HMC812ALC4TR

HMC812ALC4 is a absorptive voltage variable attenuator (VVA) which operates from 5GHz to 30GHz and is ideal in designs where an analogue DC control signal must be used to control RF signal levels over a 30dB amplitude range. It features two shunt-type attenuators which are controlled by two analogue voltages, Vctrl1 and Vctrl2. Optimum linearity performance of the attenuator is achieved by first varying Vctrl1 of the 1st attenuation stage from -5V to 0V with Vctrl2 fixed at -5V. The control voltage of the 2nd attenuation stage, Vctrl2, should then be varied from -5V to 0V, with Vctrl1 fixed at 0V. Furthermore, if the Vctrl1 and Vctrl2 pins are connected together it is possible to achieve the full analogue attenuation range with only a small degradation in input IP3 performance. It is used in applications such as point-to-point radio, VSAT radio, test instrumentation, microwave sensors, military, ECM & radar etc.

• High power handling is +25dBm typical input P1dB
• Excellent linearity is +28dBm typical input IP3
• Insertion loss is 1.8dBm typical at (5GHZ to 16GHz, TA = +25°C, 50 ohm)
• Input return loss is 10dB typical at (TA = +25°C, 50 ohm)
• Output return loss is 10dB typical at (TA = +25°C, 50 ohm)
• Operating temperature is -40°C to +85°C
• Package style is 24-lead ceramic SMT

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