TD-66.667MBE-T

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TD-66.667MBE-T Application Field and Working Principle

TD-66.667MBE-T, which belongs to the oscillator family, is a temperature and vibration compensated quartz crystal oscillator designed to produce very accurate, low jitter PECL outputs. This product features a wide supply voltage range, and is a reliable device to use when designed into high frequency, high performance and low jitter applications.

Applications of TD-66.667MBE-T

High frequency TD-66.667MBE-T are commonly used for Ethernet, DDR SDRAM, fiber channel, serdes, storage, and other IEEE 1394b applications. TD-66.667 also commonly operates in FPGA/AFE/DSP clocked systems. The wide supply voltage range and renowned reliability and accuracy make this oscillator a go-to choice for military/aerospace applications, high performance telecom, instrumentation, radar, and communications systems.

Working Principle of TD-66.667MBE-T

The TD-66.667MBE-T oscillator functions based on the crystal resonator of an oscillator circuit or colpitts oscillator. This oscillator consists of the crystal, a capacitive divider network, cross-connecting capacitors C1 and C2, and a transistor with a continuous current source to provide the collector current. The frequency of oscillation is set by the resonance of the crystal and the capacitance of the capacitive divider network and the cross connecting capacitors.

When the TD-66.667MBE-T is in operation, the transistor is biased so that a constant current flows through the crystal that provides a high Q resonate frequency selected by the crystal. The capacitor across the resonator provides improved temperature and vibration stability. The frequency of the output is determined by the resonant frequency of the crystal. The overall frequency stability is the combination of the frequency stability of the oscillator circuit and the crystal and the stability of the temperature and vibration compensating components.

Conclusion

The TD-66.667MBE-T oscillator is a highly reliable device used for applications requiring very precise frequencies, low jitter, and superior temperature and vibration stability. The accurate frequency, improved temperature and vibration stability, and wide supply voltage range make this oscillator an excellent choice for a broad range of applications, from high performance telecom to military/aerospace systems.

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