Overview
The HMC939LP4E is a broadband 5-bit GaAs IC digital attenuator produced by Analog Devices Inc. This component is designed to operate over a wide frequency range of 0.1 to 33 GHz, making it suitable for various high-frequency applications. The attenuator features 1 dB least significant bit (LSB) steps, providing a total attenuation range of 31 dB. It is housed in a compact, 24-lead, 4 mm × 4 mm leadless surface mount (LFCSP) package, which is RoHS compliant.
Key Specifications
| Parameter | Frequency Range | Min. | Typ. | Max. | Units |
|---|---|---|---|---|---|
| Insertion Loss | 0.1 - 18.0 GHz | 4.0 | 5.0 | 5.5 | dB |
| Insertion Loss | 18.0 - 26.5 GHz | 5.5 | 6.5 | 7.0 | dB |
| Insertion Loss | 26.5 - 33.0 GHz | 7.0 | 8.0 | 8.5 | dB |
| Attenuation Range | 0.1 - 33.0 GHz | 31 dB | dB | ||
| Return Loss (RF1 & RF2, All Attenuation States) | 0.1 - 33.0 GHz | 12 dB | dB | ||
| Attenuation Accuracy | 1.0 - 15 dB States | ±0.4 dB | dB | ||
| Attenuation Accuracy | 16 - 31 dB States | ±0.5 dB | dB | ||
| Input IP3 | +43 dBm | dBm | |||
| Supply Voltages | Vdd = +5V, Vss = -5V | V | |||
| Control Voltage | 0 to 5V | V | |||
Key Features
- 1 dB LSB steps to 31 dB attenuation range
- Wide frequency range: 0.1 to 33 GHz
- Low insertion loss: less than 5 dB typical
- High input IP3: +43 dBm
- CMOS-/TTL-compatible parallel control interface
- Dual-supply operation: Vdd = +5V, Vss = -5V
- Compact 24-lead, 4 mm × 4 mm LFCSP package, RoHS compliant
- Excellent attenuation accuracy: ±0.4 dB typical step error
Applications
- Fiber Optics & Broadband Telecommunications
- Microwave Radio & VSAT (Very Small Aperture Terminals)
- Military Radios, Radar & ECM (Electronic Counter Measures)
- Space Applications
- Sensors
- Test & Measurement Equipment
Q & A
- What is the frequency range of the HMC939LP4E?
The HMC939LP4E operates over a frequency range of 0.1 to 33 GHz.
- What is the attenuation range of the HMC939LP4E?
The attenuation range is 31 dB in 1 dB least significant bit (LSB) steps.
- What is the typical insertion loss of the HMC939LP4E?
The typical insertion loss is less than 5 dB.
- What is the input IP3 of the HMC939LP4E?
The input IP3 is +43 dBm.
- What are the supply voltages required for the HMC939LP4E?
The component requires dual supply voltages: Vdd = +5V and Vss = -5V.
- What type of control interface does the HMC939LP4E use?
The HMC939LP4E uses a CMOS-/TTL-compatible parallel control interface.
- What is the package type and size of the HMC939LP4E?
The component is housed in a 24-lead, 4 mm × 4 mm LFCSP package.
- Is the HMC939LP4E RoHS compliant?
- What are some typical applications of the HMC939LP4E?
Typical applications include fiber optics, broadband telecommunications, microwave radio, VSAT, military radios, radar, ECM, space applications, sensors, and test & measurement equipment.
- How accurate is the attenuation of the HMC939LP4E?
The attenuation accuracy is ±0.4 dB typical step error.
