402F200XXCDT

Series:	402
Packaging:	Tape & Reel (TR)
Part Status:	Discontinued at Digi-Key
Type:	MHz Crystal
Frequency:	20MHz
Frequency Stability:	±15ppm
Frequency Tolerance:	±15ppm
Load Capacitance:	18pF
ESR (Equivalent Series Resistance):	100 Ohms
Operating Mode:	Fundamental
Operating Temperature:	-20°C ~ 70°C
Ratings:	--
Mounting Type:	Surface Mount
Package / Case:	4-SMD, No Lead
Size / Dimension:	0.079" L x 0.063" W (2.00mm x 1.60mm)
Height - Seated (Max):	0.022" (0.55mm)

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Crystals

402F200XXCDT Application Field and Working Principle

The 402F200XXCDT is a popular choice of crystal oscillator used by engineers, technicians and academics in a wide range of applications. As a frequency controlled device, it is used in the design of circuits that require precise frequency control and stability. This oscillator utilizes oscillation characteristics between two titanium-sapphire crystals, electrodes and discrete components in order to perform the desired oscillation and timing.The 402F200XXCDT is specifically designed for use in radio transmitters, radio receivers, WANs, LANs and other various communication systems and information processing systems. By using a pair of quartz crystals connected in what is known as a “piezoelectric” configuration, the 402F200XXCDT produces a particular frequency, which remains stable and accurate over extended periods of time and is able to operate within a wide temperature range.This is achieved through the mechanical properties of quartz. Quartz crystals act as a converter of electrical energy into mechanical and vice versa. When an electrical current is applied to an alternating current, it causes the quartz crystal to vibrate, generating an output frequency frequency closely related to the applied current. This output frequency is known as the crystal oscillation frequency. The 402F200XXCDT utilizes an integrated oscillator circuit to generate and control the frequency of the quartz crystal oscillator.The 402F200XXCDT oscillator is composed of two quartz crystals, driven by electrodes and other discrete components. The two quartz crystals act as inductor and capacitor a complex resonance occurs, setting the oscillation frequency. The oscillation frequency is then regulated using a positive feedback circuit. The two quartz crystals are connected in a way which allows the oscillator to correctly regulate the frequency output, through a comparison of the input signal and to the expected output.The 402F200XXCDT has a wide range of application fields and its main feature is the ability to maintain frequency accuracy and stability over time. Because of this, it is used in the development of radio systems, in WAN and LAN networks, in telecommunication systems and, more recently, in devices such as mobile phones and embedded systems requiring precise, stable and repeatable operation.For radio transmission purposes, the 402F200XXCDT provides precise and repeatable frequencies for both digital and analogue transmission. The device helps to ensure that the amplitude and frequency response of digital transmission remain consistent over extended periods of time.Additionally, the 402F200XXCDT is also used in devices that require precise timing. For example, digital watches, quad copters and clocks all use quartz crystal oscillators for precise timing and accuracy.By providing accurate and stable frequency and timing, the402F200XXCDT is highly reliable and effective device. By utilizing the piezoelectric properties of quartz and a feedback regulating system, the 402F200XXCDT is able to provide a precise and reliable frequency and timing in a wide range of applications.

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