OJ-EMELM

Overview

The OJ-EMELM is a programmable crystal oscillator (XO) manufactured by Taitien, designed for high-frequency clock generation in digital systems. It operates within a frequency range of 15 MHz to 2100 MHz and utilizes CML output signaling for high-speed data transmission. The device supports a supply voltage of 3.3V with integrated enable/disable functionality for power management. It is housed in a compact 4-SMD, No Lead package, measuring 3.2 x 2.5 mm, suitable for space-constrained PCB layouts.

Feature Summary

• Supports wide frequency programming from 15 MHz to 2100 MHz
• Features CML output interface for high-speed signal integrity
• Includes hardware enable/disable control for power optimization
• Utilizes low-profile surface mount packaging for dense assembly

Applications

• High-speed serial communication interfaces
• Network infrastructure equipment clocking
• Consumer electronics requiring precise timing sources
• Industrial control systems with programmable clock needs

Procurement Notes

Verify the specific frequency configuration and output load requirements against your system design before ordering. Confirm that the 3.3V supply rail matches the component's electrical specifications. Ensure the PCB footprint aligns with the 4-SMD No Lead package dimensions provided in the official datasheet. Request the latest revision documentation to confirm pinout compatibility and enable logic levels.

Selection Notes

Select this model when a programmable clock source is required within the 15 MHz to 2100 MHz range. Choose the CML output variant if interfacing with high-speed receivers compatible with current-mode logic. Consider the 3.3V supply option for standard logic level compatibility. Evaluate the enable/disable feature if dynamic power management is critical for the application's energy efficiency targets.

Part Context

The OJ-EMELM belongs to Taitien's FASTXO series of programmable oscillators, which offer flexible frequency options in small form factors. This series is engineered to replace fixed-frequency crystals in designs requiring multiple clock speeds or future-proofing. The EMELM suffix denotes the specific voltage and package configuration within the broader OJ-M product family.

Replacement Considerations

Direct substitutes may include other models from the OJ-M series with compatible voltage and package types. Verify frequency range overlap and output signal type (CML) before swapping. Cross-reference pinouts and enable logic to ensure functional equivalence without circuit redesign.