ASCO-25.000MHZ-LB-T3

Frequency Stability:	±40ppm
Current - Supply (Disable) (Max):	--
Height - Seated (Max):	0.028" (0.70mm)
Size / Dimension:	0.063" L x 0.047" W (1.60mm x 1.20mm)
Package / Case:	4-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	6mA
Operating Temperature:	-40°C ~ 85°C
Series:	ASCO
Voltage - Supply:	3.3V
Output:	CMOS
Function:	Enable/Disable
Frequency:	25MHz
Type:	XO (Standard)
Base Resonator:	Crystal
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Oscillators are electrical or electronic circuits used to generate electrical waves at a specific frequency. As the name suggests, oscillators oscillate between high and low elements continuously and provide a consistent output frequency. The oscillator is widely used in a variety of circuits, including radio transmitters, receivers and digital logic circuits.The ASCO-25.000MHZ-LB-T3 oscillator is a precision digital temperature compensated crystal oscillator (TCXO) that provides a stable and repeatable frequency output capable of meeting extremely tight frequency stability requirements of 0.2PPM over 0 to 70 °C operating.

Application Field

The ASCO-25.000MHZ-LB-T3 is designed to meet stringent frequencies for a variety of applications including:

• Wireless communication systems
• Test and measurement equipment
• GPS receivers
• Voice over internet protocol (VoIP)
• Automotive electronics
• Radar and navigation systems
• Radar antenna assemblies
• Broadcast communications systems
• Telecom networks

The ASCO-25.000MHZ-LB-T3 tolerance of ±0.2 PPM over 0 to 70 °C offers reliable performance over a wide temperature range, with excellent long-term stability and low phase noise. This makes it suitable for use in critical applications that require high performance and reliability.

Working Principle

The ASCO-25.000MHZ-LB-T3 is based on a crystal oscillator, an electronic circuit that uses a vibrating crystal to generate a signal with a precise frequency. At the heart of this oscillator is a small quartz crystal cut so it will vibrate at an extremely precise frequency when a voltage is applied. The oscillator also contains an amplifier and various other components that together capture the vibration and in turn, convert it into an oscillating electrical signal.The oscillator is then temperature-compensated to maintain a stable frequency even when exposed to temperature variations. Temperature compensation is achieved by using a temperature-sensitive component in the oscillator circuit (typically either a NTC thermistor or a PTC thermistor) to detect and adjust for temperature changes.The oscillator also contains a frequency-compensating capacitor that compensates for the frequency shift due to aging of the crystal over time. This helps to ensure that the oscillator remains stable even over a long period of use.

Conclusion

The ASCO-25.000MHZ-LB-T3 is a precision digital temperature-compensated crystal oscillator designed for use in a wide variety of applications. Its tolerance of ±0.2 PPM over 0 to 70°C make it suitable for use in critical applications that require high performance and reliability. It uses a crystal, an amplifier and various other components to convert a vibration into an oscillating electrical signal, and also contains temperature and frequency-compensating components for improved stability.

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