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RC22504A

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Product Longevity: 2040

FemtoClock™ 2 Clock Generator

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Overview

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.

RC22504A - Block Diagram
RC22504A - Pin Assignment
RC22504A - Block Diagram
RC22504A - Pin Assignment
  • 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 (DC-coupled), 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

Documentation

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

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Diagram of ECAD Models

Models
Type Title Date
Model - IBIS
RC22504A IBIS Model
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1 item
This device is factory-configurable. Try the Custom Part Configuration Utility.

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Resources

Support Communities

  1. Programming the RC22504A via MCU

    I am using an MCU to  program the RC22504A  via I2C interface.  Is there any programming procedure, or sample code.

    Jul 18, 2022
  2. Programming the RC22504A itself via OTP.

    I would like to configure the RC22504A itself via OTP.  Can you provide OTP programming procedures and support as you mention in the datasheet? [locked by: Sai (SWF) at 11:49 (GMT 0) on 13 Jun 2022]

    Apr 27, 2022
  3. rc22504a在linux kernel中的驱动程序

    请问贵司的rc22504a，是否有在linux kernel中使用的驱动程序？ 如果有，该驱动可以在哪里获取到？

    Nov 23, 2024
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Videos & Training

Demonstration of Renesas’ Lab on the Cloud virtual environment for FemtoClock®2 ultra-low phase noise synthesizer and jitter attenuator.

News & Blog Posts

Blog Post
Feb 1, 2022
Selecting the Best Device for Converter Clocking Applications
Blog Post
Apr 27, 2021
Benefits of a Point-of-Use Clock for Jitter Optimization
Blog Post
Jun 15, 2019
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News
Dec 14, 2017
IDT's Latest Timing Products Deliver Industry-leading Phase Noise for 100G and 400G Applications
News
Jul 18, 2016
New IDT 12-Output Clock Generator Delivers Best-In-Class Jitter Performance for Today’s Demanding Applications