501JBL-ABAG

Overview

The Si501JBL-ABAG is a precision MEMS oscillator manufactured by Silicon Labs, designed for high-performance timing applications requiring low phase noise and jitter. This specific model operates at a frequency of 245.76 MHz with an output tolerance of ±50 ppm. It utilizes the Si501 family architecture, which integrates a voltage-controlled crystal oscillator (VCXO) core with digital calibration to ensure stability across varying environmental conditions. The device supports LVCMOS output levels and is housed in a compact 3225 package, making it suitable for space-constrained designs.

Feature Summary

• Integrated VCXO functionality for precise frequency tuning
• Digital calibration technology ensures long-term stability
• Low phase noise performance optimized for data communication
• Compact surface-mount package design

Applications

• High-speed serial transceivers
• Data center networking equipment
• Telecommunications infrastructure
• Test and measurement instruments

Procurement Notes

Verify the exact part number suffix against the manufacturer's current datasheet to confirm pinout compatibility and output voltage levels. Ensure that the operating temperature range specified in the procurement requirements matches the component's rated specifications. Cross-reference the orderable part number with the official Silicon Labs catalog to avoid discrepancies in packaging or revision history before finalizing purchase orders.

Selection Notes

Select this component when precise frequency control and low jitter are critical for signal integrity in high-speed digital interfaces. Consider the required output swing and load capacitance to ensure compatibility with the target circuit. Evaluate the need for VCXO capabilities if frequency modulation or tuning is required within the system design constraints.

Part Context

This oscillator belongs to the Si501 series, which represents Silicon Labs' advanced MEMS-based timing solutions. The series is known for replacing traditional quartz crystals with more robust and scalable alternatives. The Si501JBL variant specifically targets applications demanding stable clock signals with minimal phase error, leveraging proprietary MEMS technology for enhanced reliability compared to conventional oscillators.

Replacement Considerations

Consult the official Silicon Labs replacement guide for direct equivalents. Verify pin-to-pin compatibility and electrical parameter alignment with any substitute components. Ensure that alternative parts meet the same frequency tolerance and phase noise requirements to maintain system performance.