8N4QV01LG-1127CDI

Programmable Timers And Oscillators Overview

The Renesas 8N4QV01LG-1127CDI is a quad-frequency programmable voltage-controlled crystal oscillator (VCXO) utilizing FemtoClock NG technology. It operates on a single supply of 2.5V or 3.3V and is housed in a lead-free, RoHS-compliant 10-lead ceramic CLCC package measuring 5mm x 7mm x 1.55mm. The device supports output frequencies ranging from 15.476MHz to 866.67MHz, with an extended range up to 1.3GHz. Programming is achieved via an I2C interface or hardware pins, allowing precise frequency steps as small as 435.9Hz divided by the PLL output divider.

Programmable Timers And Oscillators Feature Summary

• Quad-frequency capability with four default power-up frequencies selectable via FSEL0 and FSEL1 pins.
• High-precision programmability using I2C interface for frequencies between 15.476MHz and 866.67MHz.
• FemtoClock NG technology ensures low phase noise performance at high clock frequencies.
• Supports independent programming of PLL, P, M, and N divider registers for flexible configuration.

Programmable Timers And Oscillators Applications

• Wireless infrastructure equipment requiring precise clock generation.
• Telecommunication systems demanding low jitter and high stability.
• Networking end equipment needing multiple programmable clock frequencies.

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix '1127' against official Renesas documentation to confirm the exact factory preset frequencies and pull-range specifications. Ensure the ordering part number matches the required package type and temperature rating. Confirm RoHS compliance status directly with the manufacturer or authorized distributors, as legacy variants may differ.

Programmable Timers And Oscillators Selection Notes

Select this component when a single device must provide four distinct clock frequencies without external switching logic. Verify that the required frequency step size meets the application's precision needs, specifically checking if the 435.9Hz/N resolution is sufficient. Ensure the system design accommodates the 5mm x 7mm ceramic footprint and the 2.5V/3.3V power supply constraints.

Programmable Timers And Oscillators Part Context

This model belongs to the 8N4QV01 series within the FemtoClock NG family. It shares core architecture with other variants like the 8N4QV01LG-0127CDI but differs in factory-programmed frequency presets defined by the alphanumeric suffix. The series is designed for high-performance clocking in dense electronic assemblies.

Programmable Timers And Oscillators Replacement Considerations

Direct replacements are limited to other 8N4QV01 variants with compatible pinouts and electrical characteristics. Verify that alternative suffixes match the required default frequencies or can be reprogrammed to do so. Cross-model substitution requires careful validation of the I2C register maps and pull-range capabilities.