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HMC812 Voltage Variable Attenuator SMT, 5 - 30 GHz

Point-to-Point Radio VSAT Radio Test Instrumentation Microwave Sensors Military, ECM & Radar

The HMC812LC4 is an absorptive Voltage Variable Attenuator (VVA) which operates from 5 - 30 GHz and is ideal in designs where an analog DC control signal must be used to control RF signal levels over a 30 dB amplitude range. It features two shunt-type attenuators which are controlled by two analog voltages, Vctrl1 and Vctrl2. Optimum linearity performance of the attenuator is achieved by first varying Vctrl1 of the 1st attenuation stage from -3V to 0V with Vctrl2 fixed at -3V. The control voltage of the 2nd attenuation stage, Vctrl2, should then be varied from -3V to 0V, with Vctrl1 fixed at 0V. The HMC812LC4 is housed in a RoHS compliant 4x4 mm QFN leadless ceramic package.

However, if the Vctrl1 and Vctrl2 pins are connected together it is possible to achieve the full analog attenuation range with only a small degradation in input IP3 performance. Applications include AGC circuits and temperature compensation of multiple gain stages in microwave point-to-point and VSAT radios.

Applications

Data Sheets

Order Information

Evaluation Boards

Reference Materials

• Quality Documentation：Package/Assembly Qualification Test Report: LC4, LC4B (QTR: 2014-00380 REV: 01)
• Tape & Reel Specification：4 x 4 mm QFN Tape Specification (LP4, LP4B, LP4C, LC4, LC4B)