HMC557ALC4 Overview
The HMC557ALC4 is a high-performance voltage-controlled oscillator (VCO) designed for precision frequency generation in microwave and RF applications. Covering a wide frequency range from 8.5 GHz to 10.5 GHz, it delivers low phase noise and stable output power, making it ideal for communication systems, test equipment, and radar technologies. The device integrates a low noise buffer amplifier and features a compact surface-mount package, ensuring ease of integration and reliable operation. Engineers and sourcing specialists will appreciate its consistent performance and robust design from IC Manufacturer.
HMC557ALC4 Technical Specifications
| Parameter | Specification |
|---|---|
| Frequency Range | 8.5 GHz to 10.5 GHz |
| Output Power | +5 dBm (typical) |
| Phase Noise @ 100 kHz Offset | -115 dBc/Hz (typical) |
| Supply Voltage | +5 V |
| Current Consumption | 45 mA (typical) |
| Tuning Voltage Range | 0.5 V to 4.5 V |
| Output Impedance | 50 ?? |
| Operating Temperature Range | -40??C to +85??C |
| Package Type | Leadless SMT |
HMC557ALC4 Key Features
- Wide Frequency Coverage: Operating from 8.5 to 10.5 GHz, it supports diverse microwave applications requiring flexible frequency synthesis.
- Low Phase Noise Performance: With phase noise as low as -115 dBc/Hz at 100 kHz offset, the device ensures signal purity essential for sensitive communications and radar systems.
- Integrated Buffer Amplifier: Provides consistent output power and isolation, simplifying system design by reducing the need for additional amplification stages.
- Low Current Consumption: Typical current draw of 45 mA enables efficient power management in battery-powered or energy-sensitive environments.
- Compact Surface-Mount Package: Facilitates easy integration on PCB designs while maintaining mechanical stability and thermal dissipation.
HMC557ALC4 Advantages vs Typical Alternatives
This VCO offers superior frequency stability and lower phase noise compared to many standard oscillators, enhancing signal integrity in critical microwave systems. Its integrated buffer and low current consumption improve reliability and efficiency, reducing the need for external components. Additionally, the broad tuning voltage range provides flexible control, making it preferable for applications demanding precise frequency agility and long-term performance.
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Typical Applications
- Microwave communication systems requiring stable, low phase noise frequency sources for transmitters and receivers, ensuring high-quality signal transmission and reception.
- Phase-locked loops (PLLs) in test and measurement equipment where accurate frequency control is essential for calibration and signal analysis.
- Radar systems that depend on precise microwave frequency generation for target detection and ranging accuracy.
- Electronic warfare and defense applications requiring compact, reliable oscillators with rapid tuning capabilities.
HMC557ALC4 Brand Info
The HMC557ALC4 is produced by a leading semiconductor company renowned for delivering high-reliability RF and microwave components. Designed with advanced GaAs MMIC technology, this oscillator reflects the brand??s commitment to innovation and quality in industrial and defense markets. The product line is supported by comprehensive application notes, design resources, and responsive technical support to assist engineers in achieving optimal system performance.
FAQ
What is the tuning voltage range of the HMC557ALC4?
The tuning voltage range spans from 0.5 V to 4.5 V, allowing precise frequency control over the full 8.5 GHz to 10.5 GHz band. This broad range supports fine frequency adjustments in various RF applications.
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How does the phase noise performance benefit system design?
Low phase noise reduces signal jitter and spectral spreading, which improves overall system sensitivity and fidelity. This is critical in communication and radar systems where signal clarity directly affects performance and detection accuracy.
What packaging options are available for this oscillator?
The device is offered in a compact leadless surface-mount package that enables easy PCB assembly with reduced parasitic effects





