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Product Detailed Parameters
- Description：SIT3821 - FIELD PROGRAMMABLE OSC
- Series：*
- Mfr：SiTime
- Package：Bulk
- Base Resonator：-
- Type：-
- Programmable Type：-
- Available Frequency Range：-
- Function：-
- Output：-
- Voltage - Supply：-
- Frequency Stability：-
- Frequency Stability (Total)：-
- Operating Temperature：-
- Spread Spectrum Bandwidth：-
- Current - Supply (Max)：-
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：6-SMD, No Lead
- Size / Dimension：-
- Height - Seated (Max)：-
- Supplier Device Package：6-SMD (3.2x2.5)
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Overview
The SiTime SIT3821AI-1B2-XXXX000.FP0000X is a field-programmable MEMS VCXO oscillator from the SiT3821 series. It operates on 2.5V or 3.3V supplies and supports frequencies from 1MHz to 220MHz. The device features ±25ppm total frequency stability and is housed in a compact 6-SMD, No Lead package with dimensions of 3.2mm x 2.5mm x 0.8mm. This unprogrammed blank unit allows for custom configuration via TimeMaster software.
Feature Summary
- Field-programmable MEMS technology enabling customizable frequency generation
- Voltage-controlled operation suitable for phase noise and jitter optimization
- Compact surface-mount design optimized for high-density PCB layouts
Applications
- Telecommunications base stations requiring precise clock synchronization
- Industrial equipment needing stable timing references
- Consumer electronics utilizing programmable clock sources
Procurement Notes
Verify that the specific suffix matches the required output format and enable/disable functionality. Confirm that the unprogrammed blank status aligns with your internal programming infrastructure. Ensure compatibility with the TimeMaster software environment for final configuration before deployment in production systems.
Selection Notes
Select this component when design requirements demand programmability within a small footprint. The 1MHz to 220MHz range covers most standard digital interfaces. Verify voltage supply constraints against the 2.5V/3.3V specification. Consider the ±25ppm stability limit for system timing budgets.
Part Context
This part belongs to the SiT3821 family of silicon-based MEMS oscillators. It serves as a flexible alternative to traditional quartz solutions by offering reprogrammability. The AI suffix indicates specific performance characteristics within the broader product line.
Replacement Considerations
Direct replacements require matching the 6-SMD package and voltage range. Cross-reference other SiT3821 variants for different output types. Verify that substitute parts support the same frequency pulling capabilities if VCXO functionality is critical.
