I747-2P3-20.000 MHZ

Oscillators Overview

The I747-2P3-20.000 MHZ is a surface-mount temperature-compensated voltage-controlled crystal oscillator (TCVCXO) manufactured by ILSI America. It operates at a nominal frequency of 20 MHz and utilizes a clipped sine wave output level with a minimum amplitude of 0.8 V p-p. The device features a ceramic package measuring 2.5 mm x 3.2 mm. It supports a supply voltage range typically centered around 3.3 VDC, with a maximum current consumption of 2 mA. Frequency stability is specified at ±2 ppm over the operating temperature range, with an aging rate of ±1 ppm per year maximum.

Oscillators Feature Summary

• Low jitter performance utilizing non-PLL based architecture
• Voltage-controlled frequency adjustment capability
• Compatible with lead-free processing standards

Oscillators Applications

• Fibre Channel server and storage systems
• Sonet/SDH network infrastructure
• T1/E1 and T3/E3 system clocking

Oscillators Procurement Notes

Verify the specific operating temperature code suffix against project requirements to ensure environmental compatibility. Confirm that the control voltage slope and polarity match the design specifications for frequency tuning. Ensure the PCB footprint aligns with the 2.5 mm x 3.2 mm ceramic package dimensions. Validate supply voltage tolerances to prevent excessive current draw or instability during operation.

Oscillators Selection Notes

Select this component when precise frequency control via voltage is required within a compact surface-mount form factor. Consider the clipped sine wave output interface for compatibility with downstream buffer amplifiers or differential drivers. Evaluate the thermal environment to ensure the selected temperature grade meets operational limits. Compare jitter specifications against system timing budget requirements for high-speed data applications.

Oscillators Part Context

This part belongs to the ILSI I747 series of TCVCXOs, designed for applications requiring stable, tunable clock signals in space-constrained environments. The series offers various package sizes and output types, with the I747 specifically providing a small 2.5 mm x 3.2 mm ceramic footprint. It complements other ILSI oscillators like the I737 and I534 series by offering voltage control capabilities alongside temperature compensation.

Oscillators Replacement Considerations

Potential substitutes include other ILSI TCVCXOs from the I747 family with matching frequency and package dimensions, such as I747-2J1-20.000, provided the temperature code and control voltage characteristics are compatible. Cross-reference with I737 series devices if package size flexibility allows.