SIT3373AC-2E3-33NZ445.500000

Oscillators Overview

The SiTime SIT3373AC-2E3-33NZ445.500000 is a MEMS voltage-controlled oscillator (VCXO) operating at a nominal frequency of 445.5 MHz. It features LVDS output signaling and operates on a 3.3V supply voltage. The device provides a frequency stability of ±50 ppm across the commercial temperature range of -20°C to +70°C. It is housed in a 6-SMD, no-lead exposed pad package with dimensions of 7.0 mm x 5.0 mm. The component utilizes DualMEMS technology for enhanced dynamic performance against environmental stressors.

Oscillators Feature Summary

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

Oscillators Applications

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

Oscillators Procurement Notes

Verify the exact part number suffix against official SiTime documentation to confirm output type, voltage, and temperature grade. Ensure compatibility with reflow profiles specified in manufacturing notes. Confirm tape and reel specifications for automated assembly processes. Cross-reference datasheet parameters with system requirements before procurement.

Oscillators Selection Notes

Select this VCXO when low jitter and high linearity are critical for signal integrity. Consider the 445.5 MHz frequency and LVDS output for high-speed data transmission interfaces. Evaluate the ±50 ppm stability requirement against system timing budgets. Assess the 3.3V supply constraint and 7050 package footprint for PCB layout compatibility.

Oscillators Part Context

The SiT3373 series represents SiTime’s ultra-low jitter differential MEMS VCXOs designed for frequencies from 220 MHz to 725 MHz. This specific model falls within the higher frequency band, offering exceptional dynamic performance compared to traditional quartz oscillators. It supports various output types including LVPECL, LVDS, and HCSL, tailored for telecom and industrial networking.

Oscillators FAQ

Does the SIT3373AC 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 is the typical jitter performance of this VCXO?

The SiT3373 series delivers exceptional dynamic performance with a typical jitter of 0.21 ps.