PL673-51QC-R

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The PL673-51QC-R integrated circuit is a frequency synthesizer chip in the Clock/Timing category, specifically under “Clock Generators, PLLs, and Frequency Synthesizers”. It functions by using a reference frequency to generate high-precision signals with different output frequencies. The precision of the generated frequency is determined by the accuracy of the reference frequency and the design of the circuit. This makes it great for accurate frequency measurements and timing applications.

The PL673-51QC-R integrated circuit is an improved version of similar frequency synthesizers. It has better stability, making it ideal for applications that require high precision timing, such as digital and analog clocks, watchtime clocks and counting systems. Its reference frequency can be as low as 1.5MHz, allowing for a wide range of frequency outputs with good precision. It also offers a faster operating speed, making it more suitable for high-speed applications. It features a low power consumption and a power-down function, which makes it energy efficient.

The PL673-51QC-R integrated circuit features a low-voltage input circuitry, which allows it to be powered from a 3.0Vdc source. The input voltage range is from 1.8Vdc to 3.6Vdc. It also has an internal temperature-compensating crystal, which can be used to program the output frequency with an accuracy of 0.1%. The integrated circuit is an 8-bit digital code device that can be programmed to output a single, dual or multi frequencies using the serial programming interfaces. The operating temperature range is from -40 to + 85°C, and the package size is 10mm x 10mm.

The working principle of the PL673-51QC-R integrated circuit is based on a Phase Lock Loop (PLL) principle. The chip takes a reference frequency, which can be provided by a quartz crystal, and uses it to generate signals with different output frequencies. The PLL contains a voltage-controlled oscillator (VCO), several frequency division circuits, a reference frequency amplifier circuit and a phase comparator circuit. The VCO generates an output signal with a frequency determined by the input voltage. The frequency division circuits then divide this output signal by a certain factor to generate multiple output signals with different frequencies. The reference frequency amplifier circuit and the phase comparator circuit work together to control the frequency of the output signal, ensuring that it follows the reference frequency accurately.

The PL673-51QC-R integrated circuit is a powerful frequency synthesizer which can be used for a variety of applications. Its ability to generate precise clock and timing signals with different frequencies make it suitable for many digital and analog clock systems, watchtime clocks and counting systems. Its small size and low power consumption provide an added advantage over other frequency synthesizers, making it an ideal choice for high-precision timing applications.

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