84021BYLF

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84021BYLF is a modern clock generator and PLL frequency synthesizer integrated circuit (IC). The device has a wide range of applications and is suitable for a variety of frequency synthesis applications requiring low jitter and very low power consumption.

The 84021BYLF consists of two complete oscillators and frequency synthesizers in a single integrated circuit. Each oscillator and synthesizer can be used independently or as a pair. The freqency synthesizer portion of the device provides low-jitter oscillator tuning range of 100 kHz to 1.2 GHz. The device has programmable output power levels, which are adjustable in 0.1 dB increments from 0 dBm up to +10 dBm. Additionally, the device can provide up to 16 combinations of reference and fixed frequencies, enabling it to provide precise frequency division applications.

The working principle of the 84021BYLF device is based on the phase-locked loop (PLL) technology. The PLL consists of two main blocks: an oscillator and a phase detector. The oscillator combines a voltage-controlled oscillator (VCO) with a charge pump and voltage-controlled filter (VCF). The phase detector compares the input reference signal to the VCO\'s output by creating a control voltage. This voltage is used by the VCO to adjust the frequency of the oscillator. The output of the VCO is then used as the output of the synthesizer.

The 84021BYLF device provides several features to ensure the accuracy and reliability of the PLL-synthesized output. First, the device includes a low-jitter PLL loop filter, which helps to reduce the amount of jitter present on the output. Second, the device includes a differential clock output, which helps to reduce EMI and crosstalk. Lastly, the device supports fully integrated spread spectrum clocking (SSC), which helps to reduce EMI emissions.

Overall, the 84021BYLF is an ideal device for a wide range of clock generator and frequency synthesizer applications. Its low jitter and low power consumption make it suitable for a variety of projects. The device\'s wide range of features, such as its differential clock output, spread spectrum clocking, and adjustable output power, provide the user with a high degree of flexibility for a wide range of applications.

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