Overview
The HMC941A is a broadband 5-bit GaAs IC digital attenuator MMIC chip manufactured by Analog Devices Inc. This component operates over a wide frequency range of 0.1 to 30 GHz, making it highly versatile for various high-frequency applications. The attenuator features 0.5 dB least significant bit (LSB) steps, providing a total attenuation range of 15.5 dB. It is designed for use in environments requiring precise control over signal attenuation, such as in telecommunications, military, and space applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Frequency Range | 0.1 - 30 | GHz |
| Insertion Loss | < 4 | dB |
| Attenuation Steps | 0.5, 1, 2, 4, 8 | dB |
| Total Attenuation | 15.5 | dB |
| Input IP3 | +45 | dBm |
| Switching Characteristics (tRISE, tFALL) | 35 ns | |
| Switching Characteristics (tON/tOFF) | 50 ns | |
| Supply Current (Idd) | 3 - 5 mA | |
| Supply Current (Iss) | -4 - -6 mA | |
| Operating Temperature | -55 to +85 | °C |
| Die Size | 2.29 mm x 0.96 mm x 0.1 mm |
Key Features
- Broadband operation from 0.1 to 30 GHz
- 5-bit digital attenuator with 0.5 dB LSB steps
- Total attenuation of 15.5 dB
- High input IP3 of +45 dBm
- Fast switching characteristics with tRISE and tFALL of 35 ns and tON/tOFF of 50 ns
- Low insertion loss of less than 4 dB typical
- Single positive control line per bit
- Compact die size of 2.29 mm x 0.96 mm x 0.1 mm
Applications
- Fiber Optics and Broadband Telecommunications
- Microwave Radio and VSAT (Very Small Aperture Terminal)
- Military Radios, Radar, and Electronic Countermeasures (ECM)
- Space Applications
Q & A
- What is the frequency range of the HMC941A?
The HMC941A operates over a frequency range of 0.1 to 30 GHz.
- What are the attenuation steps of the HMC941A?
The attenuation steps are 0.5 dB, 1 dB, 2 dB, 4 dB, and 8 dB, providing a total attenuation of 15.5 dB.
- What is the insertion loss of the HMC941A?
The insertion loss is less than 4 dB typical.
- What is the input IP3 of the HMC941A?
The input IP3 is +45 dBm.
- What are the switching characteristics of the HMC941A?
The switching characteristics include tRISE and tFALL of 35 ns and tON/tOFF of 50 ns.
- What is the supply current range of the HMC941A?
The supply current (Idd) ranges from 3 to 5 mA, and the supply current (Iss) ranges from -4 to -6 mA.
- What is the operating temperature range of the HMC941A?
The operating temperature range is from -55°C to +85°C.
- What are the typical applications of the HMC941A?
Typical applications include Fiber Optics and Broadband Telecommunications, Microwave Radio and VSAT, Military Radios, Radar, and ECM, and Space Applications.
- What is the die size of the HMC941A?
The die size is 2.29 mm x 0.96 mm x 0.1 mm.
- How is the HMC941A controlled?
The HMC941A is controlled by a single positive control line per bit.
