NB2308AC4DTG

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The NB2308AC4DTG is a clock generator, Phase Locked Loop (PLL), and Frequency Synthesizer created by ON Semiconductor. It is a low-power, 8-output, anything-to-something clocking solution with a fully integrated PLL. It has a wide range of applications within the broadcast, information technology, and consumer electronics fields. It is capable of executing any clock combination from its 8 outputs which range from a frequency of 48MHz to 800MHz. With this feature, it can convert any input clock frequency input ranging from 12MHz to 400MHz, and can divide by integer ratios from 1 to 16.

The NB2308AC4DTG is designed to serve two primary functions including either buffering or frequency synthesis. As a buffer, the device can accept LVCMOS, HCSL, or LVDS inputs and output the same on its 8 outputs. The PLL integrated into this device also enables it to perform frequency synthesis. This enables it to generate and output different frequencies at the same time, even when the input and output frequencies are not the same. With the ability to derive reference clocks of any frequency and phase relationship and to multiplex clocks, the NB2308AC4DTG can cover the needs of multiple applications.

The NB2308AC4DTG is equipped with multiple feature-sets to enhance its performance and output. It has an advanced low jitter output clock for noise reduction, low jitter outputs for single-ended and differential outputs, wide frequency range capabilities, internal spread spectrum for EMI reduction, duty cycle correction for improved accuracy, dynamic power management for reduced power consumption and heat output, built-in frequency synthesizer for flexible clock outputs, and input-output skew controls for improved clock customization.

Working Principle

The NB2308AC4DTG is based on an all-digital PLL which is used to synthesize and generate all of the output frequencies. It uses a combination of an oscillator, digital phase-frequency detector (PFD), charge pump, and digital low pass filter (LPF) to generate all of the output frequencies. The frequency reference input is used to generate the oscillator frequency and is used by the PFD to generate the charge pump current. The charge pump current is then sent to the LPF, where it converts it into a voltage which is used to control the oscillator frequency. The oscillator frequency is then fed back to the PFD where it is used to generate the desired output frequency.

The NB2308AC4DTG also has several built-in features for improved output signals. Dynamic Output Power Management (DPOM) is used to reduce power consumption and heat output. Input-Output Skew Controls are used for improved clock customization. Duty Cycle Correction (DCC) is used for enhanced accuracy. And finally the spread spectrum is used for EMI reduction.

Advantages

The NB2308AC4DTG is incredibly versatile with its wide range of applications, input and output frequency range, as well as its ability to execute any clock combination. Thanks to its multiple features such as low jitter output clock, wide frequency range capabilities, and spread spectrum, the device performs efficiently and accurately. Furthermore, its dynamic power management feature helps to reduce power consumption and heat output. This makes it a great choice for applications that require lower power usage and need an energy-efficient clock solution.

Conclusion

The NB2308AC4DTG is a highly efficient and reliable clock generator. It is a great choice for applications that range from broadcast systems to information technology and consumer electronics. It is equipped with advanced features such as low jitter output clock, wide frequency range capabilities, internal spread spectrum,Duty Cycle Correction, Dynamic Power Management, and Input-Output Skew Control. All of these features, combined with its low power consumption and versatile capabilities, make it a great choice for anyone looking for a reliable and energy efficient clock solution.

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