SIT3372AI-4B9-28NC70.656000

Oscillators Overview

The SiTime SIT3372AI-4B9-28NC70.656000 is a MEMS Voltage-Controlled Crystal Oscillator (VCXO) operating at a nominal frequency of 70.656 MHz. It features HCSL output signaling and requires a 2.8V supply voltage. The device utilizes DualMEMS temperature sensing and TurboCompensation technology for dynamic performance. Key electrical parameters include a frequency stability of ±50 ppm and an absolute pull range of ±1000 ppm. It operates within a temperature range of -40°C to 85°C and is housed in a compact 6-SMD, No Lead package measuring 3.2mm x 2.5mm.

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, eliminating the need for external LDOs.
• Factory programmable for specific combinations of frequency, stability, voltage, and pull range.

Oscillators Applications

• Telecommunications equipment requiring precise clocking
• Networking infrastructure with noisy environments
• Industrial applications demanding dynamic performance

Oscillators Procurement Notes

Verify the exact output signaling type and supply voltage requirements against the system design before procurement. Confirm that the HCSL output level is compatible with the receiving component's input specifications. Ensure the PCB layout supports the 6-SMD package dimensions and reflow profile as specified in the manufacturing notes.

Oscillators Selection Notes

Select this component when low jitter and high immunity to environmental stressors are required. The factory programmability allows for optimization of clock configurations without custom quartz costs. Consider the ±1000 ppm pull range if frequency tuning is necessary within the application constraints.

Oscillators Part Context

This part belongs to the SiT3372 Elite Platform series, designed for ultra-low jitter differential VCXO applications. It represents a shift from traditional quartz oscillators by offering MEMS-based reliability and programmability across a wide frequency range of 1 MHz to 220 MHz.

Oscillators Replacement Considerations

Direct replacements must match the 70.656 MHz frequency, HCSL output, and 2.8V supply. Other SiT3372 variants with different suffixes may offer different voltages or outputs; verify pin compatibility and electrical specs before substitution.

Oscillators FAQ

Does the SIT3372AI-4B9-28NC70.656000 require an external LDO?

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

What technology provides the dynamic performance of this VCXO?

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