Overview
The HMC812ALC4 is an absorptive Voltage Variable Attenuator (VVA) manufactured by Analog Devices Inc. This component operates within the frequency range of 5 to 30 GHz, making it ideal for designs that require analog DC control to adjust RF signal levels over a 30 dB amplitude range. It features two shunt-type attenuators controlled by two analog voltages, Vctrl1 and Vctrl2, allowing for precise control and optimal linearity performance. The HMC812ALC4 is housed in a RoHS compliant 4x4 mm QFN leadless ceramic package, ensuring compact and reliable integration into various RF systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Frequency Range | 5 - 30 | GHz |
| Attenuation Range | 30 | dB |
| Input P1dB | +25 | dBm |
| Input IP3 | +28 | dBm |
| Package Type | 24-Lead Ceramic Leadless Chip Carrier (LCC) | |
| Package Size | 4x4 mm | |
| Lead Finish | Gold over Nickel | |
| MSL Rating | MSL3 |
Key Features
- Wide bandwidth operation from 5 to 30 GHz
- High power handling with +25 dBm input P1dB and +28 dBm input IP3
- 30 dB attenuation range controlled by two analog voltages (Vctrl1 and Vctrl2)
- Optimal linearity performance achieved through staged control of Vctrl1 and Vctrl2
- Compact 4x4 mm QFN leadless ceramic package
- RoHS compliant
Applications
- Point-to-Point Radio
- VSAT Radio
- Test Instrumentation
- Microwave Sensors
- Military, ECM & Radar systems
- Automatic Gain Control (AGC) circuits
Q & A
- What is the frequency range of the HMC812ALC4?
The HMC812ALC4 operates from 5 to 30 GHz.
- What is the attenuation range of the HMC812ALC4?
The attenuation range is 30 dB.
- How is the attenuation controlled in the HMC812ALC4?
The attenuation is controlled by two analog voltages, Vctrl1 and Vctrl2.
- What is the input P1dB of the HMC812ALC4?
The input P1dB is +25 dBm.
- What is the input IP3 of the HMC812ALC4?
The input IP3 is +28 dBm.
- What type of package does the HMC812ALC4 come in?
The HMC812ALC4 is housed in a 24-Lead Ceramic Leadless Chip Carrier (LCC) package.
- Is the HMC812ALC4 RoHS compliant?
Yes, the HMC812ALC4 is RoHS compliant.
- What are some typical applications of the HMC812ALC4?
Typical applications include Point-to-Point Radio, VSAT Radio, Test Instrumentation, Microwave Sensors, and Military, ECM & Radar systems.
- How should the circuit board be designed for the HMC812ALC4?
The circuit board should use RF circuit design techniques with 50 Ohm impedance signal lines and proper grounding of the package leads and exposed paddle.
- Is an evaluation board available for the HMC812ALC4?
Yes, an evaluation board (EV1HMC812ALC4) is available from Analog Devices.
