PL580-39QI

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PL580-39QI is a monolithic clock generator/frequency synthesizer integrated circuit specifically designed to synthesize high precision crystal level frequencies and serve as a frequency generator. It is an integrated clock source device designed to provide frequency stability in a variety of applications, such as clocks for personal computers, embedded systems, and communication equipment.

The PL580-39QI clock generator/ frequency synthesizer is implemented using advanced circuit techniques, which guarantee its frequency stability over a wide operating range. The PL580-39QI incorporates a phase locked loop (PLL) frequency synthesizer to achieve high accuracy and immunity to variations of input and output frequencies. The clock generation IC includes an internal oscillator reference, which is optimized for clock synchronization of microprocessors and other digital logic.

The PL580-39QI can accept input reference frequencies between 4.0 and 80.0 MHz. Its outputs provide frequencies between 0.3 and 25.0 MHz. When the PLL is locked, either the output frequency is determined by the reference oscillator or it may be programmed by an external digital control device using the three-wire serial interface. The usual output frequency accuracy is within ±0.02 %.

The PL580-39QI is designed primarily for two types of applications. Firstly, in frequency synthesis where it can be used as a frequency generation device, it works as a low-jitter, highly accurate signal generator and can be used in a wide range of applications such as signal synthesizers, signal analyzers and instruments for testing, verification and calibration. Secondly, in clock synchronization applications, it can be used to provide a clock synchronization signal and to convert or divide a signal from an external clock source, such as an oscillator.

The PL580-39QI consists of an internal oscillator, a PLL, a frequency divider, and an output control circuit, along with built-in error correction and very low jitter. The internal oscillator is used as the reference for the PLL, which is then used to synthesize the output frequency. This frequency synthesizer generates a signal whose frequency is determined by the reference frequency and the programmed values of the PLL, the frequency divider, and the output control circuit. The output frequency can be kept very accurate by programming the PLL, while the jitter can be minimized. The error correction circuit can reduce the frequency error in the output signal even further.

The PLL of the PL580-39QI is a stable loop, with a wide operating range and very low jitter. The internal frequency synthesizer can generate any frequency between 0.3 and 80.0 MHz with an accuracy of ± 0.02%. The device also contains a highly reliable frequency divider, and an output control circuit; these enable the output frequency to be divided and output signals to be kept very accurate, while maintaining very low jitter. The PLL eliminates the need for traditional dividers, multipliers, and phase-switched oscillators.

In addition, the PL580-39QI contains a variety of protection features such as overtemperature protection and reset, enabling it to withstand a wide range of operating temperatures. It also includes an internal oscillator trimming and monitoring circuit, which allows for a highly accurate calibration. The device includes a low-current power down mode as well, which reduces the power consumption during inactivity.

The PL580-39QI is suitable for a wide range of applications, including frequency synthesizers, clock synchronization, and digital logic clock sources. It can be used in personal computers, embedded systems, and communications equipment. With its high accuracy, low jitter, and wide operating range, the PL580-39QI is a reliable choice for many applications that require a highly stable frequency reference.

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