Microchip DSC1123CI2-0000: A 200 MHz Low-Jitter LVDS Oscillator

In the realm of high-speed digital systems, the integrity of the clock signal is paramount. As data rates continue to escalate, the demand for precise, stable, and clean clock sources becomes increasingly critical. The Microchip DSC1123CI2-0000 stands out as a premier solution, engineered to meet the rigorous timing requirements of modern applications with its 200 MHz Low-Jitter LVDS output.

This oscillator belongs to Microchip's family of Discera® Silicon Oscillators, which are known for their reliability and performance. Unlike traditional crystal oscillators (XO), the DSC1123CI2-0000 is built on a pure CMOS silicon process, eliminating the need for a mechanical quartz crystal. This fundamental difference grants it superior resilience against environmental stressors such as shock, vibration, and electromagnetic interference (EMI), making it an ideal choice for demanding industrial, automotive, and communications environments.

The core of its performance lies in its exceptionally low jitter specification. Jitter—the deviation from true periodicity of a clock signal—can cause significant errors in data transmission and processing. The DSC1123CI2-0000 is designed to minimize phase jitter to ultra-low levels, typically measured in the range of a few hundred femtoseconds (fs). This ensures a remarkably clean and stable 200 MHz signal, which is crucial for maintaining signal integrity in high-speed serial interfaces like PCIe, SATA, and 10G/40G/100G Ethernet, as well as in high-performance data converters and FPGAs.

The use of Low-Voltage Differential Signaling (LVDS) is another key advantage. LVDS offers a robust, low-power, and low-noise method for transmitting high-speed signals over controlled impedance traces. The differential nature of LVDS provides superior common-mode noise rejection, further enhancing signal integrity and making the clock signal less susceptible to noise from the system board. The DSC1123CI2-0000 provides a compliant LVDS output, ensuring seamless integration into a wide array of high-speed designs.

Furthermore, the device boasts a fast start-up time and excellent frequency stability over temperature and voltage variations. Its small-form-factor, 6-pin ceramic package (2.5mm x 2.0mm) saves valuable board space, which is a constant premium in today's compact and complex electronic assemblies.

ICGOODFIND: The Microchip DSC1123CI2-0000 is a high-performance, highly reliable oscillator that delivers a pristine 200 MHz clock. Its combination of ultra-low jitter, robust LVDS output, and resilience makes it an superior choice for designers who will not compromise on timing performance in their high-speed applications.

Keywords: Low-Jitter, LVDS Oscillator, 200 MHz, Phase Noise, Signal Integrity