849N212CKI-004LF

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The 849N212CKI-004LF clock generator is an integrated circuit for generating high frequency clock signals. It is typically used in communications, computer, and wireless applications. It is capable of generating clock signals from 5 MHz to 7 GHz. It is a two-stage phase-locked loop (PLL) design which utilizes a highly linear frequency synthesizer to produce an accurate and stable clock frequency with minimal jitter. The 849N212CKI-004LF design is suitable for almost all modern communication networks, such as GSM, WCDMA, LTE, and UMTS.

The 849N212CKI-004LF takes an input reference clock signal, typically a crystal oscillator, and produces an output clock signal which is phase locked to the reference frequency. The core of the device is a phase frequency detector (PFD), which compares the phase and frequency of the reference signal to the output signal. When the PFD detects a difference between the two signals, it produces an error signal that is used to adjust the center frequency of the output signal. This feedback loop not only provides circuit stability, but also eliminates any jitter in the output clock signal. This is possible because the PFD can detect any discrepancy between the two signals as small as one picosecond (1ns).

The 849N212CKI-004LF contains several other components which help to control the center frequency of the output signal. These components include a charge pump, a programmable divide-by-N counter, a voltage-controlled oscillator (VCO) and a low-jitter voltage-controlled crystal oscillator (VCXO). The charge pump provides the necessary current to adjust the center frequency of the output signal. The programmable divide-by-N counter can divide the output signal by any given number up to an upper limit. The VCO and VCXO provide the tuning range for the output frequency.

The 849N212CKI-004LF is an effective and widely used device for generating high frequency clock signals in a variety of applications, such as telecommunications, computers, and wireless devices. The device utilizes advanced PLL and frequency synthesizer technology to produce an extremely accurate and reliable signal, significantly reducing jitter and improving circuit performance. It is an excellent choice for any application requiring a high-precision clock signal.

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