CDCDLP223PW

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The CDCDLP223PW is a clock generation and PLL (Phase Locked Loop) device thatallow users to control higher than 1 GHz frequencies. It can generate an output signal frequency that is proportional to a reference frequency and with fractional-N algorithm, it helps to increase the accuracy of the output frequency.CDCDLP223PW finds its application in high-speed closed loop systems such as DDR memory, chip set, and gigabit Ethernet systems. It is also suitable for other applications like automotive, optical networking, radio frequency, and microwave systems.

CDCDLP223PW operating voltage of 1.8 V to 3.6 V, while the operating temperature range is 0 to -70 degree Celsius, making it suitable for system-level integration and design.The device has integrated PLL, loop filter, VCO, prescaler, and reference divider, making it an all-in-one solution for high frequency clock sourcing and generation. The device features input frequency up to 900 MHz and output frequency up to 1.25 GHz. Moreover, it supports fractional-N, integral-N and very low jitter (1 ps) for clock source for DDR4 and DDR3 memory systems. The device also supports power-down mode, making it ideal for applications with high power management capability.

The working principle of CDCDLP223PW can be explained as follows: The reference clock (Rclk) is sent to the reference divider, which divides the input frequency by a programmable number to obtain a smaller frequency. This frequency is then sent to the phase detector, which compares the divided frequency with a reference frequency and generates a phase difference signal. This signal is then used to correct the frequency errors in the loop filter, which is a programmable capacitor-resistor filter. The output of the loop filter is then used to control the VCO (Voltage Controlled Oscillator) to adjust the output frequency to match the reference frequency. Lastly, the output of the VCO is then sent to the prescaler to generate a final output frequency which is proportional to the reference frequency.

CDCDLP223PW is designed to reduce system-level noise levels due to its low jitter, integrated programmable loop filter, and integrated VCO. Its low-power operation also allows for better system integration and power optimization. Moreover, the device is compatible with many software development kits and design tools, making it easy to integrate into any system design. CDCDLP223PW is highly reliable for long-term usage and hence, is a suitable choice for various high-speed closed loop systems.

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