VG7050ECN SM20T007-CJGLPFB

Overview

The VG7050ECN SM20T007-CJGLPFB is a programmable voltage-controlled crystal oscillator (VCXO) manufactured by Epson. It operates on a 2.5V or 3.3V supply and features an LVPECL output interface. The device supports a frequency range of 50 MHz to 800 MHz with micro-tuning capabilities and 2 ppb resolution. Key electrical parameters include a phase jitter of less than 0.3 ps rms (12 kHz to 20 MHz), current consumption under 90 mA, and four user-selectable preset frequencies via two pins. Frequency reprogramming is achieved through an I²C bus using a 7-bit address. The component utilizes a fundamental crystal resonator for reliable operation across a temperature range of -40°C to +85°C.

Feature Summary

• Supports programmable frequency tuning within the 50 MHz to 800 MHz range with high resolution.
• Integrates low jitter PLL technology for stable signal generation in high-speed applications.
• Allows configuration of four preset startup frequencies selectable via dedicated control pins.

Applications

• SONET/SDH optical networking systems
• OTN (Optical Transport Network) infrastructure
• GbE (Gigabit Ethernet) interfaces
• Fibre Channel connections

Procurement Notes

Verify the specific suffix code CJGLPFB against official Epson documentation to confirm exact pinout, frequency programming defaults, and package variant. Ensure the design accommodates the required 2.5V or 3.3V power rails and LVPECL load conditions. Confirm that the I²C interface logic levels are compatible with the host controller. Check lifecycle status as some variants may be obsolete.

Selection Notes

Select this component when precise frequency agility and low phase noise are critical for serial data transmission standards. The integrated VCXO functionality eliminates the need for external tuning circuits. Consider the thermal environment, as the device is rated for industrial temperatures up to 85°C. The compact ceramic package suits space-constrained PCB layouts.

Part Context

This part belongs to the VG7050ECN series of programmable oscillators from Epson Timing. The series is designed for high-performance timing applications requiring flexible frequency selection without sacrificing signal integrity. The SM20T007 suffix indicates a specific factory-programmed configuration within this family.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult Epson's official cross-reference guides for potential alternatives if this specific suffix is unavailable.