LFOCXO081528B

Overview

The LFOCXO081528B is a 10 MHz Oven-Controlled Crystal Oscillator (OCXO) manufactured by IQD Frequency Products. It utilizes HCMOS output logic and operates within a supply voltage range of 4.75 V to 5.25 V. The device features a nominal frequency stability of ±0.005 ppm over the full operating temperature range of -40 °C to +85 °C. Aging performance is specified at ±0.002 ppm per year. The component is housed in a surface-mount package with dimensions of 32.0 mm x 25.0 mm x 12.6 mm, designed for high-reliability timing applications requiring exceptional frequency precision.

Feature Summary

• High-stability oven-controlled crystal oscillator architecture ensuring minimal frequency drift
• HCMOS digital output interface compatible with standard logic circuits
• Extended industrial temperature range operation from -40 °C to +85 °C
• Ultra-low aging rate specification for long-term frequency accuracy

Applications

• Global Positioning System (GPS) disciplined oscillators
• Telecommunications base station synchronization
• Precision test and measurement equipment
• Navigation systems requiring stable reference clocks

Procurement Notes

Verify that the required supply voltage matches the 5V specification, as this model is not compatible with 3.3V systems. Confirm that the PCB footprint accommodates the 32.0mm x 25.0mm package size and thermal requirements. Ensure design-in supports the necessary power dissipation for oven control. Check lead times with authorized distributors as OCXOs may have longer availability periods than standard crystals.

Selection Notes

Select this component when sub-ppb frequency stability is critical and environmental temperature variations are significant. It is suitable for designs where standard TCXOs or MEMS oscillators cannot meet strict phase noise or aging requirements. Consider the larger physical footprint and higher power consumption compared to smaller oscillators. Verify that the system can provide the required 5V supply rail efficiently.

Part Context

This part belongs to the LFOCXO series of oven-controlled crystal oscillators from IQD Frequency Products. The series is designed for applications demanding the highest levels of frequency stability and low phase noise. These components utilize specialized oven technology to maintain the crystal at a constant temperature, isolating it from ambient fluctuations. They are commonly used in aerospace, defense, and high-end industrial sectors.

Replacement Considerations

Direct replacements must match the 10 MHz frequency, 5V supply, and HCMOS output. Alternative OCXOs from other manufacturers should be evaluated based on pinout compatibility, thermal characteristics, and stability specifications. Verify that any substitute meets the same -40°C to +85°C operating range and aging requirements.