SIT3372AI-4B3-33NE148.500000

Oscillators Overview

The SiTime SIT3372AI-4B3-33NE148.500000 is a differential MEMS Voltage Controlled Crystal Oscillator (VCXO) operating at a nominal frequency of 148.5 MHz. It utilizes Elite Platform technology to deliver ultra-low jitter performance with a typical value of 0.21 ps. The device supports an absolute pull range (APR) of ±50 ppm and maintains a frequency stability of ±50 ppm over the specified temperature range. It operates on a 3.3V supply voltage and features HCSL output signaling. The component is housed in a compact 6-SMD, No Lead package measuring 3.2x2.5 mm, designed for surface mount applications.

Oscillators Feature Summary

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

Oscillators Applications

• Telecommunications systems requiring precise clock synchronization
• Networking equipment demanding low-jitter signal generation
• Industrial applications operating in noisy or harsh environments

Oscillators Procurement Notes

Verify the complete part number including suffixes to ensure correct output type, voltage, and pull range specifications. Confirm that the required frequency stability and operating temperature range align with system requirements. Check datasheet for reflow profile details and tape and reel dimensions to ensure compatibility with automated assembly processes. Validate that the HCSL output interface matches the receiving device inputs.

Oscillators Selection Notes

Select this component when ultra-low jitter and high dynamic performance are critical. The integrated regulators simplify design by removing external filtering components. Consider the ±50 ppm pull range for frequency tuning needs. Ensure the 3.3V supply voltage is compatible with the system architecture. The small footprint allows for dense PCB layouts in space-constrained designs.

Oscillators Part Context

This model belongs to the SiT3372 family of differential MEMS VCXOs from SiTime. The series offers programmability across various frequencies, voltages, and output types. Unlike traditional quartz oscillators, these devices eliminate long lead times and customization costs. The Elite Platform ensures consistent performance under environmental stressors such as EMI and power supply noise.

Oscillators Replacement Considerations

Direct substitutes require matching the 148.5 MHz frequency, HCSL output, 3.3V supply, and ±50 ppm stability. Verify package dimensions and pinout compatibility if replacing with other manufacturers' MEMS VCXOs. Cross-reference SiTime part numbers with similar suffixes for alternative frequencies or stability grades within the same platform.