SIT3907AC-22-33NX-22.579200T

Oscillators Overview

The SiTime SIT3907AC-22-33NX-22.579200T is a MEMS-based Digitally Controlled Crystal Oscillator (DCXO) operating at a nominal frequency of 22.5792 MHz. It features LVCMOS and LVTTL output formats compatible with standard logic levels. The device operates within a supply voltage range of 2.25 V to 2.75 V, with a typical operating voltage of 2.5 V. Frequency stability is specified at 25 ppm, and the load capacitance is 15 pF. The unit utilizes a 4-pin QFN surface-mount package with no lead construction, measuring approximately 2 mm by 2 mm. It supports an operating temperature range from -40°C to +85°C.

Oscillators Feature Summary

• Digitally controlled MEMS oscillator architecture providing high precision timing
• LVCMOS and LVTTL output compatibility for direct interface with digital systems
• High stability performance suitable for demanding communication applications

Oscillators Applications

• Telecommunications equipment requiring precise clock synchronization
• Industrial control systems needing stable timing references
• Automotive electronics utilizing MEMS oscillators for reliability

Oscillators Procurement Notes

Verify the specific suffix codes against the manufacturer datasheet to ensure exact pinout and electrical characteristics match the design requirements. Confirm that the 4-pin QFN package dimensions align with the PCB footprint. Check for any recent product change notices regarding packaging or material composition updates before finalizing procurement orders.

Oscillators Selection Notes

Select this component when a digitally tunable oscillator with LVCMOS/LVTTL outputs is required at 22.5792 MHz. Ensure the system power supply remains within the 2.25 V to 2.75 V range to maintain specified frequency stability. Consider the 25 ppm stability specification against application jitter tolerance requirements. Verify that the 15 pF load capacitance matches the circuit design parameters.

Oscillators Part Context

This part belongs to the SiT3907 series of MEMS DCXOs from SiTime. These devices replace traditional quartz crystals with silicon MEMS technology, offering improved shock resistance and lower sensitivity to environmental factors. The series provides configurable solutions for various frequencies and output types, supporting supply chain simplification and enhanced reliability in modern electronic designs.

Oscillators Replacement Considerations

Direct replacements must be verified through official cross-reference tools. Generic MEMS oscillators may not match the specific digital control interface or stability specifications. Ensure any substitute maintains the same 22.5792 MHz frequency and LVCMOS/LVTTL output compatibility.