The RC22504A is a small, low-power timing component designed to be placed immediately adjacent to a PHY, switch, ASIC or FPGA that requires several reference clocks with jitter performance less than 100fs (max). The RC22504A can act as a frequency synthesizer to locally generate the reference clock or as a DCO for frequency margining or OTN clock applications.

Features

  • Jitter below 100fs RMS maximum (10Hz to 20MHz)
  • PLL core consists of fractional-feedback Analog PLL (APLL)
    • Operates from a 25MHz to 80MHz crystal or XO
    • APLL frequency independent of input / crystal frequency
    • Operates as a frequency synthesizer or Digitally Controlled Oscillator (DCO)
    • DCO has tuning granularity of < 1ppb 
  • Programmable status output
  • 4 differential / 8 LVCMOS outputs
    • Any frequency from 10MHz to 1GHz (180MHz for LVCMOS)
    • Programmable output buffer supports HCSL (DCcoupled), LVDS/LVPECL/CML (AC-coupled) or two LVCMOS
    • Differential output swing is selectable: 400mV to 800mV
    • Output clock phase individually adjustable in 100ps steps
    • Output Enable input with programmable effect
  • Supports up to 1MHz I2C or up to 20MHz SPI serial processor port
  • Can configure itself automatically after reset via internal customer-definable One-Time Programmable (OTP) memory with up to four different configurations
  • 4 × 4 mm 24-VFQFPN package

Product Options

Part Number Part Status Pkg. Type Lead Count (#) Temp. Range Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Active VFQFPN 24 -40 to 85°C I Yes Tray
Availability
Active VFQFPN 24 -40 to 85°C I Yes Reel
Availability

Documentation

Title language Type Format File Size Date
Datasheets & Errata
RC22504A Datasheet Datasheet PDF 1.46 MB
User Guides & Manuals
FemtoClock2 Debug Guide Guide PDF 80 KB
FemtoClock®2 GUI User Guide Manual - Software PDF 1.22 MB
Application Notes & White Papers
FemtoClock2 Python Driver Setup Application Note PDF 433 KB
RC22504A and RC32504A: Using FemtoClock 2 for High Bandwidth Jitter Attenuation Application Note PDF 353 KB
AN-831 The Crystal Load curve Application Note PDF 395 KB
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 170 KB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 495 KB
AN-840 Jitter Specifications for Timing Signals Application Note PDF 442 KB
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 115 KB
AN-839 RMS Phase Jitter Application Note PDF 233 KB
AN-832 Timing Budget and Accuracy Application Note PDF 131 KB
AN-833 Differential Input Self Oscillation Prevention Application Note PDF 180 KB
AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 160 KB
AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 120 KB
AN-830 Quartz Crystal Drive Level Application Note PDF 143 KB
AN-815 Understanding Jitter Units Application Note PDF 565 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.15 MB
AN-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 136 KB
AN-801 Crystal-High Drive Level Application Note PDF 202 KB
AN-805 Recommended Ferrite Beads Application Note PDF 121 KB
AN-806 Power Supply Noise Rejection Application Note PDF 438 KB
AN-803 Crystal Timing Budget and Accuracy for Renesas Timing Clock Products Application Note PDF 108 KB
Other
RC22504A Schematic Checklist Other XLSX 482 KB
Timing Solutions Products Overview Overview PDF 906 KB
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB

Downloads

Title language Type Format File Size Date
Software
FemtoClock2 Renesas IC Toolbox GUI Installer v2.0.0 Software ZIP 5.47 MB
Renesas IC Toolbox Installer v3.3.0 Software ZIP 191.06 MB

Boards & Kits

Part Number Title Type Company
RC32504A-EVK FemtoClock®2 Evaluation Kit Evaluation Renesas