Overview
The HMC939ALP4E is a 5-bit digital attenuator produced by Analog Devices Inc. This component offers a 31 dB attenuation control range in 1 dB steps, making it highly versatile for various high-frequency applications. It is designed to provide optimum insertion loss, attenuation accuracy, and input linearity over a wide frequency range from 100 MHz to 33 GHz.
Key Specifications
| Parameter | Min. | Typ. | Max. | Units |
|---|---|---|---|---|
| Frequency Range | 0.1 | - | 33.0 | GHz |
| Attenuation Range | - | - | 31 | dB |
| Attenuation Step Size | - | 1 | - | dB |
| 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 |
| Return Loss (RF1 & RF2, All Atten. States) | - | - | 12 | dB |
| Attenuation Accuracy (1.0-15 dB States) | - | ±(0.5 + 5%) of Atten. Setting | - | dB |
| Input Power for 0.1 dB Compression (0.1-0.5 GHz) | - | 20 | - | dBm |
| Input Third Order Intercept Point (Two-Tone Input Power= 0 dBm Each Tone) | - | 40 | - | dBm |
| Supply Voltage (Positive) | - | +5 | +7 | V |
| Supply Voltage (Negative) | -7 | -5 | - | V |
| Package Type | - | - | 24-lead, 4 mm × 4 mm LFCSP | - |
Key Features
- 5-bit digital attenuator with 31 dB attenuation control range in 1 dB steps.
- Optimum insertion loss, attenuation accuracy, and input linearity over the specified frequency range from 100 MHz to 33 GHz.
- Dual-supply operation: VDD = +5 V and VSS = −5 V.
- CMOS-/TTL-compatible parallel control interface.
- Bidirectional operation with internally matched 50 Ω RF1 and RF2 pins.
- No external matching components or dc blocking capacitors required when RF line potential is equal to 0 V.
- High input IP3: +43 dBm.
- Low current consumption.
Applications
- Test instrumentation.
- Microwave radios and very small aperture terminals (VSATs).
- Military radios, radars, and electronic counter measures (ECMs).
- Broadband telecommunications systems.
- Fiber optics and broadband telecom.
- Space applications.
- Sensors.
- Test and measurement equipment.
Q & A
- What is the frequency range of the HMC939ALP4E?
The HMC939ALP4E operates over a frequency range from 100 MHz to 33 GHz.
- What is the attenuation range of the HMC939ALP4E?
The HMC939ALP4E has an attenuation range of 31 dB in 1 dB steps.
- What are the supply voltage requirements for the HMC939ALP4E?
The HMC939ALP4E requires dual supply voltages: VDD = +5 V and VSS = −5 V.
- What is the control interface of the HMC939ALP4E?
The HMC939ALP4E has a CMOS-/TTL-compatible parallel control interface.
- What is the package type of the HMC939ALP4E?
The HMC939ALP4E is packaged in a 24-lead, 4 mm × 4 mm LFCSP package.
- What are the typical insertion loss values for the HMC939ALP4E?
The typical insertion loss values are 4.0 dB (0.1-18 GHz), 5.5 dB (18-26.5 GHz), and 6.5 dB (26.5-33 GHz).
- What is the return loss of the HMC939ALP4E?
The return loss is typically 12 dB across all attenuation states.
- What is the input power for 0.1 dB compression?
The input power for 0.1 dB compression is 20 dBm (0.1-0.5 GHz) and 25 dBm (0.5-33 GHz).
- What is the input third order intercept point (IIP3) of the HMC939ALP4E?
The IIP3 is typically +43 dBm.
- In what applications is the HMC939ALP4E commonly used?
The HMC939ALP4E is commonly used in test instrumentation, microwave radios, VSATs, military radios, radars, ECMs, broadband telecommunications systems, and more.
