EG-2102CA 250.0000M-LHPAB Crystals, Oscillators, Resonators

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Oscillators: EG-2102CA 250.0000M-LHPAB application field and working principle

An oscillator is an electronic component or sub-system that produces a periodic, oscillating electronic signal. Oscillators differ from each other in the type of electronic signal produced, in frequency range, power and other characteristics, and in the method used to control the oscillation form. The EG-2102CA 250.0000M-LHPAB is a temperature compensated crystal oscillator (TCXO). This type of oscillator is specifically designed to maintain a stable frequency regardless of the oscillator’s environment. It is typically used in applications where frequency stability, precise phase and timing are required such as telecommunications, medical instrumentation, radar, basic scientific research, and satellite and other navigation systems.

Working Principle

The EG-2102CA 250.0000M-LHPAB has a quartz crystal that functions as an electrical filter and produces a high quality signal with good temperature stability. The quartz crystal is made up of a piezoelectric material that vibrates with a certain frequency when the correct voltage is applied to it. This frequency is determined by the size and shape of the quartz crystal. The resonance frequency is determined by the thickness, height and diameter of the quartz crystal. In order for the oscillator to work, a circuit must be designed that operates under the parameters of the particular quartz crystal used.

The circuit typically consists of an amplifier, an inverter and a feedback network. The amplifier, commonly made using a bipolar transistor, takes the input signal and amplifies it. The inverter is built using an integrated circuit and its job is to reverse the output of the amplifier. This provides a period of time when the amplifier is on and off. The feedback network presents the output of the inverter back to the input of the amplifier. The feedback network determines the frequency of the oscillator by controlling the on and off times of the amplifier and the inverter. The overall frequency of the oscillator is determined by the value of the components within the feedback network, such as capacitors and resistors, as well as the quartz crystal.

The EG-2102CA 250.0000M-LHPAB also has additional circuitry that provides extra frequency stability and better control. A temperature compensation circuit is incorporated which monitors the oscillator’s environment. If the oscillator’s environment changes, the voltage to the quartz crystal is adjusted accordingly so that the frequency remains as close to the nominal value as possible. This ensures that the quartz crystal is operating at its resonance frequency. Additionally, a voltage regulator circuit is included to ensure that the oscillator is supplied with a stable input voltage. This prevents variations in the operation of the oscillator due to variations in the power supply.

Features

The EG-2102CA 250.0000M-LHPAB offers excellent frequency stability due to its temperature compensation circuitry and voltage regulation circuit. The output frequency can be adjusted remotely for added flexibility. It has a low voltage operation that can be powered from single +3.3Vdc or +5Vdc supply. The device eliminates the need for an external reference clock, which saves space, power and cost. It supports a wide range of operating temperatures from -20°C to +70°C. It has low jitter and adjusts itself for an optimum frequency.

Applications

The EG-2102CA 250.0000M-LHPAB is used in a wide range of applications, including mobile phones, satellite navigation systems, radios, medical instrumentation, and military communications. It is well-suited for use in multiple-carrier systems and Wi-Fi systems due to its ability to operate with a wide range of frequencies. Its low power consumption and small form factor make it ideal for use in portable electronics. It is used in microprocessors and DSPs for the high precision timing required in these applications.

The EG-2102CA 250.0000M-LHPAB has proven to be an ideal choice for applications that require stable frequency, precise phase and timing. Its temperature compensation capabilities along with its temperature range and low power consumption make it a perfect solution for applications that need reliable frequency accuracy and stability.

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