MC100E111FNR2

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MC100E111FNR2 is a high-performance clock buffer with frequency synthesis capabilities and is widely used in a range of applications involving clock distribution and high-speed data routing. The device is specifically designed to improve the power efficiency of the circuit while providing precise clocking signals to the system. The MC100E111FNR2 has been widely used in telecommunication, medical, industrial and aeronautical applications as it offers excellent signal quality with a moderate power consumption.

The MC100E111FNR2 is a single 1x4 low-skew clock buffer which can be used to distribute or re-time high-speed clock inputs. The device has two variable slew rate options (1 and 2) which can be used to control the rise and fall times of the clocks. Additionally, it has a frequency synthesis capability which enables the user to input a single reference clock and generate multiple output clocks of various frequencies. The device performs frequency translation and achieves various clock output frequencies through a process of PLL synthesis which is used to synthesize high- and low-speed clocks.

The MC100E111FNR2 is constructed using advanced CMOS processes to meet high performance and speed requirements. The device is capable of operating up to 200MHz and has a propagation delay of 3.5ns, maximum. It features outputs that can be cycled at up to 200MHz and has a supply voltage of 3.3 V. The device has low input jitter of 15ps (typical) at the input and can be used to generate clocks in the frequency range of 0-100MHz.

The working principle of the MC100E111FNR2 is based on a differential PLL which is used to synthesize logical and low-frequency clocks from a single reference clock. The device integrates an internal pi-type phase/frequency detector, a programmable charge-pump circuit, an oscillator and a low-skew output set. The oscillator can be configured to run from a single reference clock or from two GPIO signals with different phase points. The internal oscillator is used to supply the clock frequencies used in PLL frequency synthesis. The programmable charge-pump circuit includes adjustable charge and discharge currents that can be used to adjust the speed and frequency of the oscillator.

The output of the device is generated using the internal low-skew output set. This set is controlled by the outputs of the amplifier and comparator and provides the flexibility to select the output levels, edge rates and duty cycles. The output can be a single clock, or multiple clock frequencies. The output levels of the device vary depending on the frequency and voltage parameters set in the configuration registers. The outputs can be individually programmed to generate any frequency from 0-100MHz, thus allowing the user to generate multiple clock frequencies from a single device.

Additionally, the device has an Input Lock Detect which is used to update the internal PLL quickly and accurately. This allows the device to detect a change in the input frequency, allowing the output clocks to be accurately synchronized with the input clock. In summary, the MC100E111FNR2 is an ideal solution for clock distribution and re-timing applications which require low-power and high-speed clocks up to 200MHz.

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