The HMC985AlP4KE is an absorptive Voltage Variable attenuator (VVA) which operates from 10 - 40 GHz and is ideal in designs where an analog DC control signal must be used to control RF signal levels over a 35 dB dynamic range. It features two shunt-type attenuators which are controlled by two analog voltages, Vctl1 and Vctl2. Optimum linearity performance of the attenuator is achieved by first varying Vctl1 of the first attenuation stage from -3V to 0V with Vctl2 fixed at -3V. The control voltage of the second attenuation stage, Vctl2, should then be varied from -3V to 0V with Vctl1 fixed at 0V.
If the Vctl1 and Vctl2 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
Features and Benefits
| RF & Microwave |
| Document | note |
| HMC985ALP4KE: GaAs MMIC VOLTAGE - VARIABLE ATTENUATOR, 10 - 40 GHz Data Sheet | PDF 2.1 M |
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|---|---|---|---|---|---|
| HMC985ALP4KE Pre-Release | 24 ld QFN (4x4mm w/2.8mm ep) | OTH 50 | -40 to 85C | 24.35 | 19.72 | Y |
