8T49N008A-045NLGI8

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The 8T49N008A-045NLGI8 Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers is a low-skew clock generator and buffer featuring 24 user-selectable frequencies and up to 16 outputs. It can generate output clocks with frequencies up to 500MHz and has an input reference clock range of 10 MHz to 450MHz. It is based on a Phase-Locked Loop (PLL) architecture that supports a wide frequency range, allowing the device to generate the remaining half dozen output clock frequencies. This device offers superior accuracy and superior jitter performance, meaning that the clocks generated will be very precisely timed.

The 8T49N008A-045NLGI8 also features an optional programmable bias current trim on each output to compensate for output buffer fluctuations due to temperature and aging of the device. This ensures that the output voltages and frequencies remain as close to the specifications as possible. It has an adjustable PLL loop parameters to enable the designer to customize output frequency ranges and ensure design margins are met.

Apart from these features the 8T49N008A-045NLGI8 also has the industry standard functions such as spread spectrum, multi-deck clock stretching, output auto-enable, on/off pin, digital loop bandwidth control and PLL signal detector input functions. The device also has multiple power supplies, thus enabling the device to be used with multiple power rails.

The 8T49N008A-045NLGI8 operating principle is based on the Phase-Locked Loop (PLL) architecture. The PLL is a control system that employs a feedback loop to synchronize an output signal with a reference signal. The output of the PLL includes the reference signal, which is multiplied to obtain the desired output frequency. The phase detector compares the phase of the output signal and the reference signal to determine the phase difference. This phase difference is then used to control a voltage controlled oscillator (VCO), which in turn controls the output frequency of the PLL. The PLL also includes a loop filter, which is designed to reduce the phase error and thus keep the output signal locked to the reference signal.

The 8T49N008A-045NLGI8 is suitable for applications such as disk drives, communications systems, digital cameras, optical devices, SDI and HDMI displays, base station multiplexers, and signal processing systems. The 8T49N008A-045NLGI8 not only provides superior jitter performance, but also offers fast signal locking, low output-to-output skew, and excellent signal integrity.

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