HMC346LC3B

ATTENUATORS - ANALOG - SMT v06.0514 Typical Applications The HMC346LC3B is ideal for: Test Instrumentation Fiber Optics & Broadband Telecom Microwave Radio & VSAT Military Radios, Radar, & ECM Functional Diagram HMC346LC3B GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 18 GHz 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 General Description The HMC346LC3B is an absorptive Voltage Variable Attenuator (VVA) in a leadless “Pb free” RoHS compliant SMT mount ceramic 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 Min Typical Max Insertion Loss Attenuation Range DC - 10 GHz DC - 14 GHz DC - 18 GHz 1.5 2.0 2.2 2.7 2.8 3.5 DC - 12 GHz 26 30 DC - 18 GHz 22 26 Return Loss DC - 18 GHz 10 Input Power for 0.25 dB Compression (0.5 - 18 GHz) Min. Atten: +8 Atten. >2 dB: -4 Input Third Order Intercept (0.5 - 18 GHz) (Two-tone Input Power = -8 dBm Each Tone) Min. Atten: +25 Atten. >2 dB: +10 Switching Characteristics tRISE, tFALL (10/90% RF): 2 tON, tOFF (50% ...