8N4QV01LG-0144CDI8

Programmable Timers And Oscillators Overview

The Renesas 8N4QV01LG-0144CDI8 is a quad-frequency programmable voltage-controlled crystal oscillator (VCXO) belonging to the FemtoClock NG series. It utilizes fourth-generation technology to deliver high clock frequencies with low phase noise. The device operates on a single 2.5V or 3.3V supply and features an I2C interface for precise frequency programming, ranging from 15.476MHz to 866.67MHz and 975MHz to 1,300MHz. It includes four power-up default frequencies selectable via hardware pins and supports absolute pull-range (APR) adjustment. The component is housed in a compact 10-lead ceramic CLCC package.

Programmable Timers And Oscillators Feature Summary

• Quad-frequency programmability with I2C control for output clock frequency, APR, and internal PLL registers
• Low RMS phase jitter performance, typically 0.494ps at 156.25MHz (12kHz - 20MHz offset)
• Flexible frequency resolution of 435.9Hz ÷N across specified ranges
• Single supply operation compatible with 2.5V or 3.3V logic levels

Programmable Timers And Oscillators Applications

• Wireless infrastructure equipment
• Telecommunication base stations
• High-speed networking devices

Programmable Timers And Oscillators Part Context

This component is part of the IDT/Renesas 8N4QV01 family, which represents the fourth generation of FemtoClock NG technology. The 'LG' suffix indicates lead-free packaging compliant with RoHS standards, while 'CDI8' specifies the 10-CLCC ceramic package variant designed for surface-mount assembly in industrial and telecommunications environments.

Programmable Timers And Oscillators Replacement Considerations

Direct replacements within the same family include variants such as 8N4QV01LG-0055CDI8 or 8N4QV01LG-0110CDI8, which share identical pinouts and electrical characteristics but differ in their factory-programmed default frequencies. Verify that the specific default frequencies required by the design match the candidate replacement's configuration.