SIT3372AI-1E9-30NE70.656000

Oscillators Overview

The SiTime SIT3372AI-1E9-30NE70.656000 is a differential MEMS voltage-controlled crystal oscillator (VCXO) operating at 70.656 MHz with LVPECL output signaling. It functions within a 3V supply and features ±35 ppm frequency stability over the -40°C to +85°C industrial temperature range. The device utilizes DualMEMS temperature sensing and TurboCompensation technology for dynamic performance against thermal gradients, shock, and vibration. Integrated on-chip regulators filter power supply noise, removing the need for external LDOs. Packaged in a 6-pin surface-mount no-lead format, it supports factory programming for specific frequency, voltage, and pull range configurations.

Oscillators Feature Summary

• Integrates DualMEMS temperature sensing and TurboCompensation technology to resist airflow, thermal gradients, shock, and vibration.
• Includes multiple on-chip regulators to filter power supply noise, eliminating the requirement for dedicated external low-dropout regulators.
• Factory programmable architecture allows optimization of frequency, stability, voltage, output signaling, and pull range without custom quartz manufacturing.

Oscillators Applications

• Telecommunications systems requiring precise clocking
• Networking equipment demanding low-jitter differential signals
• Industrial applications operating in noisy or thermally variable environments

Oscillators Procurement Notes

Verify the complete part number including suffixes such as -1E9-30NE to ensure correct voltage, output type, and stability specifications. Confirm that the required pull range matches the design constraints, as this parameter is factory-programmed. Check the datasheet for the specific reflow profile and tape and reel dimensions to ensure compatibility with automated assembly processes. Validate that the LVPECL output interface aligns with the receiving component's input requirements.

Oscillators Selection Notes

Select this component when low jitter and high dynamic stability are critical in electrically noisy or mechanically harsh environments. The integrated power regulation simplifies board layout by reducing external component count. Choose based on the specific frequency and pull range needed, as these are customized during manufacturing. Ensure the 3V supply voltage and LVPECL output levels match the system design. Consider the small form factor for space-constrained designs compared to traditional quartz alternatives.

Oscillators Part Context

The SIT3372 series represents SiTime’s ultra-low jitter differential VCXOs, covering frequencies from 1 MHz to 220 MHz. These devices replace traditional quartz oscillators by offering programmability and robustness against environmental stressors. The AI suffix indicates specific packaging or configuration variants within the broader SIT3372 family, designed for applications requiring precise voltage control and stable timing in demanding conditions.

Oscillators Replacement Considerations

Direct replacements require matching the 70.656 MHz frequency, LVPECL output, 3V supply, and ±35 ppm stability. Verify that any substitute supports the same pull range and operates within the -40°C to +85°C temperature range. Ensure the replacement package is compatible with the 6-pin SMD footprint. Cross-reference specific suffix codes to confirm identical electrical and mechanical characteristics.

Oscillators FAQ

Does the SIT3372AI require an external LDO for power regulation?

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

What technology provides the SIT3372AI's resistance to thermal gradients and vibration?

The device utilizes SiTime’s unique DualMEMS temperature sensing and TurboCompensation technology to deliver exceptional dynamic performance against airflow, thermal gradients, shock, and vibration.