HMC346MS8G

MICROWAVE CORPORATION v03.0304 HMC346MS8G Features Wide Bandwidth: DC - 8 GHz Low Phase Shift vs. Attenuation 32 dB Attenuation Range GaAs MMIC SMT VOLTAGE-VARIABLE ATTENUATOR, DC - 8 GHz Typical Applications 9 ATTENUATORS - SMT This attenuator is ideal for use as a VVA for DC - 8 GHz applications: • Point-to-Point Radio • VSAT Radio Functional Diagram General Description The HMC346MS8G is an absorptive Voltage Variable Attenuator (VVA) in an 8 lead surface-mount package operating from DC - 8 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. Applications include AGC circuits and temperature compensation of multiple gain stages in microwave point-to-point and VSAT radios. Electrical Specifications, TA = +25° C, 50 ohm system Parameter Insertion Loss Attenuation Range Return Loss Switching Characteristics tRISE, tFALL (10/90% RF) tON, tOFF (50% CTL to 10/90% RF) Input Power for 0.25 dB Compression (0.5 - 8 GHz) Min. Atten. Atten. >2 dB Input Third Order Intercept (0.5 - 8 GHz) (Two-tone Input Power = -8 dBm Each Tone) Min. Atten. Atten. >2 dB +8 -2 +25 +10 dBm dBm dBm dBm 2 8 ns ns DC - 8 GHz DC - 8 GHz DC - 8 GHz 27 5 Min Typical 1.5 32 10 Max 2.5 Units dB dB dB 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 v03.0304 HMC346MS8G GaAs MMIC SMT VOLTAGE-VARIABLE ATTENUATOR, DC - 8 GHz GaAs MMIC SUB-HARMONICALLY Relative Attenuation PUMPED MIXER Insertion Loss vs. Temperature 0 0 -5 INSERTION LOSS (dB) -1 ATTENUATION (dB) -10 -15 -20 -25 -30 -35 -40 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 FREQUENCY (GHz) FREQUENCY (GHz) 17 - 25 GHz 9 ATTENUATORS - SMT 9 - 75 -2 -3 T+25C T -40C T+85C -4 Return Loss vs. Attenuation 0 -5 Relative Attenuation vs. Control Voltage @ 4 GHz 0 -0.5 CONTROL VOLTAGE (Vdc) V2 -40C RETURN LOSS (dB) -10 -15 -20 -25 -30 0 1 2 3 4 5 6 7 8 9 10 FREQUENCY (GHz) MIN 15 dB MAX -1 V2 +25C V2 +85C -1.5 -2 -2.5 V1 +85C V1 +25C V1 -40C -3 0 5 10 15 20 25 30 RELATIVE ATTENUATION (dB) Relative Phase 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 0 1 2 25 dB 20 dB 15 dB 10 dB 5 dB max 30 dB Relative Attenuation vs. Control Voltage @ 8 GHz 0 -0.5 CONTROL VOLTAGE (Vdc) V2 -40C RELATIVE PHASE (DEG) -1 V2 +25C V2 +85C -1.5 -2 -2.5 V1 +85C V1 +25C -3 3 4 5 6 7 8 9 10 0 5 10 15 20 FREQUENCY (GHz) RELATIVE ATTENUATION (dB) V1 -40C 25 30 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 v03.0304 HMC346MS8G GaAs MMIC SMT VOLTAGE-VARIABLE ATTENUATOR, DC - 8 GHz Input Third Order Intercept vs Attenuation* 30 THIRD ORDER INTERCEPT POINT (dBm) Input Second Order Intercept vs. Attenuation* 70 0 dB SECOND ORDER INTERCEPT POINT (dBm) 9 ATTENUATORS - SMT 25 60 50 3 dB 0 dB 20 10 dB 40 30 20 10 10 dB 15 6 dB 10 3 dB 6 dB 5 0 1 2 3 4 5 6 7 8 0 1 2 3 4 5 6 7 8 FREQUENCY (GHz) FREQUENCY (GHz) 0.25 dB Compression vs. Attenuation 20 INPUT.25dB COMPRESSION (dBm) 0 dB (REF) 5 dB 1 dB Compression vs. Attenuation 20 15 15 INPUT P1dB (dBm) 10 10 5 5 0 0 0 dB (REF) 5 dB -5 0 1 2 3 4 5 6 7 8 FREQUENCY (GHz) -5 0 1 2 3 4 5 6 7 8 FREQUENCY (GHz) Second Harmonic vs. Attenuation 80 70 SECOND HARMONIC (dBc) 60 50 6 dB 10 dB 0 dB 40 30 20 0 1 2 3 4 5 6 7 8 FREQUENCY (GHz) 3 dB *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 MICROWAVE CORPORATION v03.0304 HMC346MS8G GaAs MMIC SMT VOLTAGE-VARIABLE ATTENUATOR, DC - 8 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. PACKAGE BODY MATERIAL: LOW STRESS INJECTION MOLDED PLASTIC SILICA AND SILICON IMPREGNATED. 2. LEADFRAME MATERIAL: COPPER ALLOY 3. LEADFRAME PLATING: Sn/Pb SOLDER 4. DIMENSIONS ARE IN INCHES [MILLIMETERS]. 5. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.15mm PER SIDE. 6. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.25mm PER SIDE. 7. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED TO PCB RF GROUND. 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 MICROWAVE CORPORATION v03.0304 HMC346MS8G GaAs MMIC SMT VOLTAGE-VARIABLE ATTENUATOR, DC - 8 GHz Pin Descriptions Pin Number Function RF1 RF2 Description This pin is DC coupled and matched to 50 Ohm. Blocking capacitors are required if RF line potential is not equal to 0V. Interface Schematic 9 ATTENUATORS - SMT 1, 8 2, 7 GND This pin must be DC grounded. 3, 6 V2, V1 Control Input (Master). 4 I Control Input (Slave). 5 N/C Not Connected. 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 -2.5 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 MICROWAVE CORPORATION v03.0304 HMC346MS8G GaAs MMIC SMT VOLTAGE-VARIABLE ATTENUATOR, DC - 8 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 - J7 U1 PCB* Description PC Mount SMA RF Connector DC PIN HMC346MS8G 104089 Eval Board *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