CY7B9920-5SC

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The CY7B9920-5SC clock generator is a widely-used clock/timing component that is typically used in radio frequency (RF) and communications applications. It is capable of providing both digital and analog signals with frequencies ranging from 0.1MHz to 100MHz. This component can be used in various timing applications, including high-frequency generator in data communication, timing control of digital signal processors, and RF squelch.

The CY7B9920-5SC is a single, low-power CMOS clock generator/PLL designed to provide both digital and analog signals in applications requiring low jitter and wide output frequency range. It is designed for high reliability in general-purpose timing applications.

The CY7B9920-5SC has two oscillator banks, one producing a digital clock output, and the other designed to generate an intermediate frequency (IF) signal. The digital output can be used to generate frequencies up to 100 MHz and is fully programmable, allowing for custom frequencies. It also has a programmable spread spectrum feature to reduce EMI. The analog output supports frequencies from 0.1 MHz to 100 MHz.

The CY7B9920-5SC uses a Phase-Locked Loop (PLL) to generate its output frequencies. The PLL consists of an oscillator, a phase-frequency detector, a loop filter, and a voltage-controlled oscillator (VCO). The oscillator generates a fixed frequency clock signal that is input to the phase-frequency detector. The detector compares the phase and frequency of the oscillator\'s output with the reference clock, and generates a voltage proportional to the difference in phase and frequency.

The voltage generated by the phase-frequency detector is then input to the loop filter, where it is filtered and amplified. The filtered and amplified signal is then input to the VCO, which then generates an output frequency based on the input signal. By controlling the frequency of the reference clock, the output frequency of the VCO can be controlled.

The device also has an integrated clock synthesizer that provides a programmable output frequency for the digital output pin. This feature allows for the output frequency to be adjustable, giving the user the ability to tailor the digital signals to the specific application.

The CY7B9920-5SC also supports I2C control, which provides a convenient way to program the device and monitor its performance, as well as the built-in watchdog circuitry to protect the device from unauthorized access.

In summary, the CY7B9920-5SC is a highly-reliable, low-power CMOS clock generator/PLL designed to provide both digital and analog signals in applications requiring low jitter and wide output frequency range. It is capable of generating frequencies up to 100 MHz, and can be programmed with a wide variety of frequencies. It also supports I2C control and built-in watchdog circuitry. This makes it a great choice for many clock/timing applications.

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