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What does TCXO stand for in crystal oscillator?

As the name indicated a temperature compensated crystal oscillator provides a means of counteracting the frequency change caused by temperature change in a crystal oscillator. The letters TCXO stand for Temperature Compensated Xtal Oscillator – Xtal is short from crystal and implies a quartz crystal resonator.

How big of a package do I need for a TCXO?

As the crystal itself is sealed, this means that sealing of the overall TCXO package is not critical, or even required for most applications. Package sizes such as 5×3.2×1.5 mm or 5×3.5×1 mm are widely used for TCXOs and smaller packages available if required.

How often does a TCXO have to be calibrated?

Additionally TCXOs normally have an external adjustment to enable the frequency to be reset periodically. This enables the effects of the ageing of the crystal to be removed. The period between calibration adjustments will depend upon the accuracy required, but may typically be six months or a year.

What is the temperature range of a TCXOs?

With frequencies greater than 1.0GHz, stabilities as low as 0.05ppm, and temperature range up to -40°C to 85°C. With superior phase noise and low current consumption, our TCXOs enable customers to achieve the highest performance for innovative designs.

What do temperature compensated crystal oscillators do?

Temperature Compensated Crystal Oscillators (TCXO) are generally supplied for GPS, Wireless, Sonet, Fibre Channel, Wifi, Server, and Storage applications. These TCXO’s are continuously monitoring temperature, and will adjust the output frequency to maintain tight stabilities.

Where can I find TCXO and vctcxo datasheets?

TCXO and VCTCXO datasheets are available from the TCXO parametric search page. Within our parametric search table you have the option to view/filter our stock TCXOs/VCTCXOs. In order to view stock for specific part number you need create an account / sign in.

Why do you need voltage regulator for TCXO?

Voltage regulator: In order to prevent external voltage changes from introducing unwanted frequency shifts, the overall TCXO should incorporate a voltage regulator which itself should not introduce unwanted temperature effects. In addition to this, the output from the voltage regulator should be very low noise.