87951AYI-147LF

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The 87951AYI-147LF is a clock generator, PLL, frequency synthesizer typically used in a variety of consumer and industrial applications, most commonly for radio frequency (RF) and radio control (RC) applications. It is designed to synchronize the data transmission and reception of an application by providing the system with a controlled clock frequency. This can be done either by synthesizing a frequency from an existing oscillator or by generating new frequencies through modulation techniques. It can also be used to provide microstepping and frequency hopping capabilities to a system.

The 87951AYI-147LF is based on a multiphase PLL structure and utilizes differential outputs. It offers a wide frequency range up to 960 MHz while consuming relatively low power. The unit is manufactured on a 0.5mm pitch 28 pins SMT package and can operate in a wide range of temperatures.

In terms of application field, the 87951AYI-147LF can be used in a variety of consumer and industrial products such as Bluetooth and ZigBee transceivers, Wi-Fi access points, microwave ovens, automotive telematics, medical devices, smart metering systems, etc. It can also be used in entertainment and gaming consoles, wireless networks, and a number of RF and RC devices.

The 87951AYI-147LF is based on a direct digital synthesis technology that enables it to generate highly accurate frequencies. It offers clock multiplication, division, holdover, and spread spectrum capabilities. These features provide a high degree of precision and accuracy when generating frequencies and allow clock synchronization in data transmission/reception systems.

The working principle of the 87951AYI-147LF lies in its ability to adjust the frequency of a reference clock to match the desired frequency output. This is done via a phase-locked loop (PLL) whose components include a frequency detector, a phase detector, a voltage-controlled oscillator (VCO), a divider, and a low-pass filter. The frequency detector is responsible for detecting any discrepancies between the reference frequency and the desired output frequency and then sending a signal back to the phase detector. The phase detector detects the phase mismatch between the reference and the desired output and then sends a corresponding voltage to the VCO. The VCO then adjusts the frequency of its output until it matches the desired output frequency. The output of the VCO is then sent to a divider that divides the frequency and sends it to the low-pass filter, which filters any noise and spurious signals from the output.

In conclusion, the 87951AYI-147LF is a multiphase PLL based clock generator, PLL, and frequency synthesizer typically used in consumer and industrial applications. It can generate highly accurate frequencies while consuming relatively low power and offers features such as clock multiplication, division, holdover, and spread spectrum. The unit is based on a direct digital synthesis technology and uses a PLL structure to adjust the reference frequency to the desired output frequency.

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