CY25403SXC-009T

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The CY25403SXC-009T is a clock generator, programmable frequency synthesizer designed by Cypress Semiconductor. It contains a low-phase-noise frequency synthesizer and two PLLs integrated with an on-chip oscillator. The CY25403SXC-009T is a versatile and powerful frequency synthesizer with a combination of high performance and low operating power.

The main application fields for CY25403SXC-009T include broadcast radios, military and aviation communication radios, navigation systems, security and surveillance systems, GPS receivers, and other communications equipments. The integrated oscillator has high frequency stability and low phase noise. The CY25403SXC-009T also has programmable reference frequency range of 10 kHz to 2 MHz, low pull-in range, and low operating power consumption.

The working principle of the CY25403SXC-009T is that it uses a phase-locked loop (PLL) to maintain the output frequency by comparing the phase of the reference signal with that of the feedback signal. The phase and frequency comparator of the PLL detects phase difference between the reference signal and the feedback signal and produce an output signal, which is then compared with a reference voltage by the loop filter. The amount of phase difference and the magnitude of the reference voltage decide the amount of loop filter output signal acting on the VCO.

The CY25403SXC-009T can also be used in parallel clock distributions as a DCO or DPO clock. The DPO or DCO clock signal is generated by the DCO module or DPO module. The output signal of the DPO or DCO module is then processed and programmed through the DPO or DCO digital filter and the silicon oscillator in the chip. The output signal is then connected to the clock outputs of the chip through the output pin. In addition, the frequency of the oscillator is programmed through the digital control lines of the chip.

The CY25403SXC-009T also contains a secondary PLL which can generate more stable and lower noise signals than the primary PLL, making it a great choice for applications that require both high accuracy and low noise performance. The PLL structure also allows for greater frequency flexibility, including adjustable frequency ranges and programmable delay.

Overall, the CY25403SXC-009T is an advanced frequency synthesizer with a combination of high performance, low operating power, good features, and versatility. Its wide variety of application fields, low pull-in range, and low phase noise make it a great choice for communications applications. Its main working principles are its programmable frequency synthesiser, PLLs, and digital filter making it an ideal choice for clock distributions and communications equipment.

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