637E156E5C3T Allicdata Electronics
Allicdata Part #:

637E156E5C3T-ND

Manufacturer Part#:

637E156E5C3T

Price: $ 2.30
Product Category:

Crystals, Oscillators, Resonators

Manufacturer: CTS-Frequency Controls
Short Description: OSC XO 84.7739MHZ LVPECL SMD
More Detail: 84.7739MHz XO (Standard) LVPECL Oscillator 3.3V En...
DataSheet: 637E156E5C3T datasheet637E156E5C3T Datasheet/PDF
Quantity: 1000
1000 +: $ 2.07012
Stock 1000Can Ship Immediately
$ 2.3
Specifications
Series: 637
Packaging: Tape & Reel (TR) 
Part Status: Active
Base Resonator: Crystal
Type: XO (Standard)
Frequency: 84.7739MHz
Function: Enable/Disable
Output: LVPECL
Voltage - Supply: 3.3V
Frequency Stability: ±25ppm
Operating Temperature: -20°C ~ 70°C
Current - Supply (Max): 88mA
Ratings: --
Mounting Type: Surface Mount
Package / Case: 6-SMD, No Lead
Size / Dimension: 0.276" L x 0.197" W (7.00mm x 5.00mm)
Height - Seated (Max): 0.079" (2.00mm)
Current - Supply (Disable) (Max): --
Description

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Oscillators: 637E156E5C3T Application Field and Working Principle

Oscillators are vital components in the production of electronics to provide an ever-changing signal. Without them, circuits could not perform even the simplest of tasks, such as switching on or off a light, or turning on a radio. Oscillators come in many different forms, such as digital, analog, and radio frequency. The 637E156E5C3T is an oscillator manufactured for radio frequency, or RF, applications. The 637E156E5C3T, when powered by an external 3 to 5V supply, produces a signal at frequencies ranging from 70MHz to 600MHz. It operates in the form of an astable multivibrator, with complementary outputs that will provide frequencies from 35MHz to 300MHz, depending on the load capacitance applied to the device. This oscillator comes in a 8-pin plastic dual-in-line package and can provide a maximum output power of +13dBm. The 637E156E5C3T is ideal for use in such applications as automotive radios, Wi-Fi, Bluetooth, and other RF applications in automobiles and consumer electronics.The 637E156E5C3T is composed of various components, the main component being a pair of transistors for oscillation. The device also contains resistors, capacitors, and inductors which are used to tune for the desired output frequency from the device. Additionally, the 637E156E5C3T contains a “spread spectrum technique” that is used for reducing conducted and radiated interference. This technique is enabled by a pin on the package, allowing it to work with applications that require reduced interference.To understand how the 637E156E5C3T works, we must first look at the basics of oscillation. Oscillation is the process by which an output signal is a rapidly repeating waveform of a certain frequency. In the case of the 637E156E5C3T oscillator, the output frequency of the device is determined by the resistor, capacitor, and inductor components within the oscillator’s ballasting network. These components act as frequency-determining elements, or resonators, that provide the device with the frequency range in which it operates.The oscillator itself is composed of a pair of transistors, generally bipolar transistors, that are arranged in a manner that allows them to switch state rapidly between the two stable states. This switching is the basis of oscillation, and is enabled in this device by a bias voltage applied to the base electrodes of the transistors through a pair of resistors. With this bias voltage applied, the transistors will switch state rapidly, creating an alternating output signal. This output signal will continue to oscillate at its given frequency until the transistors are driven out of saturation, or until the input voltage is changed.The 637E156E5C3T is a high-performance oscillator that is designed to produce a reliable signal at a range of frequencies. It is designed for radio frequency applications, where reducing conducted and radiated noise is of the utmost importance. The device uses a pair of transistors in a rapid switching configuration to generate an output signal, and is tuned with the various components in its ballasting network to provide a wide range of frequencies between 70MHz and 600MHz. This device is a popular choice among wireless communication and automotive applications due to its low power consumption and wide frequency range.

The specific data is subject to PDF, and the above content is for reference

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