IDT2308A-2DCI

Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers

IDT2308A-2DCI is a low-jitter, programmable PLL clock generator and fanout product optimized for frequency synthesis and clock distribution applications. This product is a digital PLL product from Integrated Device Technology (IDT). It provides the flexibility and low power necessary for high performance devices in telecom and data communications systems.

Application Fields

The IDT2308A-2DCI is designed to deliver low jitter, programmable clock outputs in applications such as telecom and data communications, optical networking, storage and servers, metro Ethernet, media servers, broadcast and professional audio/video systems, medical imaging and instrumentation, test and measurement systems, and MDIO applications.

Working Principle

The working principle of IDT2308A-2DCI can be understood in the context of a PLL. The PLL essentially combines an oscillator, phase detector, and a low pass filter to generate a stabilized clock frequency, which is called the PLL or frequency synthesizer. An oscillator creates electrical signals of a particular frequency and the phase detector compares the phase of the incoming signal to the phase of the oscillator\'s output. The phase detector then creates an error signal, which drives a low pass filter. Based on this output, the filter adjusts the control voltage of the oscillator over time to create a stable output clock frequency.

The IDT2308A-2DCI PLL clock generator and fanout product utilizes this same working principle. The device consists of a programmable PLL, four clock buffers and a flexible fanout buffer that can be programmed to output various frequencies. The programmable PLL allows the device to generate clock outputs of different frequencies and different outputs. The four clock buffers provide flexibility to the device to be configured as four inputs, allowing it to support multiple clock sources. The programmable fanout buffer can be programmed to different divide-by values, allowing for the generation of clock frequencies that are a multiple of the user-input frequency.

Conclusion

IDT2308A-2DCI is an ideal clock generator and fanout product optimized for frequency synthesis and clock distribution applications. It is equipped with a programmable PLL, four clock buffers and a programmable fan-out buffer and can be used to generate multiple clock frequencies. The combination of flexibility and low power makes this product well suited for use in a variety of applications.