CY2308SC-3

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The CY2308SC-3 is a high-performance, frequency-synthesizer IC that converts low-frequency reference clocks to higher frequencies with minimum jitter, making it ideal for various timing, clocking, and multiplexing applications. It integrates a frequency divider, a phase-locked loop (PLL), a variable-frequency oscillator (VCO), and a predefined program to generate the output clock signals. It can generate output clocks in the range of 41 kHz to 800 MHz with a reference clock from 7.5 kHz to 198 MHz. The device is fabricated with CMOS technology and has low power dissipation, low phase noise, and high performance for both input and output frequencies.

CY2308SC-3 simplifies the design and implementation of clock distribution schemes in digital systems and embedded applications. Its output signals are precise, low-jitter, and programmable with a low-power operating frequency. The device\'s programming options include selecting frequencies in increments of 25 kHz, setting the output frequency to 0.1 or 0.2% of the reference frequency, enabling/disabling all of the output clock signals, or setting the output duty cycle. It supports a wide range of output power supply voltages, including 3.3V, 2.5V, 1.8V, 1.2V and 0.9V. It can also accept input clocks from a wide range of frequencies, including external reference clock signals, crystals, ceramic resonators, and Variable Frequency Oscillator (VFO) clocks.

The working principle of the CY2308SC-3 is based on a phase-locked loop (PLL) which synchronizes an oscillator to the incoming reference clocks. The output frequency is determined by the input frequency, the PLL\'s settings, and the programmed frequency or duty cycle. The device contains a VCO, an analog to digital converter (ADC), and a digital to analog converter (DAC) to convert the reference clock frequency to the desired output frequency. In addition, the programmable logic circuitry within the device allows for manual adjustment of the output frequency and clock duty cycle.

CY2308SC-3 is suitable for applications where precise timing and low jitter are required such as cable/satellite set-top boxes, wireless networks, video and imaging systems, clocks and timing systems, and clock generators for ASICs, FPGAs, and processor cores. It is also used in industrial control and instrumentation systems, automotive applications, home appliances, and point-of-sale systems. The frequency synthesizer can also be used in data and communications systems, medical imaging and diagnostic equipment, and portable audio/video systems.

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