416F37422CST

Series:	416
Packaging:	Tape & Reel (TR)
Part Status:	Discontinued at Digi-Key
Type:	MHz Crystal
Frequency:	37.4MHz
Frequency Stability:	±20ppm
Frequency Tolerance:	±20ppm
Load Capacitance:	Series
ESR (Equivalent Series Resistance):	200 Ohms
Operating Mode:	Fundamental
Operating Temperature:	-20°C ~ 70°C
Ratings:	--
Mounting Type:	Surface Mount
Package / Case:	4-SMD, No Lead
Size / Dimension:	0.063" L x 0.047" W (1.60mm x 1.20mm)
Height - Seated (Max):	0.018" (0.45mm)

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Introduction

Crystals play an important role in numerous applications across multiple industries. In the field of time and frequency measurements, crystals have been widely used in many applications, from realizing precise time-keeping and measuring frequency in precision instruments to providing reliable time references for communications. Among the widely used crystal oscillators, the 416F37422CST is widely employed due to its superior performance and enhanced reliability. This article will explore the features and applications of the 416F37422CST and discuss the working principle behind the frequency-stabilizing device.

Overview of the 416F37422CST

The 416F37422CST is a frequency-stabilizing device designed to ensure high precision frequency signals. It is powered by a 16 MHz crystal oscillator, a voltage-control oscillator, and a frequency divider. The 416F37422CST also features an on-board temperature compensation circuit that maintains the frequency accuracy of the device within a specified range against temperature changes. The device also has a low-phase noise output, allowing for a larger adjacent channel rejection ratio (ACRR) even with a low output power of 20 dBm. Moreover, the 416F37422CST is based on HFCS (High Frequency Crystal System) technology which enables the device to offer a frequency accuracy of ±3 ppm over an operating temperature range of -20°C to 70°C.

Applications and Benefits of the 416F37422CST

The 416F37422CST is widely used in cellular communication systems, satellite navigation systems, microwave networks, and military and industrial applications due to its low noise output, large ACRR, and frequency accuracy.Time and frequency measurements utilizing 400MHz oscillators are generally more accurate than those using frequency-stabilizing devices operating lower frequencies. Consequently, the 416F37422CST is particularly well suited for times and frequency measurements, enabling highly precise readings. Additionally, as the frequency-stabilizing device uses an on-board temperature compensation circuit, there is no need to install additional temperature compensators which results in shorter installation period and consequently reduced costs, making it an economical choice.

Working Principle of the 416F37422CST

The working principle of the 416F37422CST is based on the principle of phase-locked loop (PLL). The device consists of a 400MHz oscillator, a voltage-controlled oscillator (VCO), and a frequency divider. The crystal oscillator generates a reference signal that is amplified through the VCO amplifier and fed into the frequency divider circuit. The frequency of the output from the frequency divider is compared against the reference frequency which allow the oscillator to be adjusted according to the feedback signal. This process enables the oscillator to maintain the desired stability and temperature compensation and ensure the frequency accuracy of the 416F37422CST.

Conclusion

The 416F37422CST is an efficient frequency-stabilizing device designed to ensure precise time and frequency measurements and reliable performance even in varying temperatures. It is widely used in communications, military, industrial, and navigation applications and provides significant benefits such as low noise output, large ACRR, and economical installation. The working principle of the 416F37422CST is based on the principle of PLL which enables the device to maintain the desired stability and frequency accuracy.

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