 30 20 Input IP2 vs. Attenuation* 6 INPUT IP2 (dBm) 70 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 SECOND HARMONIC (dBc) 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. 6 - 98 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 HMC346LP3 / 346LP3E v03.0705 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 6 ATTENUATORS - SMT 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. -40 to +85 C ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS Outline Drawing Package Information Part Number HMC346LP3 HMC346LP3E Package Body Material Low Stress Injection Molded Plastic RoHS-compliant Low Stress Injection Molded Plastic Lead Finish Sn/Pb Solder 100% matte Sn MSL Rating MSL1 MSL1 [1] Package Marking [3] 346 XXXX 346 XXXX [2] [1] Max peak reflow temperature of 235 C [2] Max peak reflow temperature of 260 C [3] 4-Digit lot number XXXX 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 6 - 99 HMC346LP3 / 346LP3E v03.0705 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 14 GHz Pin Descriptions 6 ATTENUATORS - SMT Pin Number 1, 3, 7, 10, 12 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. This pin should be connected to PCB RF ground. Interface Schematic 2, 11 RF1 RF2 4, 9, 13, 14, 15, 16 N/C 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.) 6 - 100 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 HMC346LP3 / 346LP3E v03.0705 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 14 GHz Evaluation PCB 6 ATTENUATORS - SMT List of Materials for Evaluation PCB 105709 [1] Item J1 - J2 J3 - J6 U1 PCB [2] Description PCB Mount SMA RF Connector DC Pin HMC346LP3 / HMC346LP3E VVA 105695 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 6 - 101 |
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