SI501-PROG-BAXR

Overview

The SI501-PROG-BAXR is a CMEMS programmable oscillator from Silicon Labs, housed in a 4-SMD, No Lead package measuring 3.2 x 5.0 mm. It operates on a supply voltage range of +1.71 V to +3.63 V and features an LVCMOS output interface. The device supports a frequency range of 32 kHz to 100 MHz with Tri-State (Output Enable) functionality. It utilizes CMEMS technology for excellent short-term stability and long-term aging performance. The component is RoHS compliant and Pb-free, designed for industrial applications with extended temperature options.

Feature Summary

• Utilizes CMEMS technology for superior clock stability
• Supports glitchless start and stop operations
• Features user-selectable rise and fall time options
• Includes Tri-State output enable functionality

Applications

• General purpose clock generation in embedded systems
• Timing solutions for IoT devices
• Clock tree distribution in consumer electronics
• Industrial control system timing references

Procurement Notes

Verify the specific programming requirements before ordering, as this model requires user programming via Digi-Key web order notes for the desired frequency. Confirm that the 3.2x5 mm footprint matches the target PCB design. Ensure the supply voltage range of 1.71V to 3.63V aligns with the system power rails. Check if the Tri-State enable function is necessary for the application logic. Validate compliance with RoHS and Pb-free standards for the manufacturing process.

Selection Notes

Select this component when a small form factor is required alongside precise timing needs. The CMEMS technology offers advantages over traditional quartz crystals in terms of shock resistance and startup time. Consider the LVCMOS output compatibility with downstream logic levels. The wide supply voltage range provides flexibility in power management designs. Evaluate the need for output enable capabilities to manage bus contention or power saving modes.

Part Context

This part belongs to the Si50x family of CMEMS programmable oscillators, which includes variants like Si501, Si502, and Si503. The Si501 variant specifically supports single frequency operation with an output enable pin. The family shares common features such as low period jitter and low power consumption. Other members may offer dual or quad frequency options or in-circuit programmability like the Si504.

Replacement Considerations

Direct substitutes within the same package and specification include other Si501 series parts with different stability or voltage ratings. Cross-reference with Si502 or Si503 models if multiple frequencies are needed. Verify that any replacement maintains the 3.2x5 mm footprint and LVCMOS output type. Ensure the new part supports the required operating temperature range.