SI5340D-A-GMR

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The SI5340D-A-GMR is a high-performance, low-jitter programmable clock generator IC that is a cost-effective solution for designers who need multiple clocks of different frequencies in their system. It is part of Silicon Laboratories\' line of high-performance clock generator products, providing a wide frequency range, fast programming times and superior jitter performance. The SI5340D-A-GMR is ideal for applications such as servers, routers, security appliances, enterprise-class switches and 3G/4G infrastructure equipment.

The SI5340D-A-GMR supports up to 8 output clocks, which can be programmed over a wide frequency range from 40kHz to 200MHz. It allows for fractional-N PLL or integer-N PLL operation, making it suitable for applications requiring tight jitter performance and lowest phase noise. A voltage-controlled crystal oscillator (VCXO) can be used to fine-tune the output frequency when higher frequency accuracy or tight jitter requirements are needed for timing. The device also incorporates a programmable spread-spectrum clock generator, as well as a jitter attenuator, making it suitable for applications that require jitter-tolerant clock signals and immunity to power-supply and environmental noise.

The working principle of the SI5340D-A-GMR is based on an integrated-clock-generator architecture, where the device generates an internal reference clock and multiplies it up to a higher frequency clock using a phase-locked loop (PLL). The output clock’s frequency is determined by the programmable parameters in the PLL, such as the feedback divider and the loop bandwidth. The output clock phase can be adjusted by controlling the phase delay or phase shift of the internal reference clock. The device provides multiple ways to program the phase delay and the output frequency from on-chip registers or from the device’s interface pin.

The SI5340D-A-GMR is designed to offer superior jitter performance, as well as superior frequency accuracy and stability for high-frequency applications. It offers fast programming times, making it suitable for applications which require rapid frequency changes. The device supports spread-spectrum clocking, making it ideal for applications that require jitter-tolerant clock signals and immunity to power-supply and environmental noise. The device also includes a jitter attenuator, making it suitable for applications which require very tight jitter performance.

In conclusion, the SI5340D-A-GMR is a high-performance, low-jitter programmable clock generator IC that is a cost-effective solution for designers who need multiple clocks of different frequencies in their system. It enables fractional-N PLL or integer-N PLL operation, offering superior jitter performance, fast programming times and superior frequency accuracy and stability. The device also includes a spread-spectrum clock generator and jitter attenuator, making it an optimal choice for applications that require jitter-tolerant clock signals and noise immunity. The excellent combination of features makes the SI5340D-A-GMR an excellent choice for applications such as servers, routers, security appliances, enterprise-class switches and 3G/4G infrastructure equipment.

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