23S05-1HDCG

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Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers

The 23S05-1HDCG is a clock generator based on a phase locked loop (PLL), that provides the generation of precise clock signals. This clock generator can produce very precise signals of different frequencies and is specially useful for high performance systems that require precise timing. Let’s dive in and learn more about the 23S05-1HDCG and its application field, as well as its working principle.

The 23S05-1HDCG has a wide range of applications in fields such as aerospace and defense, broadcast, industrial automation, medical, telecommunications, test and measurement and more. It is especially useful when precise timing is needed, such as in clocking multiple high performance microprocessors, communications system and high speed memory systems. The 23S05-1HDCG can also be used for low noise blanking applications, such as those found in broadcast applications.

The 23S05-1HDCG also offers different outputs and options, such as Power Over Ethernet (PoE), Ethernet (RJ45), Oscillator / Clock output and Synchronous Ethernet. Two models are available; one with a built-in oscillator and one with an external oscillator. The external oscillator model offers an optional low jitter clock input, that is selectable between 1Hz and 113.6MHz. In addition, the 23S05-1HDCG incorporates two synchronizing outputs that can be used to synchronize satellite clock sources and to synchronize to a Grandmaster Clock.

The 23S05-1HDCG works by having two signal paths that are locked to each other, through a process called phase-locking. The signal being processed by the PLL is called the reference signal and the signal that is generated by the PLL is called the output signal. The PLL determines the relationship between the reference signal and the output signal and makes them both the same frequency. Essentially the PLL is a frequency multiplier, and the frequency at which the output signal varies is based on the reference signal.

The 23S05-1HDCG contains all the necessary controlling logic to synchronize its output frequency with a reference clock frequency. The logic circuitry consists of a phase detector, a voltage controlled oscillator, a digitally controlled oscillator, a frequency divider and a phase/frequency synthesizer. The phase detector detects any differences in phase or frequency between the reference signal and the output signal and provides a control signal to the voltage controlled oscillator. The voltage controlled oscillator generates an output signal at a frequency based on the control signal received from the phase detector and the frequency divider reduces the output frequency.

The frequency synthesizer is responsible for generating the output signal. It takes the frequency generated by the voltage controlled oscillator and divides it down to the desired output frequency. Finally, the phase/frequency synthesizer sums the two signals and generates the precise output signal. The 23S05-1HDCG provides a precise and reliable clock signal, which is ideal for high performance systems that require precise timing.

The 23S05-1HDCG is an ideal source for clocking complex high performance systems, where precise timing is of the utmost importance. With multiple outputs available, it can be used for a variety of applications and for synchronization with satellite clock sources. Its built-in phase locked loop and frequency synthesizing logic provides a reliable and accurate output signal, making it the perfect choice for systems that require precise timing and synchronization.

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