HMC985 Voltage Variable Attenuator, 20 - 50 GHz
The HMC985 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 35 dB dynamic 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 first attenuation stage from -3V to 0V with Vctrl2 fixed at -3V. The control voltage of the second attenuation stage, Vctrl2, should then be varied from -3V to 0V with Vctrl1 fixed at 0V. 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.
技术特性
- Wide Bandwidth: 20 - 50 GHz
- Excellent Linearity: +32 dB Input IP3
- Wide Attenuation Range: 35 dB
- Die Size: 2.78 x 1.37 x 0.1 mm
订购信息 Ordering Information
应用领域 APPLICATION
- Point-to-Point Radio
- VSAT radio
- Test Instrumentation
- Microwave Sensors
- Military, ECM & Radar
|
技术指标
| Freq. (GHz) |
Function |
Loss (dB) |
Atten. Range (dB) |
IIP3 (dBm) |
Control Input (Vdc) |
Package |
| 20 - 50 |
Analog VVA |
3 |
0 to 35 |
33 |
0 to -3V |
Chip |
功能框图 Functional Block Diagram
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