Suntsu Frequency Control

Frequency Control Crystals

Suntsu Quartz Crystals are available in through-hole or surface-mount packaging with many sizes to choose from. Pick out a standard part number from the data sheets below or contact our sales team to request any custom parameters that you desire and we will design to your specific needs.

Quartz crystals have piezoelectric properties; they develop an electric potential upon the application of mechanical stress. They are the most common type of piezoelectric resonator used today.

Crystal Oscillators

Suntsu Crystal Oscillators are available in through-hole or surface-mount packaging with many sizes to choose from. We offer a wide frequency range and many different voltages and logic options. Pick out a standard part number from the data sheets listed below or contact our sales team to request any custom parameters that you desire and we will design to your specific needs.

A Crystal Oscillator is an electronic circuit that uses the mechanical resonance of a vibrating crystal of piezoelectric material to create an electrical signal with a very precise frequency. This frequency is commonly used to keep track of time, to provide a stable clock signal for digital integrated circuits, and to stabilize frequencies for radio transmitters and receivers.

VCXO

Suntsu VCXO’s are available in through-hole or surface-mount packaging. We offer a wide frequency range and many different voltages and logic options. Pick out a standard part number from the data sheets listed below or contact our sales team to request any custom parameters that you desire and we will design to your specific needs.

Voltage-Controlled Crystal Oscillators are used when the frequency of operation needs to be adjusted. The frequency of a voltage-controlled crystal oscillator can be varied typically by a hundred parts per million (ppm), because the high Q factor of the crystals allows “pulling” over a range of frequencies.

Reasons for using a VCXO are to adjust the output frequency to match (or perhaps be some exact multiple of) an accurate external reference or where the oscillator drives equipment that may generate radio-frequency interference (adding a varying voltage to its control input can disperse the interference spectrum to make it less objectionable).

TCXO

Suntsu TCXO’s and VCTCXO’s are available in through-hole or surface-mount packaging with many sizes to choose from. We offer many different voltages and can provide parts with Stratum 3 compliancy. Pick out a standard part number from the data sheets listed below or contact our sales team to request any custom parameters that you may require and we will design to your specific needs.

Temperature-Compensated Crystal Oscillators use sampling techniques to correct the temperature deficiencies of a crystal oscillator circuit, its package and its environment. Typically the correction techniques involve the physical and electrical characterization of the motional inductance and terminal capacitance of the crystal blank. The knowledge of which is used to create a correction polynomial, or algorithm, which in turn is implemented in circuit blocks and maintains better stabilities than standard oscillators.

OCXO

OCXO’s are available in through-hole packaging with many sizes to choose from. We offer many different voltage and logic options and can provide parts with ±800ppt stability. Pick out a standard part number from the data sheets listed below or contact our sales team to request any custom parameters that you desire and we will design to your specific needs.

Oven-Controlled Crystal Oscillators use temperature-controlled chambers to keep the quartz crystal inside the oscillator at a constant temperature in order to prevent changes in the frequency due to variations in the external temperature. OCXO’s are typically used to control the frequency of radio transmitters, cellular base stations, military communications equipment, and in measurement applications where the highest frequency stability possible from crystals is needed.

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