SIT3373AC-4E2-33NH491.520000

Oscillators Overview

The SIT3373AC-4E2-33NH491.520000 is a differential MEMS voltage-controlled oscillator (VCXO) operating at a nominal frequency of 491.52 MHz. It utilizes HCSL output signaling with a 3.3V supply and features a 6-pin SMD package with an exposed pad. The device incorporates DualMEMS temperature sensing and TurboCompensation technology for dynamic performance resilience against thermal gradients, shock, and vibration. Integrated on-chip regulators filter power supply noise, removing the need for external LDOs.

Oscillators Feature Summary

• DualMEMS temperature sensing and TurboCompensation technology provide resistance to airflow, thermal gradients, shock, and vibration.
• Integrated on-chip regulators filter power supply noise, eliminating the requirement for dedicated external low-dropout regulators.
• Factory programmable for specific combinations of frequency, stability, voltage, output signaling, and pull range.

Oscillators Applications

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

Oscillators Procurement Notes

Verify the complete part number including the suffix NH491.520000 to ensure correct frequency and package configuration. Confirm RoHS compliance status through official manufacturer documentation. Check datasheet specifications for reflow profile requirements during surface mount assembly processes.

Oscillators Selection Notes

Select this component when a high-frequency VCXO with HCSL outputs is required. Ensure the application benefits from integrated power regulation and MEMS-based robustness against environmental stressors compared to traditional quartz alternatives.

Oscillators Part Context

This model belongs to the SiT3373 family of ultra-low jitter differential MEMS VCXOs. The series supports frequencies from 220 MHz to 725 MHz and offers multiple output types including LVPECL, LVDS, and HCSL. It is designed for applications needing factory-programmable flexibility and exceptional dynamic performance.

Oscillators Replacement Considerations

Direct substitutes are not explicitly listed in public documentation. Evaluate other SiT3373 variants with matching frequency and output type. Cross-reference pinouts and electrical characteristics before replacing quartz oscillators.

Oscillators FAQ

Does the SIT3373AC-4E2-33NH491.520000 require an external LDO?

No, the device integrates multiple on-chip regulators to filter power supply noise, eliminating the need for a dedicated external LDO.

What technology ensures dynamic performance against environmental stress?

The device uses SiTime’s unique DualMEMS temperature sensing and TurboCompensation technology to resist airflow, thermal gradients, shock, and vibration.