SIT3372AC-4E9-25NG148.425787

Oscillators Overview

The SiTime SIT3372AC-4E9-25NG148.425787 is a differential MEMS Voltage-Controlled Crystal Oscillator (VCXO) operating at a nominal frequency of 148.425787 MHz. It features HCSL output signaling and operates within a supply voltage range of 2.5 V to 3.3 V, with a typical nominal voltage of 2.5 V as indicated by the '25' suffix in the part number structure for this series variant. The device provides a frequency stability of ±25 ppm over an extended industrial temperature range of -40°C to +85°C. Packaged in a compact 6-SMD, No Lead Exposed Pad form factor measuring 7.00 mm x 5.00 mm, it integrates on-chip regulators to filter power supply noise.

Oscillators Feature Summary

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

Oscillators Applications

• Telecommunications infrastructure requiring precise clocking
• High-speed networking equipment demanding low-jitter signals
• Industrial applications operating in noisy or thermally variable environments

Oscillators Procurement Notes

Verify the exact output format and voltage requirements against the specific datasheet revision, as SiTime part numbers encode configuration details. Confirm that the HCSL output interface matches the receiving component's input specifications. Ensure the operating temperature range meets the environmental constraints of the target application. Check for any specific reflow profile requirements during assembly to maintain device integrity.

Oscillators Selection Notes

Select this component when low jitter and high dynamic performance are critical in electrically noisy environments. The integrated regulation simplifies board design by removing external filtering components. Consider the factory-programmable nature if standard quartz alternatives have long lead times. Ensure the 148.425787 MHz frequency aligns with system timing requirements without additional multiplication or division.

Oscillators Part Context

This model belongs to the SiT3372 Elite Platform series, designed for ultra-low jitter differential VCXO applications. It represents a silicon-based alternative to traditional quartz oscillators, offering superior resilience to mechanical stress and thermal changes. The series supports a wide frequency range from 1 MHz to 220 MHz, enabling flexible clock generation solutions across various digital systems.

Oscillators Replacement Considerations

Direct replacements may include other SiTime VCXOs with matching frequency and output format, such as variants from the SiT3372 family with different stability or voltage ratings. Cross-comparison with quartz VCXOs requires careful evaluation of jitter performance and pull range capabilities to ensure functional equivalence in the specific circuit topology.

Oscillators FAQ

Does the SIT3372AC-4E9-25NG148.425787 require an external LDO?

No, the device integrates multiple on-chip regulators to filter power supply noise, which eliminates the need for a dedicated external Low-Dropout Regulator (LDO).

What technology enables the SiT3372's resistance to shock and vibration?

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