SI4123-D-GTR

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The SI4123-D-GTR is a clock generator, designed to offer ultra-low jitter in low-power, high-speed applications. It is specifically designed for networking and broadcast applications, but is also used for clock distribution and data conversion.

The SI4123-D-GTR clock generator uses a single-ended crystal oscillator, synchronized to the clock source. The output frequency is user-programmable, with a range of 100 Hz to 5.5GHz. It also features an integrated PLL, allowing the user to select an output clock with low-phase noise and low jitter, while achieving fast lock times with low-power operation.

The working principle of the SI4123-D-GTR is straightforward. When the input frequency is applied to the oscillator, it uses a PI filter to remove phase jitter and then synthesizes the output clock phase and frequency. The output phase is demodulated and then modulated back to the desired frequency and phase. This modulation can be used to achieve a wide range of frequency and phase locking capability, from 20Hz up to 5.5GHz.

The SI4123-D-GTR can also accept multiple, simultaneous inputs from the same or different sources. This allows the user to choose which input to use for the reference frequency, allowing for multiple sources of input. The output is generated by a modulator, allowing for up to four different clock signals at the output.

The SI4123-D-GTR also features an integrated loop filter, allowing the user to reduce system power by dynamically controlling the output frequency, while ensuring stable operation and low-jitter performance. Additionally, the integrated loop filter improves the system response by reducing noise and improving signal-to-noise ratio.

The SI4123-D-GTR is an excellent choice for applications that require ultra-low jitter with low power consumption. Its integrated PLL and loop filter allow for flexible frequency generation and excellent jitter performance. With its range of frequencies, it is suitable for a wide range of applications from networking to broadcast.

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