8T49N222B-100NLGI8

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The 8T49N222B-100NLGI8 by IDT is a clock generation chip designed to provide cost-effective and highly reliable clocking solutions. This device is part of the VersaClock 6P family which integrates analog and digital PLL and both I2C and SPI control interface. Typically used in telecom and networking applications, this chip is capable of generating many different frequencies.

The 8T49N222B-100NLGI8 belongs to the Clock/Timing category and more specifically to Clock Generators, PLLs and Frequency Synthesizers. This device is mainly used in telecom and networking application, as it provides essential frequency synchronizations.

The 8T49N222B-100NLGI8 also provides a high frequency resolution and output accuracy, ranging from about 0.4 ppm to 161 ppm. Output frequencies can range from 200kHz to 400Mhz. The device includes both an I2C and SPI interface and multiple reference inputs from both crystal sources and reference clock input sources. It also includes a voltage controlled oscillator and a wide range of output drivers.

In terms of power consumption, the 8T49N222B-100NLGI8 has a maximum consumption of 12.5mW, with a typical consumption of around 8.5mW, making it a very efficient device that can be used in low-power applications. Additionally, this device has a very low power-down current allowing it to be used in battery-powered applications.

The working principle of the 8T49N222B-100NLGI8 is based on the inclusion of an integrated phase-locked loop (PLL). The main components of this PLL are a voltage-controlled oscillator (VCO), a phase frequency detector (PFD) for comparing the input reference frequency with the output VCO frequency and a digital divider for enabling the low-power output driver.

The 8T49N222B-100NLGI8 PLL has two main range modes: frequency synthesis and frequency locking. The frequency synthesis mode is used to generate frequencies from the VCO which are then divided by the digital divider, while the frequency locking mode is used to lock the VCO frequency to an input reference frequency.

The 8T49N222B-100NLGI8 has many features that make it an ideal choice for telecom and networking applications. It has a wide range of frequency outputs, low power consumption and low power-down current. It also has a high frequency resolution and output accuracy. Plus, this device has both an I2C and SPI interface and multiple reference inputs, allowing for a reliable and stable clock generation.

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