515CDB58M8375AAG

Oscillators are broadly used for frequency control in electronic systems. Among various types of oscillators, 515CDB58M8375AAG is an integrated circuit which is designed to serve as a precision oscillator primarily used as a basis for remote control receiver systems. This oscillator is widely used in different applications to achieve wide range of frequency output of 0.005 Hz to over 20 MHz. It is able to deliver both square wave and saw tooth signals with an adjustable duty cycle. This article focuses on the application field and working principle of 515CDB58M8375AAG oscillator.

Application of 515CDB58M8375AAG Oscillator

The 515CDB58M8375AAG oscillator is a PLL (phase lock loop) system, denoting that phase synchronization between the input signal and output is maintained to enable maximum stability. It is primarily used in radio control, receivers, navigation systems, and tracking systems, among a range of other applications. It can also be used to achieve frequency conversion to modulate, demodulate, and serve as a digital transmitter. Due to its high-level stability, even if there is a drastic variation in temperature or supply voltage, the frequency output is able to remain stable. This frequency stability is also applicable when the levels of hysteresis or phase noise are low. This makes this integrated circuit an attractive option not only in avionics, but in a wide range of applications in automotive systems, telecom devices, and computer systems.

Working Principle

The 515CDB58M8375AAG oscillator is a ECL based PLL system, and consists of a series of both combinational and sequential logic circuits. As an example, in order to achieve a PLL controlled 6MHz crystal oscillator output, the input is first converted to 8KHz via a 4KHz pre-scalar. This 8KHz frequency is then subjected to the PLL program/processing cycle through a variable frequency divider and a 0.5% programmable voltage-controlled oscillator. Lastly, the output generated from the VCO is subjected to the reference frequency input from the 4KHz pre-scaler for phase comparison. This reference frequency is further compared to the output frequency of the VCO in order to accurately control the output frequency of the oscillator.

Limitations of 515CDB58M8375AAG Oscillator

Although the 515CDB58M8375AAG oscillator has a wide range of application capabilities and is known for its frequency stability, it has certain limitations which need to be noted before using this unit. The oscillator’s duty cycle can be varied between 0.1% and 99.9%, however it is limited to only 15KHz when the duty cycle is adjusted below 50%. The reference frequency can also be limited to a maximum of 4KHz, which may create a challenge for a wide range of applications which require higher-frequency outputs.

Conclusion

The 515CDB58M8375AAG oscillator is a versatile integrated circuit, designed to meet the requirements of many different applications. With its ability to remain stable and maintain phase synchronization even in elevated temperature and varying supply voltages, this unit has a wide range of use in radio control, receivers, navigation and tracking systems, as well as a variety of automotive and computer systems. There are certain limitations which need to be kept in mind while using this oscillator, however overall it remains a popular choice for a vast majority of applications.