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attenuators - analog - Chip
PRELIMINARY
v01.0117
0 Typical Applications
The HMC985A is ideal for: • Point-to-Point Radio • VSAT Radio • Test Instrumentation • Microwave Sensors • Military, ECM & Radar
Functional Diagram
HMC985A
GaAs MMIC VOLTAGE - VARIABLE ATTENUATOR, 20 - 50 GHz
Features
Wide Bandwidth: 20 - 50 GHz
Excellent Linearity: +32 dB Input IP3
Wide Attenuation Range: 37 dB
Die Size: 2.78 x 1.41 x 0.1 mm
General Description
The HMC985A is an absorptive Voltage Variable Attenuator (VVA) which operates from 20 - 50 GHz and is ideal in designs where an analog DC control signal must be used to control RF signal levels over a 37 dB dynamic range. It features two shunt-type attenuators which are controlled by two analog voltages, Vctrl1 and Vctrl2.