Abracon | Abracon ClearClock® Third Overtone XOs: Ultra-low jitter,…


Abracon's new AK2, AX3, AK5, AK7, AK2A, and AK3A ClearClock® XO series are designed to meet the needs of compact applications such as optical modules, active cables, and small networking and storage gear while maintaining the world’s highest data rates in excess of 10Gbps and up to 100/400Gbps.

This next generation of ClearClock® is ideal for applications requiring carrier frequencies in the 100MHz to 200MHz range. Most network processors and advanced CPUs require ultra-low jitter for connectivity greater than 10 gigabits per second and up to 100Gbps. The AK2, AX3, AK5, AK7, AK2A, and AK3A devices utilize a quieter third overtone architecture that avoids phase-locked loop (PLL) based multiplication, reducing overall power consumption far below other high-performance XO alternatives.

The third overtone ClearClock® solutions provide the best combination of ultra-low sub-100fs jitter performance in a miniature footprint. Typically consuming 30mW of power at the lowest operating voltage of 1.8V, the third-overtone ClearClock® devices deliver industry-leading low power consumption for low noise differential oscillators.

Learn more about Abracon's NEW AK2A & AK3A ClearClock® Products


<80fs Typ. (150fs Max @ 156.25MHz)

Available in industry standard frequencies: 100MHz to 212.5MHz

Lowest in-class Power Consumption 16mA Typ. LVDS @ 156.25MHz

±25ppm stability: Over industrial operating temperature (-40 to +85ºC)

3.3V, 2.5V, 1.8V supply voltage options

Supports LVPECL, LVDS, HCSL differential outputs

Industry Standard Miniature Footprints


PCI Express

10G/40G/100G optical Ethernet

Networking and Communications

Optical Modules

RF Systems

BTS / Base stations

Test and Measurement

Data Center

Ultra-Low Jitter For the World's Highest Data Rates

AX3 ClearClock XO Jitter Plot Graph


Series Name Jitter Package Size Abracon In-Stock
AK2 <120fs typ. RMS 2.5 x 2.0 x 1.0 mm Check Inventory
AX3 <80fs typ. RMS 3.2 x 2.5 x 1.0 mm Check Inventory
AK5 70fs typ. RMS 5.0 x 3.2 x 1.3 mm Check Inventory
AK7 75fs typ. RMS 7.0 x 5.0 x 1.8 mm Check Inventory
AK2A 83fs typ. RMS 2.5 x 2.0 x 1.0 mm Check Inventory
AK3A 83fs typ. RMS 3.2 x 2.5 x 1.0 mm Check Inventory

Contact your local abracon representative for additional information.


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