TA-68.000MDD-T

Frequency Stability:	±25ppm
Current - Supply (Disable) (Max):	--
Height - Seated (Max):	0.039" (1.00mm)
Size / Dimension:	0.276" L x 0.197" W (7.00mm x 5.00mm)
Package / Case:	4-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	--
Operating Temperature:	-40°C ~ 85°C
Series:	TA
Voltage - Supply:	1.8V
Output:	CMOS
Function:	Enable/Disable
Frequency:	68MHz
Type:	XO (Standard)
Base Resonator:	MEMS
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Oscillators

Oscillators plays a key role in a wide variety of applications, such as signal generation, frequency synthesis, and data transmission. Oscillators are typically used as circuit components to generate periodic or near-periodic signals. The TA-68.000MDD-T oscillator is an example of an oscillator intended for medium precision applications and is designed to provide low phase noise and jitter performance in both laboratory test and system clock applications.

TA-68.000MDD-T Application Field

The TA-68.000MDD-T oscillator is a clock oscillator with adjustable frequency capability, designed for applications where a frequency below 10MHz is required. It has a wide frequency range of 4kHz to 64MHz and offers good stability with temperature drift of only 7ppm over temperature. It is also capable of operating over a wide temperature range, ranging from -20°C to 75°C. The signal generation from this oscillator can generate clock signals of very low phase noise, making it suitable for applications demanding improved signal integrity.This oscillator is also suitable for applications such as medical electronics, aerospace, security equipment, and automotive electronics. In addition, it is suitable for use in laboratory test equipment, such as signal generators, frequency counters, and phase noise spectrum analyzers. This oscillator can also be used in various hardware prototypes, such as data acquisition, lab exercise components, and precision frequency references.

TA-68.000MDD-T Working Principle

The TA-68.000MDD-T oscillator is based on the Pierce oscillator circuit topology, which is a prominent circuit configuration used in the design of timing devices and frequency control circuits. It operates by introducing an initial frequency into a tank circuit consisting of an inductance and capacitance which is then amplified. The resulting amplified signal is then fed back into the tank circuit, generating an oscillation.Since the frequency of the oscillator is determined by the values of the inductor and capacitor, changing these values can allow the oscillator to run at different frequencies. In the TA-68.000MDD-T oscillator, this is achieved by using a pair of fine-tunable trimmer capacitors to adjust the frequency of the oscillator. This enables the crystal oscillator’s output frequency to be configured accurately and reliably.Finally, the oscillator is integrated with a voltage controlled oscillator (VCO) for phase-locked loop applications. The VCO includes an operational amplifier and variable capacitor to accurately control the output frequency. The resulting VCO allows for precise control of the crystal oscillator\'s output frequency and superior jitter performance in applications that require increased system performance.

Conclusion

The TA-68.000MDD-T oscillator is designed to provide excellent frequency stability and low jitter performance in a wide range of applications. Its Pierce oscillator topology is well-suited for generating low phase noise with an adjustable frequency capability. Additionally, the integrated VCO provides an improved way to fine tune the frequency and improve the oscillator’s signal integrity. This makes it an ideal choice for medium precision applications.

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