550BF139M776DG

Oscillators: 550BF139M776DG Application Field and Working Principle

Oscillators are auto electronic circuits that can repetitively generate electrical signals with distinct frequency and waveform. They are used in wide range of applications as a time reference signal for communication, synchronization, timing, medical and other equipments. Oscillators with various operating principle and characteristic are made to meet various application requirements.

Application Field of 550BF139M776DG Oscillator

550BF139M776DG is an oscillator series from the widely used oscillator family, timing devices. They function as a main clock or UI clock of system, precise clock for signal processing, and a base clock for various control logic. 550BF139M776DG provides several different frequencies that can range from 1 MHz to 50 MHz, that s suitable for a wide range of applications. Examples of the frequency ranges for specific applications are:

• 1-6MHz for microprocessor clock, LCD controller clock and general control logic clock;
• 3-12MHz for USB, LAN, bus interfaces and other clock synthesizers;
• 20-50MHz for GPS, Bluetooth, and WLAN.

550BF139M776DG and other oscillators can also be used in industrial equipments, automotive electronic control units, exercise equipments, medical equipments, timers, calculators, digital cameras and many other applications.

Working Principle of 550BF139M776DG Oscillator

The principles of the 550BF139M776DG oscillator are based on the fundamental principles of oscillation, which refer to an electrical circuit having a regenerative gain and negative feed-back. The exact working principle for 550BF139M776DG oscillator is based on the inverted tabled feedback topology which commonly uses crystal oscillators.

A crystal oscillator has a resonator, such as a quartz crystal, connected to circuit and its frequency is determined by its physical size. 550BF139M776DG has a frequency accuracy of +/- 50ppm at 25 ℃ and extremely low temperature stability (maximum temperature drift is +/- 2.5ppm/ ℃). This small temperature change between 0 ℃ to 70 ℃ can be compensated by an appropriate choice of the crystal.

The crystal oscillator has two main components: the piezoelectric crystal material and the feedback circuit. The piezoelectric crystal is an electrical conductor that acquires an electrical charge when subject to mechanical stress. When the crystal is in a vibrating, steady-state the feedback circuit amplifies a charge that is applied to the crystal. This produces an oscillation that can be used for signal processing, timing, or synchronization.

The crystal is connected to an oscillator circuit, which amplifies the output so that an electrical oscillation of a specific frequency can be generated. The frequency of the generated oscillation is determined by the resonant circuit\'s design and depends on numerous electrical and physical characteristics of the crystal.

The Pierce oscillator topology is the most widely used circuit configuration in 550BF139M776DG. In the Pierce oscillator topology, the crystal is the frequency determining element in series feedback configuration. This oscillator provides a stable output frequency at high quality due to its extremely low output phase noise level and low power consumption. It also features low target jitter and harmonic distortion, as well as excellent static phase noise and high frequency precision.

In conclusion, the 550BF139M776DG oscillator is a must-have component for many applications like microprocessor clock, LCD controller clock, USB, LAN, bus interfaces, and many others. By taking advantage of the properties of a crystal oscillator, the output frequency of 550BF139M776DG can be precisely configured and controlled, providing long-term stability and reliability for its applications.