8N4Q001KG-2201CDI8

Programmable Timers And Oscillators Overview

The Renesas 8N4Q001KG-2201CDI8 is a programmable quad-frequency 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 supports output frequencies ranging from 15.476MHz to 866.67MHz and 975MHz to 1,300MHz, with a programming resolution of 435.9Hz divided by N. It features an I2C interface for frequency, absolute pull-range (APR), and PLL control register programming. The component operates on a 2.5V or 3.3V supply within an ambient temperature range of -40°C to +85°C and is housed in a 10-lead CLCC package.

Programmable Timers And Oscillators Feature Summary

• Fourth-generation FemtoClock NG technology for optimized high frequency and low phase noise performance
• Quad-frequency capability with four power-up default frequencies set by FSEL0/FSEL1 pins
• Flexible APR programming from ±4.5ppm to ±754.5ppm via I2C interface
• Low RMS phase jitter: typical 0.494ps at 156.25MHz (12kHz–20MHz offset)

Programmable Timers And Oscillators Applications

• Wireless infrastructure equipment
• Telecommunication systems
• Networking end equipment

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix '2201' against official Renesas documentation to confirm the exact power-up default frequencies and APR settings, as these parameters are defined by the order code. Ensure compatibility with the required LVDS or LVCMOS output configuration and supply voltage mode (2.5V vs 3.3V) before procurement.

Programmable Timers And Oscillators Selection Notes

Select this component when precise frequency agility and low jitter are required for VCXO applications. Confirm that the target system requires the specific frequency ranges supported by the 8N4Q001 family. Verify that the PCB layout accommodates the 10-CLCC (5mm x 7mm) ceramic package and that the design supports I2C communication for dynamic reprogramming.

Programmable Timers And Oscillators Part Context

This part belongs to the Renesas FemtoClock NG family, which integrates advanced PLL synthesizers into compact packages. The 8N4Q001 variant specifically addresses the need for multiple programmable frequencies in a single device, reducing board space compared to using discrete oscillators for different frequency requirements.

Programmable Timers And Oscillators Replacement Considerations

Direct replacements must match the 10-CLCC package and FemtoClock NG architecture. Cross-reference with other 8N4Q001 variants (e.g., 8N4Q001KG-xxxxCDI8) if different default frequencies are acceptable. Note that older IDT-branded equivalents may require verification of pinout and register compatibility.