Overview
The HMC939ALP4E is a 5-bit digital attenuator produced by Analog Devices Inc. This component is designed to provide precise attenuation control over a wide frequency range, making it suitable for various high-frequency applications. It features a 31 dB attenuation control range in 1 dB steps, ensuring fine-tuned control over signal levels. The attenuator is built using GaAs MMIC (Monolithic Microwave Integrated Circuit) technology, which offers excellent performance in terms of insertion loss, attenuation accuracy, and input linearity.
Key Specifications
| Parameter | Value |
|---|---|
| Attenuation Range | 1 dB to 31 dB in 1 dB steps |
| Insertion Loss | 6 dB typical at 33 GHz |
| Attenuation Accuracy | ±0.5 dB typical |
| Input Linearity (P0.1dB) | 24 dBm typical |
| Third-order Intercept (IP3) | 40 dBm typical |
| Power Handling | 27 dBm |
| Supply Voltages | VDD = +5 V, VSS = -5 V |
| Control Interface | CMOS-/TTL-compatible parallel control |
| Package Type | 24-lead, 4 mm × 4 mm LFCSP |
| Frequency Range | 100 MHz to 33 GHz |
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
- Dual-supply operation: ±5 V
- CMOS-/TTL-compatible parallel control interface
- Bidirectional operation with internally matched 50 Ω RF ports
- No external matching components or dc blocking capacitors required when RF line potential is 0 V
Applications
- Test instrumentation
- Microwave radios and very small aperture terminals (VSATs)
- Military radios, radars, and electronic counter measures (ECMs)
- Broadband telecommunications systems
Q & A
- What is the attenuation range of the HMC939ALP4E?
The HMC939ALP4E has an attenuation range of 1 dB to 31 dB in 1 dB steps. - What is the typical insertion loss at 33 GHz?
The typical insertion loss at 33 GHz is 6 dB. - What is the attenuation accuracy of the HMC939ALP4E?
The attenuation accuracy is ±0.5 dB typical. - What are the supply voltages required for the HMC939ALP4E?
The HMC939ALP4E requires dual supply voltages: VDD = +5 V and VSS = -5 V. - What type of control interface does the HMC939ALP4E use?
The HMC939ALP4E uses a CMOS-/TTL-compatible parallel control interface. - What is the frequency range of the HMC939ALP4E?
The frequency range is from 100 MHz to 33 GHz. - What is the power handling capability of the HMC939ALP4E?
The power handling capability is 27 dBm. - Is the HMC939ALP4E bidirectional?
Yes, the HMC939ALP4E is bidirectional. - What type of package does the HMC939ALP4E come in?
The HMC939ALP4E comes in a 24-lead, 4 mm × 4 mm LFCSP package. - What are some common applications of the HMC939ALP4E?
Common applications include test instrumentation, microwave radios, VSATs, military radios, radars, ECMs, and broadband telecommunications systems.
