HMC472ALP4 is a high-performance GaAs MMIC voltage-controlled attenuator by Analog Devices (formerly Hittite
Specifications
MFR:
ADI
Product Number:
HMC472ALP4
Description:
RF ATTENUATOR 31.5DB 50OHM 24QFN
Highlight:
GaAs MMIC voltage-controlled attenuator
,Analog Devices voltage-controlled attenuator
,HMC472ALP4 RF attenuator
Introduction
HMC472ALP4 GaAs MMIC Voltage-Controlled Attenuator
The HMC472ALP4 is a high-performance GaAs MMIC (Monolithic Microwave Integrated Circuit) voltage-controlled attenuator manufactured by Analog Devices (formerly Hittite Microwave Corporation). Designed for RF and microwave applications, it offers precise, voltage-controlled attenuation of radio frequency signals with excellent linearity and wide frequency coverage, making it suitable for wireless communication systems, radar, and test equipment.
Core Features
Attenuation Performance
- Attenuation Range: 0 dB to 31 dB, providing a wide range of signal strength adjustment capabilities.
- Control Voltage Range: 0 V to -5 V, allowing straightforward analog control of attenuation levels. The attenuation increases linearly with the magnitude of the control voltage (more negative voltage = higher attenuation).
- Frequency Coverage: 10 MHz to 6 GHz, supporting a broad spectrum of applications including cellular (5G/4G), Wi-Fi, satellite communications, and radar systems.
- Attenuation Accuracy: ±1 dB typical across the entire range, ensuring consistent and reliable signal level adjustment.
RF Performance
- Insertion Loss: Typically 1.5 dB at 2 GHz (0 dB attenuation state), minimizing signal degradation when operating at minimum attenuation.
- Return Loss: Better than 15 dB (typical) across the frequency range, ensuring good impedance matching to 50 Ω systems and reducing signal reflections.
- Linearity: Excellent linearity with OIP3 (Output Third-Order Intercept Point) of +40 dBm (typical), making it suitable for high-power signal environments without significant distortion.
- Power Handling: Up to +27 dBm (500 mW) average input power, allowing operation in high-power RF systems.
- Amplitude Flatness: ±0.5 dB typical across the frequency band, ensuring consistent attenuation performance over the entire operating range.
Electrical Characteristics and Operation
- Control Voltage Sensitivity: Approximately 6.2 dB/V, providing predictable and linear attenuation response to control voltage changes.
- Switching Speed: Fast settling time of typically 1 µs, enabling rapid adjustment of attenuation levels for dynamic signal environments.
- Temperature Stability: Excellent temperature stability of ±0.01 dB/°C (typical), ensuring consistent performance across varying operating temperatures.
Power Supply and Packaging
- Power Supply: Single positive supply voltage of +5 V, with low current consumption of 10 mA (typical), making it suitable for power-constrained applications.
- Package: 4-lead SOT-23 surface-mount package, measuring 2.9 mm * 2.8 mm. This compact package is ideal for space-constrained RF designs and offers ease of assembly.
- Operating Temperature Range: -40°C to +85°C, ensuring reliable operation in industrial and harsh environmental conditions.
Typical Applications
| Application Field | Specific Use Cases |
|---|---|
| Wireless Communication |
|
| Radar and Sensing |
|
| Test and Measurement |
|
| Satellite and Aerospace |
|
| Broadband Systems |
|
Key Advantages
- Wide Frequency Coverage: 10 MHz to 6 GHz operation supports a diverse range of current and emerging wireless standards.
- Linear Attenuation Response: Provides predictable attenuation characteristics over the entire control voltage range, simplifying system calibration.
- Excellent RF Performance: Low insertion loss, high return loss, and superior linearity minimize signal degradation and distortion.
- Compact Size: Small SOT-23 package saves board space, making it suitable for miniaturized RF designs.
- Easy Integration: Simple analog voltage control simplifies system design and integration with control circuits.
- Temperature Stability: Consistent performance across temperature extremes ensures reliability in harsh environments.
The HMC472ALP4 is a versatile voltage-controlled attenuator that delivers high performance across a broad frequency range, making it an excellent choice for various RF and microwave systems requiring precise and dynamic signal level control.
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