89H32NT16BG2ZBHLI8

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89H32NT16BG2ZBHLI8 is a type of clock generator, frequency synthesizer and a programmable PLL from Inphi Corporation. It is designed to generate multiple clock frequencies from a single reference clock source. This device helps to reduce system complexity and cost by eliminating off-chip oscillator and clock buffers.

Different parameters of this device, such as enable/disable, reference clock frequency, output frequency range and feedback divider value, can be configured by programming its internal memory. This on-chip memory provides complete system state retention during power-down and power-up, eliminating the need for external memory or host processor to store the parameters.

The frequency synthesis and clock generation capabilities of the 89H32NT16BG2ZBHLI8 allows it to be used in a wide range of applications such as computer motherboards, communications systems, and consumer electronics. The most common application of this device is in microprocessor, DSP and FPGA based systems requiring low cost, low jitter and low power generation of multiple clock and signal frequencies.

The working principle of the 89H32NT16BG2ZBHLI8 is based on using a phase locked loop (PLL) to generate desired clock frequencies from a reference clock source. PLLs are basically feedback systems consisting of a reference oscillator and a voltage controlled oscillator (VCO). By adjusting various parameters such as the values of the feedback and feedback divider, charges and discharges of the VCO and voltage control coefficient, the output frequency can be precisely tuned to match the desired frequency.

The 89H32NT16BG2ZBHLI8 makes use of a fractional phase locked loop, a form of a digital PLL, in order to generate different frequencies from a single reference clock source. The feedback and feedback divider values are set to predetermined values by programming the on-chip memory. The output frequency is then tuned by fractional parts of the reference clock frequency and charged/discharge of the VCO. This ensures higher tuning resolution and better overall performance, thus providing better stability in the output frequency.

Overall, the 89H32NT16BG2ZBHLI8 performs as a low cost, low jitter and low power clock generator, programmable PLL and frequency synthesizer. It provides complete system state retention during power-down and power-up, allowing it to be used in a wide range of applications easily. It also provides higher tuning resolution by utilizing the fractional phase locked loop to generate different clock and signal frequencies from a single reference clock source.

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