8N4QV01BG-0001CD8

Programmable Timers And Oscillators Overview

The Renesas 8N4QV01BG-0001CD8 is a programmable clock generator and oscillator within the FemtoClock NG series. It operates as a Voltage-Controlled Crystal Oscillator (VCXO) with quadrature differential outputs, designed for high-performance timing applications. The device supports multiple output frequencies including 125 MHz, 100 MHz, 122.88 MHz, and 156.25 MHz. It functions on a supply voltage range of 2.375 V to 2.625 V with a typical supply current of 155 mA. The component is housed in a 10-CLCC package measuring 7x5 mm and is rated for an operating temperature range of -40°C to +85°C.

Programmable Timers And Oscillators Feature Summary

• FemtoClock NG series programmable VCXO with quadrature differential outputs
• Supports standard frequencies: 125 MHz, 100 MHz, 122.88 MHz, and 156.25 MHz
• Low noise performance suitable for high-speed serial link applications
• Operates on 2.375 V to 2.625 V supply with 155 mA current consumption

Programmable Timers And Oscillators Applications

• High-speed serial communication interfaces requiring precise jitter attenuation
• Data center infrastructure and server backplane clocking
• Telecommunications equipment synchronization
• Test and measurement instrumentation timing sources

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix 'CD8' against official Renesas documentation, as standard listings often reference 'CDI8'. Confirm RoHS compliance status, as some variants in this family are marked non-compliant. Check for End-of-Life (EOL) notices or Product Change Notifications (PCNs) prior to procurement, as availability may be limited.

Programmable Timers And Oscillators Selection Notes

Select this component when a low-jitter, voltage-controlled clock source with quadrature outputs is required for 10G/40G Ethernet or Fibre Channel links. Ensure the design accommodates the 2.375 V–2.625 V supply rail and the thermal requirements of the 10-CLCC package. Verify that the external VCO tuning voltage range matches the application's loop filter design.

Programmable Timers And Oscillators Part Context

This part belongs to the Renesas FemtoClock NG family, which integrates a PLL, VCO, and output drivers into a single low-noise solution. The 8N4QV01 variant specifically provides quadrature outputs, useful for I/Q modulation or differential signaling schemes. It serves as a drop-in replacement for older IDT femtoclock devices following the Renesas acquisition.

Programmable Timers And Oscillators Replacement Considerations

Check for direct pin-compatible substitutes within the 8N4QV01 family with different frequency options. Verify if the 8N4Q001LG series offers similar functionality if quadrature outputs are not strictly required. Consult Renesas PCNs for any pinout or electrical parameter changes in newer revisions.