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Clock Generators, Frequency Synthesizers, PLL, & Differential Clocks

Renesas clock generators and frequency synthesizers are PLL-based solutions that generate precise clock signals for diverse applications. They produce multiple output frequencies from a common input, meeting strict tolerances with low-jitter performance. Using a simple quartz crystal or another clock as a reference, these devices support frequency translation (multiplication or division) and provide single-ended or differential outputs, such as LVPECL, LVDS, and HCSL. Some models include external feedback paths for enhanced precision—ideal for synchronizing complex systems.

Versatile Frequency Generation

Versatile Frequency Generation

Generates multiple output frequencies with ultra-low jitter and tight tolerances, ensuring reliable performance across diverse applications

Flexible Output Options

Flexible Output Options

Support for single-ended and differential outputs like LVPECL, LVDS, and HCSL, delivering adaptability for varied system architectures

Enhanced Precision

Enhanced Precision

External feedback paths for fine-tuned clock signal control, ensuring accuracy in timing-critical and high-performance applications

Cost-Effective Design

Cost-Effective Design

Low-cost quartz crystals or alternate reference clocks to reduce system cost while maintaining exceptional performance and reliability

Compare All Products
Clocks - Ultra-Low Jitter (<300 fs RMS) (Archived)
Ultra-low jitter clocks with jitter less than 300 fs RMS
3.3V 2.5V 1.8V 1.2V <150 fs RM <300 fs RM <700 fs RM ClockMatrix MicroClock FemtoClock NG Network Synchronizer DPLL/DCO VersaClock 5 VersaClock 3S FemtoClock NG PhiClock VersaClock 6E VersaClock 7 RF Family FemtoClock 3 FemtoClock NG FemtoClock 2 FemtoClock NG FemtoClock NG

Choosing a Clock Generator

Key considerations when selecting a clock generator or frequency synthesizer:

  • Clock Jitter: Jitter requirements depend on the processor, FPGA, ASIC, or application (PCIe or 10G Ethernet, for example). Renesas products meet jitter needs for virtually any application.
  • Frequency Range: Some devices excel across wide frequency ranges, while others are optimized for specific bands. We offer solutions for both scenarios.
  • Signaling Type: Clock signals require defined voltage levels and rise and fall times. Our products support single-ended (LVCMOS) and differential (LVDS, LVPECL, HCSL) signaling.
  • Supply Voltage: Determined by system power rails, lower voltages reduce power dissipation. We offer innovative low-voltage options without compromising performance.
  • Integration: Fewer components simplify design, reduce costs, and improve reliability. Our highly integrated solutions are ideal for complex and mid-range systems.
Blog: Selecting the Best Device for Converter Clocking ApplicationsProduct Selector: Clock Generation

Get Started with Clock Configuration Tools

Icon showing cog-wheel within a square illustration, indicating configuration settings and access to controls.
IC Toolbox for Clock & Kit Setup

A graphical platform that streamlines evaluation kit and clock device setup. Supports OTP/EEPROM programming, profile creation, and reference designs—helping you bring complex timing systems online faster.
Icon showing cog-wheel within a square illustration, indicating configuration settings and access to controls.
Programmable Clocks Live Bench Measurement

Access real-time phase noise measurements anytime, anywhere. This cloud-based tool provides 24/7 visibility into performance for Renesas’ flagship clock families.

Resources

Overview
PCI Express Timing Solutions Overview
Overview
VersaClock Family Overview
Overview
MicroClock Programmable Clocks Family Overview

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