MK2704SLF

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Clock/Timing is an important factor to be considered in almost any computer and electronics applications. Many of them require accurate, flexible and reliable timing management. To meet these requirements, Clock/Timing devices such as clock generators, phase-locked loops (PLLs), and frequency synthesizers (FSs) play a vital role. The MK2704SLF is one of these devices. It is a highly integrated, low-power, low-jitter programmable clock generator for advanced timing requirements with excellent performance. It consists of the main block, a PLL, an output buffer stage, crystal oscillator and output divider.

The main block, also known as the clock control block, is responsible for generating the clock outputs and is programmable via I2C communications. It consists of a programmable clock generator plus programmable dividers, PLL and loop filter. The clock generator uses divide-by-8 or divide-by-64 counter to generate the output clock while PLL is used to divide the clock frequency. The output divider takes the output of the PLL and creates the output clocks with different frequencies.

The PLL is an analog control circuit operating on the principle of synchronizing two different system frequencies. The input of the PLL is used to synchronize the PLL frequency to the input frequency. It consists of a voltage-controlled oscillator (VCO), a loop filter, and pre-scaler. The VCO is used to generate the output frequency, the loop filter is employed to minimize the noise and the pre-scaler produces the VCO frequency.

The output buffer stage is a kind of power amplifier circuit used to transfer the digital signals from the internal logic circuits to the external circuit. It is also used to amplify the output signals of the PLL, crystal oscillator, and output dividers. The output buffer stage can be programmed to provide different drive strengths according to the output conditions.

The crystal oscillator is responsible for providing the stable clock frequency. The crystal oscillator provides an accurate frequency to be used in the PLL. To reduce the phase jitter and to improve the accuracy, the frequency of the crystal oscillator is usually higher than the frequency of the output clocks.

The output divider is used to divide the frequency of the output clocks. The output clock frequencies are derived from the PLL and are further divided to generate the desired output clocks. The output divider can be programmed to provide various output frequencies.

The MK2704SLF is an ideal solution for generating low-jitter clock for both consumer and industrial applications. It is capable of producing low-power, high-speed clock outputs from a single clock source. The device can be programmed to provide various frequency dividers and output buffer strength for a wide range of clock frequency applications. It is also capable of controlling its own voltage, temperature, and environment for better system performance.

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