MC88915FN55R2 Integrated Circuits (ICs)

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Clock generators, PLLs, and frequency synthesizers are essential components for a wide variety of onboard electronics, such as cell phones, laptops, and tablets. They are used to provide the control and synchronization to various peripheral components and devices, such as digital signal processors, wireless communication systems, radar systems, navigation systems, and other applications requiring precise timing and frequency control.

The MC88915FN55R2 is a clock generator, phase-locked loop (PLL), and frequency synthesizer integrated circuit (IC) designed for operations up to 3.2GHz. It is designed to meet the stringent requirements of modern communication and military systems that require excellent noise isolation, low jitter, low power consumption, and high band accuracy. The MC88915FN55R2 supports both differential and single-ended output types, allowing it to be used in applications requiring either type.

The main application fields of the MC88915FN55R2 clock generator/PLL/frequency synthesizer IC are cellular and wireless base station communication systems, as well as communication systems for satellite and radar systems. It also finds use in general-purpose timing and synchronization applications, such as in clock/timing chipsets and ASICs.

The MC88915FN55R2 features a built-in PLL-based frequency synthesizer that generates stable high-frequency clocks up to 3.2GHz. The PLL generates numerical control output (NCO) frequencies derived from a reference clock up to 1.6GHz. The frequency synthesis operation of the device is enabled by a digital phase-locked loop (DPLL) that allows for the selection of high-frequency clocks from a wide range of input reference frequencies. The built-in frequency synthesizer includes a wide-band frequency divider that can be set to generate the desired output frequencies. The frequency synthesis operation begins by selecting the reference clock frequency, which is then divided down to generate the desired NCO frequency.

The device features a programmable divide-by-N block that allows for the selection of fixed divide by 1,2,4,8 and 16 frequency ratios. This helps to ensure that generated NCO frequencies match the desired output frequency ratio. The MC88915FN55R2 also includes a digital loop filter that enables fine control of output frequency settling time. The device is designed to achieve very low jitter at the output frequency and is suitable for use in systems that require precision timing and synchronization.

In addition, the MC88915FN55R2 digital phase-locked loop circuit also has an integrated phase detector, charge pump, loop filter, VCO, and loop bandwidth control logic. The device provides pin-selectable loop bandwidth allowing for the optimization of loop performance over a wide frequency range. The digital phase-locked loop also has adjustable acceleration, deceleration and calibration cycles, providing the best possible control of the loop over a wide frequency variation range.

Overall, the MC88915FN55R2 is an integrated circuit that provides excellent low-noise, low jitter, and low power consumption. It provides very accurate and stable frequency outputs in the range up to 3.2GHz and it is suitable for use in a wide variety of wireless and other communication systems, as well as general-purpose timing and synchronization applications.

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