HMC346ALC3B v02.0717 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 18 GHz 8 Typical Applications Features The HMC346ALC3B is ideal for: Wide Bandwidth: DC - 18 GHz Test Instrumentation Low Phase Shift vs. Attenuation Fiber Optics & Broadband Telecom 30 dB Attenuation Range Microwave Radio & VSAT Simplified Voltage Control RoHS Compliant 3 x 3 mm SMT Package Military Radios, Radar, & ECM General Description Functional Diagram The HMC346ALC3B is an absorptive Voltage Variable Attenuator (VVA) in a leadless Pb free RoHS com- pliant SMT mount ceramic package operating from DC - 18 GHz. It features an on-chip reference atten- uator 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. The HMC346ALC3B allows the use of surface mount manufacturing techniques. Electrical Specifications, T = +25 C, 50 Ohm system A Parameter Min Typical Max Units DC - 10 GHz 2.0 2.5 dB DC - 14 GHz 2.8 3.2 dB Insertion Loss DC - 18 GHz 3.3 4.0 dB DC - 12 GHz 26 30 dB Attenuation Range DC - 18 GHz 20 24 dB DC - 18 GHz 10 dB Return Loss Min. Atten: +5 dBm Input Power for 0.25 dB Compression (0.5 - 18 GHz) Atten. >2 dB: +4 dBm Input Third Order Intercept (0.5 - 18 GHz) Min. Atten: +30 dBm (Two-tone Input Power = -8 dBm Each Tone) Atten. >2 dB: +8 dBm Switching Characteristics tRISE, tFALL (10/90% RF): 8 ns tON, tOFF (50% CTL to 10/90% RF): 16 ns 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 license is granted by implication or otherwise under any patent or patent rights of Analog Devices. 8 - 1 Trademarks and registered trademarks are the property of their respective owners. Application Support: Phone: 1-800-ANALOG-D ATTENUATORS - SMTHMC346ALC3B v02.0717 GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 18 GHz 8 Relative Attenuation Insertion Loss vs. Temperature 0 0 -1 -10 -2 -20 -3 -30 -4 -40 -5 0 2 4 6 8 10 12 14 16 18 0 2 4 6 8 10 12 14 16 18 FREQUENCY (GHz) FREQUENCY (GHz) 5 dB 20 dB Max 10dB 25 dB +25 C +85 C -40 C 15 dB 30dB Relative Attenuation vs. Control Voltage 10 GHz Return Loss vs. Attenuation 0 0 -0.5 -5 -1 -10 -1.5 -15 -2 -20 -2.5 -25 -3 -30 -3.5 -4 -35 0 5 10 15 20 25 30 0 2 4 6 8 10 12 14 16 18 RELATIVE ATTENUATION (dB) FREQUENCY (GHz) Min 5 dB Max V1 V2 Relative Phase vs. Attenuation Input IP3 vs. Attenuation* 180 40 35 150 30 120 25 90 20 15 60 10 30 5 0 0 0 2 4 6 8 10 12 14 16 18 0 2 4 6 8 10 12 14 16 18 FREQUENCY (GHz) FREQUENCY (GHz) 5 dB 20 dB Max 0 dB 6 dB 10dB 25 dB 15 dB 30dB 3 dB 10 dB *Two-tone input power = -8 dBm each tone, 1 MHz spacing. 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 RELATIVE PHASE (deg) RETURN LOSS (dB) INSERTION LOSS (dB) INPUT IP3 (dBm) CONTROL VOLTAGE (Vdc) ATTENUATION (dB) ATTENUATORS - SMT