PL560-48QC-R

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The PL560-48QC-R is a quintuple clock generator PLL in a 10-lead LLP (Low Profile Quad Flat) or QFN (Quad Flat No-Lead) package. It is designed to cover a variety of applications such as broadcast, instrumentation, and military/space. In this article, we will explore PL560-48QC-R\'s application field and working principle in detail.

Application Field and Working Principle

The PL560-48QC-R is a precision clock generator that provides high quality output signals for system clock synchronization. It supports a wide range of applications including instrumentation, broadcast, and military/space, where critical timing accuracy and reliability are important. The PL560-48QC-R is based on a quintuple PLL system, which provides exacting output frequency stability and accuracy control over a wide temperature range. This PLL system consists of a main PLL, an adjustable auxiliary PLL, and three fixed frequency PLLs.

The main PLL of the PL560-48QC-R features a VCO (Voltage-Controlled Oscillator) that can be configured for either a fractional-N PLL or an integer-N PLL, depending on the desired output frequency and system requirements. The PLL comprises a phase detector, a low-pass filter, and a divider. When the input reference frequency is applied to the phase detector, it compares it with the generated VCO frequency to generate an error signal that is filtered and used to adjust the VCO frequency. The feedback loop closes when the error signal is reduced to zero, which is the desired frequency.

The adjustable auxiliary PLL of the PL560-48QC-R is used to reduce power consumption and improve temperature stability of the main PLL. It features an internal loop filter to minimize fluctuations in the output frequency over temperature. Furthermore, the adjustable auxiliary PLL can be configured to provide a greater range of output frequencies while increasing the internal loop filter performance. The three fixed frequency PLLs are used to provide additional frequency sources from both the main and auxiliary PLLs.

The PL560-48QC-R has low power consumption compared to other PLLs and is designed for high accuracy and stability over a wide temperature range. It supports a wide range of input frequencies from 8MHz up to 160MHz and can generate output frequencies up to 5GHz. It provides precise output frequency stability with a frequency accuracy of +-2ppm and a frequency jitter of less than 1ps. The PL560-48QC-R also features other features, such as programmable spread-spectrum modulation, data-rate adjustment, and auto-calibration.

Conclusion

The PL560-48QC-R is a quintuple PLL clock generator designed to cover a wide range of applications. It features a main PLL, adjustable auxiliary PLL, and three fixed frequency PLLs. It supports a wide range of input frequencies, can generate output frequencies up to 5GHz, and provides precise output frequency stability with a frequency accuracy of +-2ppm and a frequency jitter of less than 1ps. This makes it an ideal solution for applications where critical timing accuracy and reliability are important.

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