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Jun 12, 2025

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Microchip Unveils Next-Generation Low-Noise Chip-Scale Atomic Clock (LN-CSAC)

Microchip Technology has launched its latest innovation in precise timing solutions: the second-generation Low-Noise Chip-Scale Atomic Clock (LN-CSAC), model SA65-LN. This cutting-edge device combines ultra-clean timing with a compact design, meeting the demanding requirements of aerospace and defense applications.

 

What is LN-CSAC?

The SA65-LN is a next-gen Chip-Scale Atomic Clock, specifically engineered for systems requiring precise and stable timing under size, weight, and power (SWaP) constraints. Traditional atomic clocks are often too large or power-intensive, while satellite-based timing references may not always be reliable in certain mission-critical conditions.

 

The LN-CSAC offers a revolutionary design with advanced features, including:

  • Compact Size: A profile height of less than ½ inch.
  • Low Power Consumption: Operates at <295 mW, ideal for battery-powered devices.
  • Wide Temperature Range: Functions reliably in extreme conditions ranging from -40°C to +80°C.

 

Key Applications

The LN-CSAC is designed to meet the unique demands of aerospace and defense sectors, making it ideal for:

  • Mobile Radar Systems
  • Dismounted Radios
  • IED Jamming Systems
  • Unmanned Vehicles
  • Autonomous Sensor Networks

These applications benefit from the clock’s compact form, low power needs, and high stability, ensuring reliable performance even in harsh environments.

 

Advanced Features and Benefits

 

  1. EMXO Technology

Microchip has integrated its Evacuated Miniature Crystal Oscillator (EMXO) into the SA65-LN. This combination provides:

  • Low Phase Noise: 10 Hz < -120 dBc/Hz.
  • Allan Deviation Stability: <1E-11 at a 1-second averaging time.

 

  1. Atomic-Level Accuracy
  • Initial Accuracy: ±0.5 ppb.
  • Low Frequency Drift: <0.9 ppb/month.
  • Temperature-Induced Errors: < ±0.3 ppb.

 

  1. Design Efficiency

The LN-CSAC eliminates the need for two oscillators, reducing board space and design complexity while maintaining high signal integrity. Its low-phase noise ensures superior signal clarity for frequency mixing.

 

Development Tools

Microchip supports developers with tools to simplify integration:

  • Clockstudio™ Software Tool: A GUI for toggling between clock features and monitoring operating parameters.
  • LN-CSAC Developer Kit: Enables seamless prototyping and evaluation.

 

Industry Impact

Randy Brudzinski, corporate vice president of Microchip’s frequency and time systems business unit, emphasizes the significance of the SA65-LN:
“Our next-generation LN-CSAC delivers exceptional stability and precision in a compact form, enabling customers to achieve superior signal clarity and atomic-level accuracy with reduced design complexity and power consumption.”

 

Microchip’s Aerospace and Defense Expertise

Microchip is renowned for its reliable and durable solutions tailored to aerospace and defense markets. Its portfolio includes:

  • Microcontrollers (MCUs) and Microprocessors (MPUs).
  • FPGAs, power management, and secure memory solutions.
  • Timing devices like the LN-CSAC that ensure optimal performance for applications such as avionics, radar, and secure communications.

 

Microchip’s SA65-LN Low-Noise Chip-Scale Atomic Clock sets a new standard for precision timing in mission-critical applications. By offering atomic-level accuracy, reduced power consumption, and compact design, it enables developers to overcome SWaP challenges while maintaining performance and reliability.






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