SIT3372AI-1B9-33NB148.425787

Oscillators Overview

The SiTime SIT3372AI-1B9-33NB148.425787 is a differential MEMS Voltage-Controlled Crystal Oscillator (VCXO) operating at a nominal frequency of 148.425787 MHz. It utilizes LVPECL output signaling and functions with a 3.3V supply voltage. The device features an absolute pull range of ±60ppm and a frequency stability of ±35ppm. It is housed in a 6-SMD, No Lead package and supports an operating temperature range from -40°C to +85°C.

Oscillators Feature Summary

• Integrates DualMEMS temperature sensing and TurboCompensation technology for resistance to thermal gradients, shock, and vibration.
• Includes on-chip regulators to filter power supply noise, removing the need for external LDOs.
• Factory programmed for specific frequency, stability, voltage, and pull range configurations.

Oscillators Applications

• Telecommunications systems requiring low-jitter clock signals
• Networking equipment demanding precise frequency control
• Industrial applications operating in noisy or dynamic environments

Oscillators Procurement Notes

Verify the exact part number against official SiTime documentation to ensure compatibility with system requirements. Confirm that the LVPECL output type and 3.3V supply voltage match the design specifications. Check the absolute pull range and stability parameters against application needs. Ensure the 6-SMD package footprint aligns with PCB layout constraints. Validate the operating temperature range for environmental suitability.

Oscillators Selection Notes

Select this component when low jitter and high dynamic performance are critical. The integrated MEMS technology offers superior resistance to mechanical stress compared to quartz alternatives. Factory programmability allows for optimized clock configurations without custom manufacturing delays. Consider the specific pull range and stability requirements to ensure the VCXO meets system timing accuracy standards.

Oscillators Part Context

The SiT3372 family consists of differential MEMS VCXOs designed for 1 MHz to 220 MHz applications. This specific model represents a factory-programmed variant with fixed frequency and electrical parameters. It belongs to a series engineered for telecom and networking sectors where reliability and low phase noise are essential.

Oscillators Replacement Considerations

Substitute parts must match the 148.425787 MHz frequency, LVPECL output, and 3.3V supply. Verify package compatibility and thermal performance. Cross-reference with other SiT3372 variants for similar specifications if exact matches are unavailable.

Oscillators FAQ

Does the SIT3372AI 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 provides the device's dynamic performance?

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