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Oscillators

SG-615PCG 20.0000MM: ROHS application field and working principle

The SG-615PCG 20.0000MM: ROHS is a frequency adjustment oscillator, one of very important frequency adjustable devices for automotive, communications and industrial control areas. It is composed of temperature compensated crystal oscillator (TCXO), voltage control and capacitor array. It is controlled by input voltage or current, providing several output frequencies with a variety of stablizing methods. This article will discuss its application field and working principle.

Application Field

The SG-615PCG 20.0000MM: ROHS frequency adjustable oscillator is suitable for the industries need the high accuracy output frequency and small size. Furthermore, it has strong ability in resisting to outside interference, so it is widely applied to automotive, communications and industrial control industries.

• Automotive Industry: The SG-615PCG 20.0000MM: ROHS oscillator is used to provide accurate timing signals for the automatic control systems in the automobiles, such as the brake light system. The frequency adjustment control can be through the input voltage, providing the stable frequency output and strong anti-interference ability.
• Communications Industry: The SG-615PCG 20.0000MM: ROHS frequency adjustable oscillator is applicable in the digital mobile radio, wireless LAN and telecom equipments, providing the necessary frequency or timing signal for working and transmitting data.
• Industrial Control Industry: This oscillator can be used in the control system of industrial production, providing the time base for controlling various mechanical parts and electric equipments to work orderly and accurately.

Working Principle

The SG-615PCG 20.0000MM oscillator consists of a temperature compensated crystal oscillator and a voltage-, capacitance- or temperature-controlled circuit. This types of oscillator is composed of four parts: Temperature Compensated Crystal Oscillator (TCXO), Frequency Adjustment Capacitance Array, Phase Lock Loop (PLL) Control Circuit and Voltage Control Circuit. The TCXO is a an external crystal bound with the oscillator in an insulated way and connected with the drive unit, generating the fundamental frequency of the oscillator, determined by the external crystal. The frequency adjustment capacitance array creates a fine adjustment on the frequency, and also has the capacity to provide an even finer adjustment on frequency and output frequency range. Then, PLL control circuit or voltage control circuit is used to adjust the frequency which is output from the external crystal. The output frequency range is determined by the type of control circuit used.

In conclusion, the SG-615PCG 20.0000MM: ROHS is an oscillator with high accuracy, small size, strong anti-interference ability and wide application in automotive, communications and industrial control industries. Its output frequency range is adjustable through its control circuit, making it an ideal choice for frequency controlling in modern advanced electronics.

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