概览

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 (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

文档

文档标题 类型 日期
RC22504A Datasheet
PDF2.47 MB
数据手册
AN-827 Application Relevance of Clock Jitter
PDF1.99 MB
应用文档
Frequency Margining with FemtoClock 2
PDF129 KB
应用文档
How to Make 1.2V LVCMOS from 1.8V LVCMOS Output
PDF256 KB
应用文档
FemtoClock2 Python Driver Setup
PDF433 KB
应用文档
RC22504A and RC32504A: Using FemtoClock 2 for High Bandwidth Jitter Attenuation
PDF353 KB
应用文档
AN-831 The Crystal Load curve
PDF395 KB
应用文档
AN-844 Termination - AC Coupling Clock Receivers
PDF170 KB
应用文档
AN-842 Thermal Considerations in Package Design and Selection
PDF495 KB
应用文档
AN-840 Jitter Specifications for Timing Signals
PDF442 KB
应用文档
AN-838 Peak-to-Peak Jitter Calculations
PDF115 KB
应用文档
AN-839 RMS Phase Jitter
PDF233 KB
应用文档
AN-832 Timing Budget and Accuracy
PDF131 KB
应用文档
AN-833 Differential Input Self Oscillation Prevention
PDF180 KB
应用文档
AN-835 Differential Input with VCMR being VIH Referenced
PDF160 KB
应用文档
AN-836 Differential Input to Accept Single-ended Levels
PDF120 KB
应用文档
AN-830 Quartz Crystal Drive Level
PDF143 KB
应用文档
AN-815 Understanding Jitter Units
PDF565 KB
应用文档
AN-802 Crystal-Measuring Oscillator Negative Resistance
PDF136 KB
应用文档
AN-801 Crystal-High Drive Level
PDF202 KB
应用文档
AN-805 Recommended Ferrite Beads
PDF121 KB
应用文档
AN-806 Power Supply Noise Rejection
PDF438 KB
应用文档
AN-803 Crystal Timing Budget and Accuracy for Renesas Timing Clock Products
PDF108 KB
应用文档
FemtoClock2 Debug Guide
PDF80 KB
指南
Renesas IC Toolbox Software Manual
PDF1.53 MB
手册 - 软件
FemtoClock®2 GUI User Guide
PDF1.22 MB
手册 - 软件
RC22504A Schematic Checklist
XLSX482 KB
其他
Timing Solutions Products Overview
PDF906 KB
概览

设计和开发

软件与工具

瑞萨电子集成电路工具箱 (RICBox)借助瑞萨集成电路工具箱 (RICBox) 软件平台，客户可在连接到运行该软件的计算机时，将瑞萨设备配置到评估套件上。 Software Package 瑞萨电子

开发板与套件

RC32504A_RC22504A - Evaluation Board

RC32504A-EVK

评估
立即订购

FemtoClock™ 2 Evaluation Kit

This is the evaluation kit for the RC32504A and RC22504A point-of-use jitter attenuator and clock generators.  The board comes populated with an RC32504A device. The...

特色文件:
RC32504A/RC22504A Evaluation Board User Manual

ECAD 模块

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

扩展 ECAD 模块

模块

Title Type Date
RC22504A IBIS Model
ZIP28 KB
模型 - IBIS

产品选择

此为出厂可配置设备。试用自定义部件配置工具。
    Processing table
    器件号
    Pkg. Type
    Lead Count (#)
    Temp. Range
    Temp. Grade
    Pb (Lead) Free
    Carrier Type
    购买 / 样片
    RC22504A000GNK#BB0
    play_circleActive
    memory
    view_in_ar
    可提供样品
    		 VFQFPN 24 -40 to 85°C I Yes Tray 获取样片,
    RC22504A000GNK#KB0
    play_circleActive
    memory
    view_in_ar
    		VFQFPN 24 -40 to 85°C I Yes Reel
    Parametric Table tips

    Tips for Using This Parametric Table:

    • Hide Filters button in header: Collapse or expands filters
    • Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
    • Reset button in header: Reset all filters to the page default
    • Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
    • Export button in header: Export the filtered results of the table to an Excel document
    • Filter parts search bar in header: Type to filter table results by part number
    • Hide column button in column headers: Select to hide columns in table
    • AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
    • Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
    • Document icon next to product name in row: View the featured document for this product
    • Chip icon next to the right of the document icon in row: View the block diagram for this product
    • Cart icon to the right of the chip icon: Indicates that samples are available for this product

    支持

    联系技术支持自定义部件获取样片Clocks & Timing FAQsClocks & Timing Forum时钟树设计服务联系销售

    视频和培训

    Lab on the Cloud Demo for Femtoclock®2 Ultra-Low Phase Noise Synthesizer and Jitter Attenuator

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

    Video List

    新闻和博客

    Selecting the Best Device for Converter Clocking Applications 博客 2022年2月1日
    Benefits of a Point-of-Use Clock for Jitter Optimization 博客 2021年4月27日
    Faster Timing Design and Accurate Performance Testing with Jitter Measurement Utility 博客 2019年6月14日
    IDT's Latest Timing Products Deliver Industry-leading Phase Noise for 100G and 400G Applications 新闻
    New IDT 12-Output Clock Generator Delivers Best-In-Class Jitter Performance for Today’s Demanding Applications 新闻