Overview
The HMC939LP4ETR 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. It is available in a low-cost, leadless surface-mount package, specifically a 24-lead VFQFN exposed pad package, which is RoHS compliant.
Key Specifications
| Parameter | Min. | Typ. | Max. | Units |
|---|---|---|---|---|
| Frequency Range | 0.1 | - | 33.0 | GHz |
| Insertion Loss (0.1 - 18 GHz) | - | 4.0 | 5.5 | dB |
| Insertion Loss (18 - 26.5 GHz) | - | 5.5 | 7.0 | dB |
| Insertion Loss (26.5 - 33 GHz) | - | 6.5 | 8.5 | dB |
| Attenuation Range | - | - | 31 | dB |
| Attenuation Accuracy (1-15 dB) | - | ±0.4 | - | dB |
| Input IP3 | - | +43 | - | dBm |
| Return Loss (RF1 & RF2, All Attenuation States) | - | - | 12 | dB |
| Supply Voltages (VDD, VSS) | +5V, -5V | - | - | V |
| Operating Temperature | -40 | - | 85 | °C |
Key Features
- 5-bit digital attenuator with 1 dB least significant bit (LSB) steps to 31 dB.
- CMOS-/TTL-compatible parallel control interface.
- Dual-supply operation: VDD = +5 V and VSS = -5 V.
- High input linearity with 0.1 dB compression point at 24 dBm typical.
- High third-order intercept point (IP3) of +43 dBm typical.
- Compact 24-lead VFQFN exposed pad package, RoHS compliant.
- Excellent attenuation accuracy with ±0.4 dB typical step error.
Applications
- Fiber Optics and Broadband Telecommunications.
- Microwave Radio and Very Small Aperture Terminals (VSATs).
- Military Radios, Radar, and Electronic Counter Measures (ECMs).
- Space Applications.
- Sensors.
- Test and Measurement Equipment.
Q & A
- What is the frequency range of the HMC939LP4ETR?
The HMC939LP4ETR operates over a frequency range of 0.1 to 33 GHz.
- What is the attenuation range of the HMC939LP4ETR?
The attenuation range is 31 dB in 1 dB steps.
- What type of control interface does the HMC939LP4ETR use?
The HMC939LP4ETR uses a CMOS-/TTL-compatible parallel control interface.
- What are the supply voltages required for the HMC939LP4ETR?
The component requires dual supply voltages: VDD = +5 V and VSS = -5 V.
- What is the typical insertion loss of the HMC939LP4ETR?
The typical insertion loss is 4.0 dB to 6.5 dB depending on the frequency range.
- What is the input IP3 of the HMC939LP4ETR?
The input IP3 is +43 dBm typical.
- What is the operating temperature range of the HMC939LP4ETR?
The operating temperature range is -40°C to +85°C.
- Is the HMC939LP4ETR RoHS compliant?
Yes, the HMC939LP4ETR is RoHS compliant.
- What package type is the HMC939LP4ETR available in?
The component is available in a 24-lead VFQFN exposed pad package.
- What are some common applications of the HMC939LP4ETR?
Common applications include fiber optics, broadband telecommunications, microwave radio, VSATs, military radios, radar, ECMs, space applications, sensors, and test and measurement equipment.
