Miniature Temperature-Compensated Crystal Oscillator (TCXO)
ARGO Technology is offering the miniature temperature compensation controller (TCXO) developed and produced by EPSON using QMEMS technology. The size is only 2.0 x 1.6 x 0.73 mm with high precision of 0.5 PPM and low voltage of 1.8 V, which is suitable for high stability and tiny space applications such as cellular phone or GPS related products.
The full name of TCXO is Temperature-Compensated Crystal Oscillator. Generally, crystal oscillators are more sensitive to temperature changes, and the temperature changes affect the output frequency of crystal oscillators. TCXO has a temperature compensation circuit built-in, which can offset the frequency changes and control the changes within 2PPM (0.0002%) or 0.5PPM.
Package size : 2.0 x 1.6 x 0.73 (mm)
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In order to respond to the miniaturization design trend of upcoming products, EPSON uses QMEMS technology to develop TCXO. QMEMS is a coinage of "QUARTZ" and "MEMS" combined. Using photolithography with quartz materials, it integrates various functions related to machinery, electronics, optics, chemistry, and others in order to produce crystal components that have benefits of high precision, high stability, high frequency, and low power consumption. TCXO can greatly reduce the size of electronic components without sacrifice their electrical characteristics, and the tolerance can reach an accuracy of ±0.5 PPM range. Thus, it is very suitable for products that concern space and accuracy such as GPS applications.
The new oscillator not only has minimal deviation, but also has a high stability due to the use of internal wire bonding and Epson's original New Platform Oscillator (NPO) structure. In the NPO structure, the quartz crystal unit embedded in the ceramic package is encapsulated in an epoxy resin case together with the oscillator circuit. This NPO design can effectively suppress the deviation created from temperature changes and stabilize the output frequency.