Overview
The HMC941A, produced by Analog Devices Inc., is a broadband 5-bit GaAs IC digital attenuator MMIC chip. 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 of 15.5 dB. It is designed with a single positive control line per bit, ensuring precise control over the attenuation levels.
Key Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 0.1 GHz to 30 GHz |
| Attenuation Steps | 0.5 dB, 1 dB, 2 dB, 4 dB, 8 dB |
| Total Attenuation | 15.5 dB |
| Insertion Loss (Typical) | < 4 dB |
| Input IP3 (Two-Tone Input Power = +8 dBm Each Tone) | +45 dBm |
| Switching Characteristics (tRISE, tFALL) | 35 ns (10/90% RF) |
| Switching Characteristics (tON/tOFF) | 50 ns (50% CTL to 10/90% RF) |
| Supply Current (Idd) | 3 mA to 7 mA |
| Supply Voltage | +5V (Vdd), -5V (Vss) |
| Operating Temperature | -55°C to +85°C |
| Storage Temperature | -65°C to +150°C |
| Package Type | Die or Chip |
| Number of Terminals | 9 |
Key Features
- Broadband operation from 0.1 GHz to 30 GHz
- 0.5 dB LSB steps for precise attenuation control
- Single positive control line per bit
- High input IP3 of +45 dBm
- Low insertion loss of less than 4 dB typical
- Compact die size: 2.29 mm x 0.96 mm x 0.1 mm
- ESD sensitivity: Class 1A
Applications
- Fiber Optics and Broadband Telecommunications
- Microwave Radio and VSAT
- Military Radios, Radar, and Electronic Countermeasures (ECM)
- Space Applications
Q & A
- What is the frequency range of the HMC941A?
The HMC941A operates from 0.1 GHz 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. - What is the total attenuation of the HMC941A?
The total attenuation is 15.5 dB. - What is the typical insertion loss of the HMC941A?
The typical insertion loss is less than 4 dB. - What is the input IP3 of the HMC941A?
The input IP3 is +45 dBm (Two-Tone Input Power = +8 dBm Each Tone). - 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 are the supply voltage and current requirements of the HMC941A?
The supply voltage is +5V (Vdd) and -5V (Vss), and the supply current ranges from 3 mA to 7 mA. - What is the operating temperature range of the HMC941A?
The operating temperature range is -55°C to +85°C. - What is the storage temperature range of the HMC941A?
The storage temperature range is -65°C to +150°C. - In what applications is the HMC941A commonly used?
The HMC941A is commonly used in Fiber Optics and Broadband Telecommunications, Microwave Radio and VSAT, Military Radios, Radar, and ECM, and Space Applications.
