637E15556A2T

Frequency Stability:	±20ppm
Current - Supply (Disable) (Max):	--
Height - Seated (Max):	0.079" (2.00mm)
Size / Dimension:	0.276" L x 0.197" W (7.00mm x 5.00mm)
Package / Case:	6-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	88mA
Operating Temperature:	-10°C ~ 60°C
Series:	637
Voltage - Supply:	2.5V
Output:	LVPECL
Function:	Enable/Disable
Frequency:	167.3728MHz
Type:	XO (Standard)
Base Resonator:	Crystal
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

Oscillators are devices that convert one form of energy to another at a particular frequency. Oscillators are used in many electronic and communications applications, including radio, television, communication systems, radar, navigation systems and industrial control systems. 637E15556A2T is a type of oscillator that uses voltage-controlled crystal oscillator technology.

637E15556A2T Application Field

637E15556A2T is an integrated voltage-controlled crystal oscillator (VXO) that offers frequency stability of less than 2 ppm and temperature stability of less than 5 ppm. It has a low power consumption of less than 7 mA and has an operating frequency range from 100 kHz to 500 MHz. It can be used in digital and analog communications applications including radio, TV, mobile phones, satellite communication systems, navigation systems and industrial control systems.

Working Principle

A 637E15556A2T oscillator consists of a voltage-controlled crystal, a temperature-compensated oscillator (TCXO) and a voltage-controlled amplifier (VCA). The voltage-controlled crystal provides frequency stability by ensuring that the oscillation frequency remains constant regardless of temperature or power supply variations. This is achieved by utilizing a voltage-variable capacity (VVC) between the two capacitors in the crystal to modify the resonance frequency. The TCXO, on the other hand, ensures temperature stability by keeping the processing voltage constant over a wide temperature range. Finally, the VCA further ensures stability by controlling the voltage that is applied to the resonator. The working of the 637E15556A2T is based on the same principles used in a voltage-controlled oscillator (VCO). The oscillator generates a signal at a fixed frequency based on the voltage applied to the capacitors. This signal is amplified with the help of the VCA and is sent to the output. The output frequency is determined by the value of the capacitors and the voltage applied to them.

Conclusion

The 637E15556A2T is a voltage-controlled crystal oscillator that provides frequency stability and temperature stability. It has a low power consumption and can be used in many digital and analog communications applications. The working of the 637E15556A2T oscillator is based on the same principles used in a voltage-controlled oscillator and it generates a signal at a fixed frequency based on the voltage applied to the capacitors.

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