Overview
The HMC812LC4TR, produced by Analog Devices Inc., is an absorptive Voltage Variable Attenuator (VVA) designed to operate within the frequency range of 5 to 30 GHz. This GaAs MMIC (Monolithic Microwave Integrated Circuit) is ideal for applications requiring precise control over RF signal levels using an analog DC control signal. The device features two shunt-type attenuators controlled by two analog voltages, Vctrl1 and Vctrl2, allowing for a wide attenuation range of 30 dB.
The HMC812LC4TR is housed in a RoHS compliant 4x4 mm QFN leadless ceramic package, ensuring compatibility with modern environmental standards. The device is suitable for various high-frequency applications, including point-to-point radio, VSAT radio, test instrumentation, microwave sensors, and military, ECM, and radar systems.
Key Specifications
| Parameter | Min. | Typ. | Max. |
|---|---|---|---|
| Frequency Range | 5 GHz | - | 30 GHz |
| Attenuation Range | - | - | 30 dB |
| Input P1dB | - | +25 dBm | - |
| Input IP3 | - | +28 dBm | - |
| Control Voltage Range (Vctrl1, Vctrl2) | -5 V | - | 0 V |
| Package Type | - | 24-Lead Ceramic QFN | - |
| Package Size | - | 4x4 mm | - |
| Operating Temperature | -40°C | - | +85°C |
| Storage Temperature | -65°C | - | +150°C |
Key Features
- Wide bandwidth operation from 5 to 30 GHz
- High power handling with +25 dBm input P1dB and +28 dBm input IP3
- Wide attenuation range of 30 dB
- Two shunt-type attenuators controlled by two analog voltages (Vctrl1 and Vctrl2)
- Optimum linearity performance achieved through sequential control of Vctrl1 and Vctrl2
- RoHS compliant 4x4 mm QFN leadless ceramic package
- Ground leads and exposed paddle must be connected to the ground plane for optimal performance
Applications
- Point-to-Point Radio
- VSAT Radio
- Test Instrumentation
- Microwave Sensors
- Military, ECM & Radar Systems
- AGC (Automatic Gain Control) circuits
- Temperature compensation of multiple gain stages in microwave systems
Q & A
- What is the frequency range of the HMC812LC4TR?
The HMC812LC4TR operates from 5 to 30 GHz.
- What is the attenuation range of the HMC812LC4TR?
The attenuation range is 30 dB.
- How is the attenuation controlled in the HMC812LC4TR?
The attenuation is controlled by two analog voltages, Vctrl1 and Vctrl2.
- What is the input P1dB and IP3 of the HMC812LC4TR?
The input P1dB is +25 dBm, and the input IP3 is +28 dBm.
- What type of package does the HMC812LC4TR come in?
The device is housed in a 24-Lead Ceramic QFN leadless package.
- Is the HMC812LC4TR RoHS compliant?
Yes, the HMC812LC4TR is RoHS compliant.
- What are the typical applications of the HMC812LC4TR?
Typical applications include point-to-point radio, VSAT radio, test instrumentation, microwave sensors, and military, ECM, and radar systems.
- How should the ground leads and exposed paddle be connected?
The ground leads and exposed paddle must be connected directly to the ground plane.
- What is the operating temperature range of the HMC812LC4TR?
The operating temperature range is from -40°C to +85°C.
- What is the storage temperature range of the HMC812LC4TR?
The storage temperature range is from -65°C to +150°C.
