SIT3373AC-2E2-25NU445.500000

Oscillators Overview

The SiTime SIT3373AC-2E2-25NU445.500000 is a MEMS voltage-controlled oscillator (VCXO) operating at 445.5 MHz with LVDS output signaling. It functions within a supply voltage range of 2.25 V to 2.75 V and maintains a frequency stability of ±50 ppm across an industrial temperature range of -20°C to +70°C. The device utilizes a 6-SMD, no-lead exposed pad package measuring 7 mm x 5 mm. This component integrates on-chip regulators to filter power supply noise, eliminating the need for external LDOs, and supports programmable absolute pull ranges up to ±3145 ppm.

Oscillators Feature Summary

• Integrates multiple on-chip regulators to filter power supply noise without requiring dedicated external low-dropout regulators
• Delivers exceptional dynamic performance resistant to airflow, thermal gradients, shock, vibration, and electromagnetic interference
• Offers factory-programmable 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 with varying thermal conditions

Oscillators Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm electrical parameters such as output format, stability, and voltage. Ensure the package type matches the design requirements. Confirm RoHS compliance status through the latest product documentation. Check availability constraints and lead times directly with authorized distributors. Validate that the programmed specifications align with the system's timing and environmental needs before finalizing procurement.

Oscillators Selection Notes

Select this VCXO when high linearity and resistance to mechanical stress are critical. The integrated noise filtering simplifies board layout by removing external regulator components. Consider the programmability for optimizing clock configurations without custom quartz manufacturing costs. Evaluate the LVDS output compatibility with downstream logic interfaces. Assess the ±50 ppm stability requirement against system jitter budgets.

Oscillators Part Context

The SiT3373 series represents SiTime's ultra-low jitter differential MEMS VCXOs designed for frequencies from 220 MHz to 725 MHz. Utilizing DualMEMS temperature sensing and TurboCompensation technology, these devices provide superior phase noise and dynamic performance compared to traditional quartz oscillators. The family supports various output formats including LVPECL, LVDS, and HCSL, catering to diverse telecom and networking standards.

Oscillators Replacement Considerations

Direct substitutes include other SiT3373 variants with matching 445.5 MHz frequency and LVDS output, such as SIT3373AC-2E3-25NU445.500000. Verify pin-out compatibility and thermal characteristics when cross-referencing with competitor MEMS VCXOs. Ensure equivalent pull range and stability specifications are met.