HMC346AMS8GE v03.1119 GaAs MMIC SMT VOLTAGE-VARIABLE ATTENUATOR, DC - 8 GHz 8 Typical Applications Features This attenuator is ideal for use as a VVA Wide Bandwidth: DC - 8 GHz for DC - 8 GHz applications: Low Phase Shift vs. Attenuation Point-to-Point Radio 32 dB Attenuation Range VSAT Radio General Description Functional Diagram The HMC346AMS8GE is absorptive Voltage Variable Attenuators (VVA) in 8 lead surface-mount packages operating from DC - 8 GHz. It features an on-chip ref- erence attenuator for use with an external op-amp to provide simple single voltage attenuation control, 0 to -5V. 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 cir- cuits and temperature compensation of multiple gain stages in microwave point-to-point and VSAT radios. Electrical Specifications, T = +25 C, 50 Ohm system A Parameter Min Typical Max Units Insertion Loss DC - 8 GHz 2.1 3.1 dB Attenuation Range DC - 8 GHz 23 28 dB Return Loss DC - 8 GHz 5 10 dB tRISE, tFALL (10/90% RF) 8 ns Switching Characteristics tON, tOFF (50% CTL to 10/90% RF) 16 ns Min. Atten. +8 dBm Input Power for 0.25 dB Compression (0.5 - 8 GHz) Atten. >2 dB +4 dBm Input Third Order Intercept (0.5 - 8 GHz) Min. Atten. +30 dBm (Two-tone Input Power = -8 dBm Each Tone) Atten. >2 dB +10 dBm Information furnished by Analog Devices is believed to be accurate and reliable. However, no For price, delivery, and to place orders: Analog Devices, Inc., responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 rights of third parties that may result from its use. Specifications subject to change without notice. No Phone: 781-329-4700 Order online at www.analog.com 8 - 1 license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Application Support: Phone: 1-800-ANALOG-D Trademarks and registered trademarks are the property of their respective owners. ATTENUATORS - SMT HMC346AMS8GE v03.1119 GaAs MMIC SMT VOLTAGE-VARIABLE ATTENUATOR, DC - 8 GHz 8 Insertion Loss vs. Temperature Relative Attenuation 0 0 -1 -10 -2 -20 -3 -30 -4 -40 -5 01 23456 789 10 01 23456 789 10 FREQUENCY (GHz) FREQUENCY (GHz) 5 dB 20 dB Max 10dB 25 dB +25 C +85 C -40 C 15 dB 30dB Relative Attenuation vs. Return Loss vs. Attenuation Control Voltage 4 GHz 0 0 -5 -1 V2 -40C -10 V2 +25C V2 +85C -2 -15 -20 -3 -25 -4 V1 -40C V1 +85C V1 +25C -30 01 23456 789 10 -5 FREQUENCY (GHz) 0 5 10 15 20 25 30 Min 15 dB Max RELATIVE ATTENUATION (dB) Relative Attenuation vs. Relative Phase Control Voltage 8 GHz 180 0 150 -1 V2 -40C 120 V2 +25C V2 +85C -2 90 60 -3 30 -4 V1 -40C V1 +25C V1 +85C 0 01 23456 789 10 -5 FREQUENCY (GHz) 0 5 10 15 20 25 30 5 dB 20 dB Max 10dB 25 dB 15 dB 30dB RELATIVE ATTENUATION (dB) For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 Phone: 781-329-4700 Order online at www.analog.com 8 - 2 Application Support: Phone: 1-800-ANALOG-D RETURN LOSS (dB) INSERTION LOSS (dB) RELATIVE PHASE (deg) CONTROL VOLTAGE (Vdc) CONTROL VOLTAGE (Vdc) ATTENUATION (dB) ATTENUATORS - SMT