2308B-2DCG

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The 2308B-2DCG is an advanced clock generator integrated circuit (IC), which is part of a family of advanced clock generators built on a common platform. It is designed to generate and stabilize output clock signals with very low jitter and to meet the performance requirements of communication protocols such as SONET. This IC applies phase-locked loop (PLL) technology, offering frequency synthesis and clock multiplication capability. It is commonly used in high-speed networking, storage systems, and telecommunications applications.

Application Field and Working Principles

The 2308B-2DCG is designed for clock generation, buffer and jitter cleaner applications. Its applications include network clock synthesis in SONET, Ethernet, TDM and Fibre Channel systems. Additionally, it can be used for the synchronization of timing signals in high-speed clocks such as GSM, CDMA and digital television systems, as well as PLL clock synchronization.

The 2308B-2DCG clock generator IC consists of two main sections: the voltage-controlled oscillator (VCO) and the phase-frequency digital phase-locked loop. The VCO generates the input signal for the PLL section, which is then used to generate a signal with the desired frequency and phase. The frequency of the output signal is determined by the on-chip crystal oscillator, which acts as a reference frequency source. The output signal of the 2308B-2DCG is a low-jitter copy of the crystal oscillator, which is multiplied up to the desired frequency and then phase-locked to the input signal.

The 2308B-2DCG features a very low-power design, high-frequency stability, and an on-chip voltage-controlled loop filter. This IC also includes a digitally-controlled programmable output divider and a precision analog differential amplifier. The output divider enables the device to control the output frequency of the clock signal, while the amplifier provides amplification of the output signal.

The 2308B-2DCG is a fully integrated solution for clock synthesis, jitter reduction, and frequency-varied output. It utilizes a robust and proven PLL controller and provides integrated jitter attenuators and low-power VCOs. The IC also includes a selectable low-power mode, which conserves power when the device is not needed. Furthermore, the IC is capable of processing multiple frequencies and can generate clock signals with a wide range of different frequencies.

The 2308B-2DCG offers a very low-jitter output signal, which is highly-suitable for clock and data-signal generation and synchronization. Its low-power design helps conserve battery power and its advanced features make it ideal for use in complex network and telecommunications applications, especially one involving PLL technologies.

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