89H16NT8BG2ZCHL8

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Clock generators, PLLs, Frequency Synthesizers are used to generate a precise time interval and/or frequency. They accomplish this mission by using a precise reference frequency, combining and controlling it with various circuitry. In this article, we will discuss the 89H16NT8BG2ZCHL8 and its application field and working principle.

The 89H16NT8BG2ZCHL8 belongs to a family of dual-output digital PLL clock generator ICs that provide two reference signals in the frequency range of 9MHz to 200MHz. It has two independent outputs, referred to as A and B. It also has a second asynchronous all-random stroke input, referred to as R. It provides an integrated power-on reset output signal (RESET). It also has an integrated programmable logic array (PLA) that provides a combination circuit consisting of eight logic gates.

Application Field

The 89H16NT8BG2ZCHL8 is suitable for many applications that require two synchronous frequencies or one frequency spread-spectrum signal and one synchronous frequency. It is ideally suited for high-speed data transmission or data communications where it is necessary to accurately control the speed of the device. It is often used in transmissions such as LAN, mobile telephony, and satellite communications. The 89H16NT8BG2ZCHL8 is also often used in cameras, computer monitors, TV sets, and other consumer electronic devices.

Working Principle

The principle of the 89H16NT8BG2ZCHL8 can be divided into three parts: the reference oscillator, the phase-locked loop (PLL) circuitry, and the comparator. The reference oscillator is a low-frequency oscillator circuit which generates a stable reference frequency with a low enough noise level that it can be used as the basis of a clock signal. This reference frequency is then applied to the PLL circuitry, where it is compared with a similar signal generated by the device\'s own oscillator circuit.

The PLL circuitry then uses the difference between the two signals to adjust the frequency of the device\'s own oscillator circuit so that it remains exactly in lock with the reference oscillator. This frequency-locked signal is then applied to the comparator which switches high or low depending on the level of the signal. This produces an output signal from the device which can be used as a clock signal.

Conclusion

The 89H16NT8BG2ZCHL8 is a dual-output digital PLL clock generator IC that is ideal for applications which require two synchronous frequencies or one frequency spread-spectrum signal and one synchronous frequency. It uses a low-frequency reference oscillator, a PLL circuitry, and a comparator to generate the output signals. This device is suitable for a variety of applications including LAN, mobile telephony, satellite communications, and consumer electronic devices.

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