Series:	ASTMHT
Packaging:	Strip
Part Status:	Active
Base Resonator:	MEMS
Type:	XO (Standard)
Frequency:	66.666MHz
Function:	Enable/Disable
Output:	LVCMOS
Voltage - Supply:	2.25 V ~ 3.63 V
Frequency Stability:	±25ppm
Operating Temperature:	-55°C ~ 125°C
Current - Supply (Max):	--
Ratings:	--
Mounting Type:	Surface Mount
Package / Case:	4-SMD, No Lead
Size / Dimension:	0.098" L x 0.079" W (2.50mm x 2.00mm)
Height - Seated (Max):	0.032" (0.80mm)
Current - Supply (Disable) (Max):	--

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Oscillators: ASTMHTD-66.666MHZ-ZR-E application field and working principle

Oscillators are electronic circuits that generate a periodic and continuous signal. The ASTMHTD-66.666MHZ-ZR-E is an oscillator module that uses a crystal to generate a signal with a frequency of 66.666MHz. Thissignal is suitable for a wide range of applications, such as radio receivers and transmitters, video monitors, test and measurement instruments, and so on. The ASTMHTD-66.666 MHZ-ZR-E oscillator module consists of an oscillator chip, a quartz crystal, a bias resistor, and capacitors to stabilise the circuit. The oscillator chip integrated circuit (IC) is the most important component of the oscillator. It contains the circuits needed to drive the crystal to generate the required frequency. The main working principle of the oscillator module is to provide an alternating voltage signal, which is created by the oscillator chip. The oscillator chip takes the square waveform from the Quartz crystal and gives it an oscillating effect. This is done by feeding it back to the crystal at a higher frequency. To secure the stability of the output signal, a resistor and capacitors are used to reduce the amplitude of the output signal. The ASTMHTD-66.666MHZ-ZR-E oscillator module is a stable clock point source with high accuracy. This oscillator module is ideal for synchronisation and timing applications due to its low power consumption and low phase noise levels. Moreover, the frequency stability is extremely high, with frequency deviation of less than 5ppm (-40°C to +85°C). The frequency stability achieved is due to the combination of the quartz crystal and the oscillator chip. The crystal is the main element that determines the frequency of the signal. A quartz crystal’s resonance frequency is determined by the mass of the quartz material, as well as the physical mass and dimensions of its cut. The oscillator chip provides the feedback to the crystal in order to achieve a stable frequency.To sum up, the ASTMHTD-66.666 MHZ-ZR-E oscillator module is an excellent source of a stable signal source with high accuracy. It has low phase noise levels and delivers a frequency stability of less than 5ppm (-40°C to +85°C). This oscillator module is ideal for applications in radio receivers and transmitters, video monitors, test and measurement instruments, and other such field that requires a stable and accurate frequency output.

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