P1819BF-08TR

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Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers are widely used in many different applications due to their accuracy and reliability. The P1819BF-08TR is a low power and high speed lock-in synthesizer chip. It works well in a wide range of working frequencies and input signals. This chip can be used in a number of applications including cellular telecommunication, digital video broadcasting, and radar.

In particular, the P1819BF-08TR has been widely used in the GPS receiver. It contains a PLL (Phase Lock Loop) that locks in on a satellite signal, enables the receiver to achieve precise temporal location. The P1819BF-08TR is also used in modems and digital communication systems. It features a wide range of possible inputs from broadband analog sources and is capable of dividing a received frequency down to a fraction of its original bandwidth.

The P1819BF-08TR can also be used in clock distribution networks, providing a stable clock signal for synchronizing multiple circuit boards. In addition, it is suitable for standby power supply system in mobile phones, as its low power consumption reduces the risk of battery drain associated with high-frequency clock oscillators, and ensures the phone is powered off in standby mode.

The working principle of the P1819BF-08TR is based on a pair of exclusive oscillators. One handles the reference frequency, while the other is the Feedback Oscillator, which provides a sample frequency to be compared with the reference. This is done by a comparator to detect the phase difference between the two essential frequencies.

Once the difference is detected, a digitally controlled PLL will tune the feedback oscillator to match the reference frequency. This is done by adjusting either the oscillator frequency, or alternatively, by varying the oscillator\'s bias current. In addition, the P1819BF-08TR has an additional accumulator for fine-tuning the PLL to provide a better frequency resolution.

The P1819BF-08TR features a robust loop filter and frequency synthesizer that ensure a fast, reliable and accurate frequency tracking. The filter eliminates frequency monitor and noise when the frequencies are different, so that the actual control loop can operate without any interference from external interference.

Moreover, the P1819BF-08TR provides a precision frequency tuning of up to 3 kHz in a single step. This is achieved by using a DAC that is built into the chip, which controls the feedback oscillator, allowing the feedback frequency to be adjusted to the reference frequency with a very high level of accuracy.

The P1819BF-08TR is a highly capable and reliable clock generator. Its capability in terms of frequency accuracy, low power consumption, high speed and reliability make it an ideal choice for a wide range of applications including GPS receivers, digital communication systems and clock distribution networks.

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