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Microchip Launches the Next Generation of its Low-Noise Chip-Scale Atomic Clock Featuring a Lower Profile Height of Less Than ½ Inch
The Low-Noise Chip-Scale Atomic Clock, model SA65-LN, enables frequency mixing for battery-powered devices

Developers need ultra-clean timing devices for aerospace and defense applications where size, weight, and power (SWaP) constraints are critical. A Chip-Scale Atomic Clock (CSAC) is an essential reference for these systems, providing the necessary precise and stable timing where traditional atomic clocks are too large or power-hungry and where other satellite-based references may be compromised. Microchip Technology (Nasdaq: MCHP) today announces its second generation Low-Noise Chip-Scale Atomic Clock (LN-CSAC), model SA65-LN, in a lower profile height and designed to operate in a wider temperature range, enabling low phase noise and atomic clock stability in demanding conditions.

Microchip has developed its own Evacuated Miniature Crystal Oscillator (EMXO) technology and integrated it into a CSAC, enabling the model SA65-LN to offer a reduced profile height of less than ½ inch, while maintaining a power consumption of < 295 mW. The new design is optimal for aerospace and defense mission-critical applications such as mobile radar, dismounted radios, dismounted IED jamming systems, autonomous sensor networks and unmanned vehicles due to its compact size, low power consumption and high precision. Operating within a wider temperature range of −40°C to +80°C, the new LN-CSAC is designed to maintain its frequency and phase stability in extreme conditions for enhanced reliability.

"A significant advancement in frequency technology, our next generation LN-CSAC provides exceptional stability and precision in a remarkably compact form," said Randy Brudzinski, corporate vice president of Microchip’s frequency and time systems business unit. "This device enables our customers to achieve superior signal clarity and atomic-level accuracy, while also benefiting from reduced design complexity and lower power consumption.”

The LN-CSAC combines the benefits of a crystal oscillator and an atomic clock in a single compact device. The EMXO offers low-phase noise at 10 Hz < −120 dBc/Hz and Allan Deviation (ADEV) stability < 1E-11 at a 1-second averaging time. The atomic clock provides initial accuracy of ±0.5 ppb, low frequency drift performance of < 0.9 ppb/mo, and maximum temperature-induced errors of < ±0.3ppb. Together, the LN-CSAC can save board space, design time and overall power consumption compared to designs that feature two oscillators.

The crystal signal purity and low-phase noise of LN-CSAC are designed to ensure high-quality signal integrity, which is essential for frequency mixing. The atomic-level accuracy allows for longer intervals between calibrations, which can help extend mission durations and potentially reduce maintenance requirements.

Microchip's products for aerospace and defense are designed to meet the stringent requirements of these markets, offering high reliability, precision and durability. The company’s solutions include microcontrollers (MCUs), microprocessors (MPUs), FPGAs, power management, memory, security and timing devices that ensure optimal performance in mission-critical applications such as avionics, radar systems, and secure communications. Visit Microchip’s aerospace and defense solutions web page for more information.

Development Tools

The LN-CSAC SA65 is supported by Microchip’s Clockstudio™ Software Tool, a Graphical User Interface (GUI), to help developers toggle between the clock’s features and plot their operating parameters. A LN-CSAC Developer Kit is also available.

Pricing and Availability

The LN-CSAC SA65 is now available for purchase in production quantities. For additional information and to purchase, contact a Microchip sales representative, authorized worldwide distributor or visit Microchip’s Purchasing and Client Services website, www.microchipdirect.com.

2025012802 / 28.01.2025 / Electronic-components / Microchip Technology Inc. /

Microchip Launches the Next Generation of its Low-Noise Chip-Scale Atomic Clock Featuring a Lower Profile Height of Less Than ½ Inch
The Low-Noise Chip-Scale Atomic Clock, model SA65-LN, enables frequency mixing for battery-powered devices

New Family of Switchtec™ PCIe® Gen 4.0 16-Lane Switches Provides Versatility for Automotive and Embedded Computing Applications
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Microchip Adds MTCH2120 to its Portfolio of Turnkey Capacitive Touch Controllers
The touch controller is designed to integrate with a comprehensive ecosystem of tools to streamline development and speed time to market

Integrated and Compact CAN FD System Basis Chip Solution for Space-Constrained Applications
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Microchip Expands PolarFire® FPGA and SoC Solution Stacks with New Offerings for Medical Imaging and Smart Robotics
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Microchip to Accelerate Real-time Edge AI with NVIDIA Holoscan
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Introducing a Wide Portfolio of IGBT 7 Power Devices Optimized for Applications Across Sustainability, E-Mobility and Data Centers
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Microchip Expands 64-bit Portfolio with High-Performance, Post-Quantum Security-Enabled PIC64HX Microprocessors
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Microchip’s RTG4™ FPGAs with Lead-Free Flip-Chip Bumps Achieve Highest Space Qualification
QML Class V designation recognizes exceptional reliability and longevity for critical space missions

Microchip Releases 20 Advanced Wi-Fi® Products for Industrial and Commercial Applications
Company’s wireless connectivity portfolio represents one of the industry’s most extensive selection of Wi-Fi solutions and comprehensive support systems

New VelocityDRIVE™ Software Platform and Automotive-Qualified Multi-Gigabit Ethernet Switches for Software-Defined Vehicles

New Family of Voltage-Controlled Saw Oscillators With Ultra-Low Phase Noise Performance for Radar Applications
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Company of the week

Texas Instruments

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