ICS651M

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The ICS651M is a low-power, single-mode PLL-based clock/timing device used for many applications in digital communication systems. It has many features, including low jitter and high accuracy, which make it ideal for use in broadcast and cable television, cellular, WLAN, Ethernet, Bluetooth, and other applications.

The ICS651M harnesses a combination of advanced silicon technologies to eliminate the need for an external crystal or oscillator. It uses a PLL to lock the reference clock input to the selected programming clock speed, and outputs the synthesized clock at this desired speed.

One of the primary benefits of the ICS651M is that it can accurately synthesize a wide range of fractional and sub-fractional clock rates from a single reference clock. This allows the ICS651M to generate multiple clock signals that are closely synchronized with each other for applications that require a precise balance of clock speed and on-screen timing, such as digital transmission and digital secondary audio coding (SACD).

The ICS651M works by controlling the frequency of a reference clock input, such as an oscillator or crystal-based signal. The reference clock is divided by an internal divide-by-N (DBN) circuit and then sent to the PLL and frequency multiplier. Here, the signal is multiplied and divided to the target frequency of the output clock.

The advantage of the ICS651M compared to other clock/timing devices is that it has a much lower power consumption and is more precise than most. This is due to its fractional rate function, which allows it to multiply or divide the reference clock frequency by any factor. This allows the ICS651M to be used in applications where precise timing is a must, as the accuracy of the fractions and subfractional clock rates is ensured.

Another advantage of the ICS651M is that it can be used as a clock buffer and driver. This means that it can drive multiple clocks with one device, thus reducing the total number of components necessary in a system. This is especially beneficial for applications where size and power restrictions are critical, such as in mobile phone or astronautical applications.

Finally, the ICS651M is designed to be robust and reliable. Its design eliminates the need for manual tuning of the clock, helps reduce board space and parts count, and its internal architectures simplify the design of complex systems. All these features make the ICS651M a desirable choice for many clock/timing applications.

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