LMX2581SQX/NOPB

Product Overview

Category

The LMX2581SQX/NOPB belongs to the category of integrated circuits (ICs) and specifically falls under the family of frequency synthesizers.

Use

This product is primarily used in electronic devices that require precise frequency synthesis, such as communication systems, radar systems, and test equipment. It enables the generation of stable and accurate frequencies for various applications.

Characteristics

• High-frequency accuracy and stability
• Wide frequency range coverage
• Low phase noise
• Fast frequency switching capability
• Compact and space-saving design

Package

The LMX2581SQX/NOPB comes in a small outline package (SOP) with a specific pin configuration for easy integration into circuit boards.

Essence

The essence of the LMX2581SQX/NOPB lies in its ability to generate highly accurate and stable frequencies, making it an essential component in modern electronic systems that rely on precise timing and synchronization.

Packaging/Quantity

This product is typically packaged in reels or tubes, containing a specified quantity of ICs per package. The exact packaging and quantity may vary depending on the supplier and customer requirements.

Specifications

• Frequency Range: 10 MHz to 15 GHz
• Frequency Resolution: 1 Hz
• Phase Noise: -120 dBc/Hz at 1 kHz offset
• Supply Voltage: 3.3 V
• Operating Temperature Range: -40°C to +85°C
• Package Type: SOP

Detailed Pin Configuration

The LMX2581SQX/NOPB has a total of 32 pins, each serving a specific function. The detailed pin configuration is as follows:

1. VDDA: Analog power supply
2. VDDC: Core power supply
3. GND: Ground
4. XTALN: Crystal oscillator input
5. XTALP: Crystal oscillator input
6. VDDO: Output power supply
7. GND: Ground
8. RFOUTB: RF output B
9. RFOUTA: RF output A
10. GND: Ground
11. GND: Ground
12. GND: Ground
13. GND: Ground
14. GND: Ground
15. GND: Ground
16. GND: Ground
17. GND: Ground
18. GND: Ground
19. GND: Ground
20. GND: Ground
21. GND: Ground
22. GND: Ground
23. GND: Ground
24. GND: Ground
25. GND: Ground
26. GND: Ground
27. GND: Ground
28. GND: Ground
29. GND: Ground
30. GND: Ground
31. GND: Ground
32. GND: Ground

Functional Features

• Frequency synthesis with high accuracy and stability
• Programmable frequency resolution
• Fast frequency switching capability
• Low phase noise for improved signal quality
• Integrated crystal oscillator for simplified design
• Power supply voltage regulation for reliable operation

Advantages and Disadvantages

Advantages

• High-frequency accuracy enables precise timing in electronic systems.
• Wide frequency range coverage caters to various applications.
• Low phase noise ensures clean and reliable signal transmission.
• Compact package size allows for space-saving integration.
• Fast frequency switching enhances system flexibility.

Disadvantages

• Relatively higher cost compared to simpler frequency generation solutions.
• Requires careful consideration of power supply and grounding for optimal performance.
• Limited availability of alternative models from different manufacturers.

Working Principles

The LMX2581SQX/NOPB operates based on the principle of phase-locked loop (PLL) frequency synthesis. It utilizes an internal crystal oscillator or an external reference input to generate a stable reference frequency. This reference frequency is then multiplied and divided to achieve the desired output frequency with high accuracy and stability. The PLL feedback loop continuously adjusts the output frequency to maintain synchronization with the reference signal.

Detailed Application Field Plans

The LMX2581SQX/NOPB finds extensive use in various applications, including:

1. Communication Systems: Enables precise frequency generation for wireless communication devices, base stations, and satellite communication systems.
2. Radar Systems: Provides accurate timing and synchronization for radar signal processing, target detection, and tracking.
3. Test Equipment: Facilitates frequency calibration and signal generation in test and measurement instruments, such as spectrum analyzers and signal generators.
4. Satellite Navigation: Supports precise timing and frequency synchronization in global navigation satellite systems (GNSS), such as GPS and Galileo.
5. Industrial Automation: Enables precise timing and synchronization in industrial control systems, robotics, and motion control applications.

Detailed and Complete Alternative Models

While the LMX2581SQX/NOPB is a