SIT3821AI-1C2-XXXX000.FP0000X

Overview

The SiTime SIT3821AI-1C2-XXXX000.FP0000X is a programmable MEMS VCXO oscillator operating within the 1 MHz to 220 MHz frequency range. It features a frequency stability of ±25 ppm and supports LVPECL output format. The device operates on a supply voltage between 2.5 V and 3.3 V, with a maximum current rating of 61 mA. It utilizes a 6-SMD, no lead package measuring 5 mm in length, 3.2 mm in width, and 0.75 mm in height. The component is rated for an operating temperature range from -40 °C to +85 °C.

Feature Summary

• Programmable MEMS-based Voltage Controlled Crystal Oscillator (VCXO) architecture
• LVPECL differential output interface for high-speed signal integrity
• Supports enable/disable and standby control functions via supply pins

Applications

• High-performance communication systems requiring precise clocking
• Data acquisition equipment needing stable frequency references
• Test and measurement instruments demanding low phase noise

Procurement Notes

Verify the specific frequency configuration required for your application, as this part number represents a blank programming template. Confirm that the LVPECL output format aligns with your receiver's input requirements. Ensure the 2.5 V to 3.3 V supply voltage range matches your system power rails. Check the 6-SMD package dimensions against your PCB footprint constraints. Validate the -40 °C to +85 °C industrial temperature range suitability for your operational environment.

Selection Notes

Select this component when a programmable VCXO with LVPECL outputs is necessary. Consider the ±25 ppm stability specification for applications tolerant of minor frequency variations. Evaluate the 1 MHz to 220 MHz range against your target clock frequencies. Assess the 61 mA current consumption against your power budget. Compare the 5x3.2 mm package size with available board space alternatives.

Part Context

This model belongs to the SiT3821 series of programmable oscillators manufactured by SiTime. It is part of a family of MEMS-based timing solutions designed to replace traditional quartz crystals. The series offers flexibility through programmability while maintaining robust performance characteristics suitable for industrial and commercial electronics.

Replacement Considerations

Direct substitutes include other SiTime programmable VCXOs with similar LVPECL outputs and frequency ranges, such as the SIT3822 series for higher frequencies. Verify pin compatibility and electrical specifications before cross-referencing with competitors' offerings.