CMX309HBC3.6864MTR Crystals, Oscillators, Resonators

Frequency Stability:	±100ppm
Current - Supply (Disable) (Max):	15mA
Height - Seated (Max):	0.185" (4.70mm)
Size / Dimension:	0.547" L x 0.341" W (13.90mm x 8.65mm)
Package / Case:	4-SOJ, 5.08mm pitch
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	20mA
Operating Temperature:	-20°C ~ 70°C
Series:	CMX-309
Voltage - Supply:	3.3V
Output:	CMOS
Function:	Enable/Disable
Frequency:	3.6864MHz
Type:	XO (Standard)
Base Resonator:	Crystal
Part Status:	Obsolete
Packaging:	Cut Tape (CT)

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Background

Oscillators are electronic circuits used to generate a periodic, oscillating electronic signal. Oscillators convert a direct current (DC) electrical signal into an alternating current (AC) signal that runs in a continuous loop. This AC signal is commonly referred to as the output signal and will be used by other circuits or systems. This makes oscillators desirable components for multiple applications in electronics.Two main types of Oscillators are LC oscillators and digital oscillators.

CMX309HBC3.6864MTR Oscillator

The CMX309HBC3.6864MTR Oscillator is a digital Oscillator and it is specifically designed to generate an AC signal at a frequency of 3.6864 Megahertz (MHz). This device is composed of a 3.6864 MHz quartz crystal and an oscillator circuit that is responsible for generating the AC signal. The CMX309HBC3.6864MTR Oscillator is manufactured using CMOS technology and is encased in a small, 8-pin DIP package. It requires a single +3.3 Volt (V) power supply in order for it to work.

Application Fields

Oscillators are used in many electronic devices and systems where the generation of a precise frequency signal is required.The CMX309HBC3.6864MTR Oscillator was specifically designed for applications requiring a precise frequency signal operating in the 3.5 - 3.7 MHz frequency range .The output AC signal has low jitter and high stability over the temperature range. Applications for the CMX309HBC3.6864MTR oscillator include digital radio frequency (RF) applications like Wi-Fi, Bluetooth and GPS; digital television (DTV) systems; and network communications systems that are dependent on precise time and frequency synchronization.

Working Principle

With no outside input, a CMX309HBC3.6864MTR Oscillator will operate at its resonant frequency, governed by the physical laws of electromagnetism. In the CMX309HBC3.6864MTR oscillator, the frequency at which the device works is determined by a quartz crystal inside the package. The quartz crystal’s resonant frequency acts as the reference frequency. The oscillator uses this reference frequency to control the output AC signal’s frequency. When power is provided to the CMX309HBC3.6864MTR Oscillator, an energized DC electrical charge is forced through the quartz crystal. The quartz crystal vibrates when it is exposed to this charge, causing a small AC voltage to be generated. This AC voltage is then used to drive the oscillator circuit, which results in the generation of the output AC signal.

Conclusion

The CMX309HBC3.6864MTR Oscillator is a digital oscillator designed to generate a precise frequency signal in the 3.5 - 3.7 MHz range. It is manufactured using CMOS technology and is encased in a small, 8-pin DIP package. Its applications include digital RF systems, DTV systems and synchronous network communications systems. The working principle of the CMX309HBC3.6864MTR Oscillator is based on the vibration of a quartz crystal, exposed to an energized DC charge, resulting in the generation of an output AC signal.

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