VCXO

VCXOs

Precise Voltage Controlled Frequency Adjustment

VCXOs

Precise Voltage Controlled Frequency Adjustment

A voltage-controlled crystal oscillator (VCXO) allows the output frequency to be fine-tuned by varying the control voltage. VCXOs are normally used with a phase-locked loop (PLL), and frequency adjustment is possible down to the parts-per-million (ppm) level.

IQD offers VCXO models with a range of pulling options, also known as VCXO tuning ranges. Output options include CMOS, HCMOS, sinewave, LVDS, LVPECL and differential sinewave.

Selected IQD VCXOs are available with tight stability, low phase noise and low jitter. Customisable designs can also be considered for specific applications.

For information of specifying a VCXO for your design click here: App Note | Specifying VCXO 

Typical Applications for VCXO

VCXOs are used in telecommunications, test equipment and broadcast equipment.

How to buy quartz VCXO

Call IQD to request a quote or place an order, our team supports customers worldwide with enquiries about IQD frequency products, including quartz crystals and oscillators.  Alternatively, you can purchase through authorized distribution partners. Contact Us 

 

IQD VCXO Category thumbnail

Key Features of VCXOs

  • Frequency: achievable up to 2.2GHz
  • Low jitter: down to 0.3ps
  • Pulling from ±25ppm up till ±150pp

VCXO Pulling

VCXO Pulling can be specified in one of two ways:

  • Minimum Pulling: This defines the frequency change which will be seen when varying the control voltage input. The range is with reference to the nominal frequency, i.e. the frequency at the midpoint of the pulling range.
  • Absolute Pulling Range (APR): This definition takes into account the frequency tolerance and stability and gives the remaining pulling. This specifies the pulling from the nominal frequency which is guaranteed to be met across the full operating temperature range. For example, if a VCXO will change by ±50 ppm over temperature and has a pulling range of >±200 ppm, therefore the minimum pulling is ±200 ppm, however, the APR would be ±150 ppm.

Read more about Specifying VCXO and Pulling here

Additional Available Features

Telecommunication, test and broadcast equipment, wireless infrastructures, digital audio and video processing, phase-locked loops [PLL], and industrial process controls, optical networking: SONET/SDH.

Featured Products and Applications

IQXV-114 – Package Size: 7050, In Timestamp for CCTV and Hi-temperature and Radiation-tolerant camera systems

 

Learn more about other frequency products from IQD...

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Contact Us

For more information about any of our parts or for help with your design-in, you can contact our Sales Team, Application Support or Engineering on +44 (0) 1460 270200, or click Contact Us below to submit your enquiry. 

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