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AX3, AX5 and AX7 ClearClock™

CLEARCLOCK™ Crystal Oscillators

Power-Optimized Jitter Performance for the Fastest Data Links

The ClearClock™ family of oscillators supports the next generation of bandwidth requirements for communications, cloud computing, storage, and RF applications. These oscillators lead the industry in low power consumption while maintaining typical jitter as low as 80fs. They deliver phase noise performance that FPGAs and ICs require for serial data rates beyond 56Gbps. The ClearClock™ family includes phase locked loop and third overtone solutions offered in compact package sizes as small as 3.2 x 2.5 mm.

PLL-Based ClearClock Solutions

The AX7 series is optimized for superior rms jitter performance (119 typ), while consuming 130mW. The AX7 features the widest factory configurable frequency range from 50MHz to 2.1GHz in its performance class.

The AX5 series is available in a smaller 5 x 3.2 mm footprint for next generation networking and RF applications. This series leads the industry in low power consumption while maintaining typical jitter of 125fs, ideal for clocking serial data links beyond 56Gbps.

Third Overtone ClearClock Solutions

Typically consuming 30mW of power at the lowest operating voltage of 1.8V, the new AX3 ClearClock™ series delivers industry-leading low power consumption for a low noise differential XO. The AX3's simplified architecture avoids phase locked loop (PLL) based multiplication, reducing overall power consumption far below other high performance XO alternatives.

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Ultra Low Jitter For Your High Speed Serial Data Link

Product Information



  • RF Systems
  • High Speed SERDES up to 56Gbps
  • High Performance Computing (HPC)
  • Network Processors
  • PCI Express
  • BTS / Basestations
  • Optical Modules
  • Test and Measurement
  • FPGA / Processors
  • 100/400Gb Ethernet
  • Server, Storage, Fibre Channel
  • Networking and Communications
  • Backplane/Chip to Chip Buses


119fs Jitter Typical (F=322.265625MHz)

150fs Jitter MAX (F>200MHz)

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

Widest in-class Frequency Range Offering from 50MHz to 2.1GHz

Lowest in-class Power Consumption

Supports LVPECL, LVDS, HCSL, CML Output Logic Type

Industry Standard Miniature Footprint


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