SIT3373AC-1B3-33NH491.520000

Oscillators Overview

The SiTime SIT3373AC-1B3-33NH491.520000 is a differential MEMS voltage-controlled oscillator (VCXO) operating at 491.52 MHz with LVPECL output signaling. It functions within a 3.3V supply and features ±50 ppm frequency stability across an industrial temperature range of -20°C to +70°C. The device utilizes DualMEMS technology for thermal compensation, offering resistance to shock, vibration, and EMI while integrating on-chip regulators to filter power supply noise.

Oscillators Feature Summary

• Integrates multiple on-chip regulators to filter power supply noise, eliminating the need for dedicated external LDOs
• Delivers exceptional dynamic performance through resistance to airflow, thermal gradients, shock, and vibration
• Utilizes unique DualMEMS temperature sensing and TurboCompensation technology for superior phase noise

Oscillators Applications

• Telecommunications systems requiring low-jitter clock signals
• Networking infrastructure equipment
• Industrial applications operating in noisy environments

Oscillators Procurement Notes

Verify that the specific ordering suffix matches the required output signaling type, as different variants exist for LVDS or HCSL outputs. Confirm the package dimensions and reflow profile requirements against your PCB assembly specifications. Ensure the selected part number corresponds to the correct frequency and stability parameters for your design. Cross-reference the datasheet for proper handling and storage conditions.

Oscillators Selection Notes

Select this component when designing for high-reliability timing applications in harsh environments where quartz oscillators may fail due to mechanical stress. The integrated noise filtering simplifies board layout by reducing the need for external components. Consider the programmable nature of the SiT3373 platform if future design iterations require different frequencies or pull ranges without changing the physical footprint.

Oscillators Part Context

This part belongs to the SiT3373 Elite Platform series, which covers a wide frequency range from 220 MHz to 725 MHz. The series is engineered specifically for low-jitter differential applications. It represents SiTime's solution for replacing custom-built quartz devices, offering factory-programmable flexibility for frequency, stability, and voltage configurations.

Oscillators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult official cross-reference tools or manufacturer guidelines for direct replacements.